{"id":6241,"date":"2020-07-22T06:31:56","date_gmt":"2020-07-22T06:31:56","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=6241"},"modified":"2025-07-01T06:30:37","modified_gmt":"2025-07-01T06:30:37","slug":"tratamento-termico-de-titanio-e-ligas-de-titanio","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/pt\/blog\/tratamento-termico-de-titanio-e-ligas-de-titanio\/","title":{"rendered":"Tratamento t\u00e9rmico de tit\u00e2nio e ligas de tit\u00e2nio"},"content":{"rendered":"<h2 class=\"wp-block-heading\"><strong>Objetivo do tratamento t\u00e9rmico de tit\u00e2nio e ligas de tit\u00e2nio<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Reduzir o estresse residual do tratamento t\u00e9rmico de tit\u00e2nio gerado durante o processo de fabrica\u00e7\u00e3o (aliviar o estresse)<\/li>\n\n\n\n<li>Produz a melhor combina\u00e7\u00e3o de ductilidade, trabalhabilidade e estabilidade dimensional e estrutural (recozimento)<\/li>\n\n\n\n<li>Aumentar a for\u00e7a (solu\u00e7\u00e3o de tratamento e envelhecimento)<\/li>\n\n\n\n<li>Otimize propriedades especiais, como tenacidade \u00e0 fratura, resist\u00eancia \u00e0 fadiga e resist\u00eancia \u00e0 flu\u00eancia em alta temperatura<\/li>\n<\/ul>\n\n\n\n<p>A fim de obter propriedades mec\u00e2nicas selecionadas, v\u00e1rios tipos de tratamentos de recozimento (por exemplo, recozimento simples, recozimento duplo e recozimento de recristaliza\u00e7\u00e3o), bem como tratamento de solu\u00e7\u00e3o e tratamento de envelhecimento devem ser realizados. <\/p>\n\n\n\n<p>O al\u00edvio de tens\u00f5es e o recozimento podem ser usados para evitar o ataque qu\u00edmico preferencial em determinados <a href=\"https:\/\/www.kaysuns.com\/pt\/quais-sao-os-ambientes-corrosivos-para-tubulacoes\/\" target=\"_blank\">ambientes corrosivos<\/a>O tratamento de estabiliza\u00e7\u00e3o \u00e9 um processo que evita a deforma\u00e7\u00e3o (tratamento de estabiliza\u00e7\u00e3o) e ajusta o metal para as opera\u00e7\u00f5es subsequentes de forma\u00e7\u00e3o e fabrica\u00e7\u00e3o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Resposta ao tratamento t\u00e9rmico e tipos de liga<\/strong><\/h3>\n\n\n\n<p>A resposta do tit\u00e2nio e das ligas de tit\u00e2nio ao tratamento t\u00e9rmico depende da composi\u00e7\u00e3o do metal e da influ\u00eancia dos elementos de liga na transforma\u00e7\u00e3o do cristal \u03b1-\u03b2 do tit\u00e2nio.<\/p>\n\n\n\n<p>Lembre-se de que nem todos os ciclos de tratamento t\u00e9rmico s\u00e3o aplic\u00e1veis a todas as ligas de tit\u00e2nio, porque os objetivos do projeto de v\u00e1rias ligas s\u00e3o diferentes.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>As ligas Ti-5Al-2Sn-2Zr-4Mo-4Cr e Ti-6Al-2Sn-4Zr-6Mo s\u00e3o projetadas para resist\u00eancia em se\u00e7\u00f5es pesadas.<\/li>\n\n\n\n<li>Ligas Ti- 6Al-2Sn-4Zr-2Mo e Ti-6Al-5Zr-0,5Mo-0,2Si para resist\u00eancia \u00e0 flu\u00eancia.<\/li>\n\n\n\n<li>Ligas Ti-6Al-2Nb-1 Ta-1Mo e Ti-6Al-4V, para resist\u00eancia \u00e0 corros\u00e3o sob tens\u00e3o em solu\u00e7\u00f5es aquosas de sal e para alta tenacidade \u00e0 fratura.<\/li>\n\n\n\n<li>Ligas Ti-5Al-2.5Sn e Ti-2.5Cu para soldabilidade; e<\/li>\n\n\n\n<li>Ti-6Al-6V-2Sn, Ti-6Al-4V e Ti-10V-2Fe-3Al para alta resist\u00eancia em temperaturas baixas a moderadas.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A influ\u00eancia dos elementos de liga na transforma\u00e7\u00e3o \u03b1-\u03b2.<\/strong><\/h3>\n\n\n\n<p>O tit\u00e2nio sem liga \u00e9 al\u00f3tropo. Sua estrutura hexagonal compactada (fase \u03b1) torna-se uma estrutura c\u00fabica centrada no corpo (fase \u03b2) a 885 \u00b0 C (1625 \u00b0 F), e a estrutura permanece inalterada em temperaturas at\u00e9 o ponto de fus\u00e3o.<\/p>\n\n\n\n<p>Em rela\u00e7\u00e3o \u00e0 sua influ\u00eancia na transforma\u00e7\u00e3o alotr\u00f3pica, os elementos de liga do tit\u00e2nio s\u00e3o classificados como estabilizadores alfa ou estabilizadores beta. Os estabilizadores alfa (como o oxig\u00eanio e o alum\u00ednio) aumentam a temperatura de transi\u00e7\u00e3o de \u03b1 para \u03b2. O nitrog\u00eanio e o carbono tamb\u00e9m s\u00e3o estabilizadores, mas esses elementos geralmente n\u00e3o s\u00e3o adicionados deliberadamente nas formula\u00e7\u00f5es de ligas. Os estabilizadores beta (como mangan\u00eas, cromo, ferro, <a href=\"https:\/\/www.kaysuns.com\/pt\/papel-do-molibdenio-em-tubos-e-conexoes-de-aco-inoxidavel\/\" target=\"_blank\">molibd\u00eanio<\/a>van\u00e1dio e ni\u00f3bio) podem reduzir a temperatura de transi\u00e7\u00e3o de \u03b1 para \u03b2 e, dependendo da quantidade adicionada, podem fazer com que algumas fases \u03b2 permane\u00e7am em temperatura ambiente.<\/p>\n\n\n\n<p>Tipo de liga. De acordo com o tipo e a quantidade de elementos de liga contidos na liga de tit\u00e2nio, a liga de tit\u00e2nio \u00e9 classificada como \u03b1, pr\u00f3xima a \u03b1, \u03b1-\u03b2 ou liga \u03b2. A resposta desses tipos de ligas ao tratamento t\u00e9rmico \u00e9 brevemente descrita a seguir.<\/p>\n\n\n\n<p>As ligas de tit\u00e2nio alfa e quase alfa podem aliviar o estresse e serem recozidas, mas qualquer tipo de tratamento t\u00e9rmico (como o tratamento beta em solu\u00e7\u00e3o e o tratamento de envelhecimento ap\u00f3s t\u00eampera) n\u00e3o pode produzir alta resist\u00eancia nessas ligas.<\/p>\n\n\n\n<p>As ligas beta comercialmente dispon\u00edveis s\u00e3o, na verdade, ligas beta metaest\u00e1veis. Quando essas ligas s\u00e3o expostas a altas temperaturas selecionadas, a fase \u03b2 restante se decomp\u00f5e e se fortalece. Para ligas \u03b2, o al\u00edvio de tens\u00e3o e o tratamento de envelhecimento podem ser usados em combina\u00e7\u00e3o, e o recozimento e o tratamento em solu\u00e7\u00e3o podem ser a mesma opera\u00e7\u00e3o.<\/p>\n\n\n\n<p>A liga \u03b1-\u03b2 \u00e9 uma liga de duas fases, como o nome sugere, cont\u00e9m as fases \u03b1 e \u03b2 \u00e0 temperatura ambiente. Eles s\u00e3o os mais comuns e mais vers\u00e1teis dos tr\u00eas tipos de ligas de tit\u00e2nio.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"364\" height=\"496\" src=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/07\/Effect-of-heat-treatment-of-titanium-alloy-surface-on-high-temperature-oxidation-resistance-.png\" alt=\"Efeito do tratamento t\u00e9rmico da superf\u00edcie da liga de tit\u00e2nio na resist\u00eancia \u00e0 oxida\u00e7\u00e3o em alta temperatura \" class=\"wp-image-6242\" srcset=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/07\/Effect-of-heat-treatment-of-titanium-alloy-surface-on-high-temperature-oxidation-resistance-.png 364w, https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/07\/Effect-of-heat-treatment-of-titanium-alloy-surface-on-high-temperature-oxidation-resistance--220x300.png 220w\" sizes=\"(max-width: 364px) 100vw, 364px\" \/><\/figure>\n<\/div>\n\n\n<p><strong>Os n\u00edveis de oxig\u00eanio e ferro t\u00eam efeitos significativos nas propriedades mec\u00e2nicas ap\u00f3s o tratamento t\u00e9rmico. Deve-se perceber que:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>O oxig\u00eanio e o ferro devem estar pr\u00f3ximos dos m\u00e1ximos especificados para atender aos n\u00edveis de for\u00e7a em certos graus comercialmente puros<\/li>\n\n\n\n<li>O oxig\u00eanio deve estar pr\u00f3ximo de um m\u00e1ximo especificado para atender aos n\u00edveis de for\u00e7a em solu\u00e7\u00e3o tratada e envelhecida Ti-6Al-4 V<\/li>\n\n\n\n<li>Os n\u00edveis de oxig\u00eanio devem ser mantidos o mais baixo poss\u00edvel para otimizar a resist\u00eancia \u00e0 fratura. No entanto, o n\u00edvel de oxig\u00eanio deve ser alto o suficiente para atender aos requisitos de resist\u00eancia \u00e0 tra\u00e7\u00e3o<\/li>\n\n\n\n<li>O teor de ferro deve ser mantido o mais baixo poss\u00edvel para otimizar as propriedades de flu\u00eancia e ruptura por tens\u00e3o. A maioria das ligas resistentes \u00e0 flu\u00eancia requerem n\u00edveis de ferro iguais ou abaixo de 0,05wt%.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Tratamentos para al\u00edvio do estresse<\/strong><\/h3>\n\n\n\n<p>Tit\u00e2nio e ligas de tit\u00e2nio podem aliviar o estresse.<\/p>\n\n\n\n<p>O tratamento de al\u00edvio de estresse reduz o estresse residual indesej\u00e1vel:<br \/>Primeiro, a deforma\u00e7\u00e3o causada por forjamento a quente irregular ou conforma\u00e7\u00e3o a frio e endireitamento,<br \/>Segundo, processamento assim\u00e9trico de placas de a\u00e7o ou pe\u00e7as forjadas e, terceiro, soldagem e resfriamento de pe\u00e7as fundidas.<\/p>\n\n\n\n<p>O al\u00edvio dessa tens\u00e3o ajuda a manter a estabilidade da forma e elimina desvantagens, como a perda de resist\u00eancia \u00e0 compress\u00e3o comumente conhecida como efeito Bauschinger.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>O recozimento de tit\u00e2nio e ligas de tit\u00e2nio<\/strong><\/h3>\n\n\n\n<p>O recozimento \u00e9 usado principalmente para aumentar a tenacidade \u00e0 fratura, a ductilidade \u00e0 temperatura ambiente, a estabilidade dimensional e t\u00e9rmica e a resist\u00eancia \u00e0 flu\u00eancia.<\/p>\n\n\n\n<p>Muitas ligas de tit\u00e2nio s\u00e3o colocadas em uso no estado recozido. Como uma ou mais melhorias de desempenho s\u00e3o geralmente obtidas \u00e0s custas de algum outro desempenho, o ciclo de recozimento deve ser selecionado de acordo com a finalidade do tratamento.<\/p>\n\n\n\n<p>Os m\u00e9todos de tratamento de recozimento comuns s\u00e3o:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Recozimento de moinho<\/li>\n\n\n\n<li>Recozimento duplex<\/li>\n\n\n\n<li>Recozimento de recristaliza\u00e7\u00e3o<\/li>\n\n\n\n<li>Recozimento beta<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Solu\u00e7\u00e3o para tratamento e envelhecimento<\/strong><\/h3>\n\n\n\n<p>Por meio de solu\u00e7\u00e3o e tratamento de envelhecimento, v\u00e1rios n\u00edveis de resist\u00eancia podem ser obtidos em ligas \u03b1-\u03b2 ou \u03b2. Al\u00e9m da liga Ti-2.5Cu \u00fanica, a resposta ao tratamento t\u00e9rmico da liga de tit\u00e2nio se origina da instabilidade da fase \u03b2 de alta temperatura em baixa temperatura.<\/p>\n\n\n\n<p>O aquecimento da liga \u03b1-\u03b2 at\u00e9 a temperatura de tratamento da solu\u00e7\u00e3o produzir\u00e1 uma raz\u00e3o de fase \u03b2 mais alta. A distribui\u00e7\u00e3o de fases \u00e9 mantida por t\u00eampera; no processo de envelhecimento subsequente, a fase \u03b2 inst\u00e1vel se decompor\u00e1 para fornecer alta resist\u00eancia. As ligas beta comercialmente dispon\u00edveis s\u00e3o normalmente fornecidas em condi\u00e7\u00f5es de tratamento em solu\u00e7\u00e3o e requerem apenas um tratamento de envelhecimento.<\/p>\n\n\n\n<p>Ap\u00f3s a limpeza, os componentes de tit\u00e2nio devem ser instalados em um acess\u00f3rio ou rack para permitir acesso livre ao meio de aquecimento e t\u00eampera. Os componentes grossos e finos da mesma liga podem ser tratados em solu\u00e7\u00e3o juntos, mas o tempo na temperatura depende da parte mais espessa. <\/p>\n\n\n\n<p>A Tabela 1 mostra as combina\u00e7\u00f5es de tempo \/ temperatura usadas para o tratamento da solu\u00e7\u00e3o. <\/p>\n\n\n\n<table width=\"80%\" class=\"table table-hover\" border=\"1\" align=\"center\" cellpadding=\"1\" cellspacing=\"1\">\n<tbody><tr>\n\t<td align=\"left\" bgcolor=\"#00a0e9\">\n\t<strong>Ligas<\/strong>\n\t<\/td>\n\t<td align=\"left\" bgcolor=\"#00a0e9\">\n\t<strong>Temperatura da solu\u00e7\u00e3o<br \/>[\u00b0 C]<\/strong>\n\t<\/td>\n\t<td align=\"left\" bgcolor=\"#00a0e9\">\n\t<strong>Hora da solu\u00e7\u00e3o<br \/>[h]<\/strong>\n\t<\/td>\n\t<td align=\"left\" bgcolor=\"#00a0e9\">\n\t<strong>Taxa de refrigera\u00e7\u00e3o<\/strong>\n\t<\/td>\n\t<td align=\"left\" bgcolor=\"#00a0e9\">\n\t<strong>Temperatura de envelhecimento<br \/>[\u00b0 C]<\/strong>\n\t<\/td>\n\t<td align=\"left\" bgcolor=\"#00a0e9\">\n\t<strong>Tempo de envelhecimento<br \/>[h]<\/strong>\n\t<\/td>\n<\/tr>\n<tr>\n\t<td colspan=\"6\" align=\"left\" bgcolor=\"#05B8E4\">\n\t<strong>ligas \u03b1 ou quase \u03b1<\/strong><\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">\n\tTi-8Al-1Mo-1V\n\t<\/td>\n\t<td align=\"left\">\n\t980-1010\n\t<\/td>\n\t<td align=\"left\">\n\t1\n\t<\/td>\n\t<td align=\"left\">\n\t\u00d3leo ou \u00e1gua\n\t<\/td>\n\t<td align=\"left\">\n\t565-595\n\t<\/td>\n\t<td align=\"left\">&nbsp;\n\t\n\t<\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">\n\tTi-2.5Cu (IMI 230)\n\t<\/td>\n\t<td align=\"left\">\n\t795-815\n\t<\/td>\n\t<td align=\"left\">\n\t0,5-1\n\t<\/td>\n\t<td align=\"left\">\n\tAr ou \u00e1gua\n\t<\/td>\n\t<td align=\"left\">\n\t390-410\n\t<\/td>\n\t<td align=\"left\">\n\t8-24 (etapa 1)\n\t<\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">&nbsp;\n\t\n\t<\/td>\n\t<td align=\"left\">&nbsp;\n\t\n\t<\/td>\n\t<td align=\"left\">&nbsp;\n\t\n\t<\/td>\n\t<td align=\"left\">&nbsp;\n\t\n\t<\/td>\n\t<td align=\"left\">\n\t465-485\n\t<\/td>\n\t<td align=\"left\">\n\t8 (etapa 2)\n\t<\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">\n\tTi-6Al-2Sn-4Zr-2Mo\n\t<\/td>\n\t<td align=\"left\">\n\t955-980\n\t<\/td>\n\t<td align=\"left\">\n\t1\n\t<\/td>\n\t<td align=\"left\">\n\tAr\n\t<\/td>\n\t<td align=\"left\">\n\t595\n\t<\/td>\n\t<td align=\"left\">\n\t8\n\t<\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">\n\tTi-6Al-5Zr-0,5Mo-0,2Si (IMI 685)\n\t<\/td>\n\t<td align=\"left\">\n\t1040-1060\n\t<\/td>\n\t<td align=\"left\">\n\t0,5-1\n\t<\/td>\n\t<td align=\"left\">\n\t\u00d3leo\n\t<\/td>\n\t<td align=\"left\">\n\t540-560\n\t<\/td>\n\t<td align=\"left\">\n\t24\n\t<\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">\n\tTi-5.5Al-3.5Sn-3Zr-1Nb-0.3Mo-0.3Si (IMI 829)\n\t<\/td>\n\t<td align=\"left\">\n\t1040-1060\n\t<\/td>\n\t<td align=\"left\">\n\t0,5-1\n\t<\/td>\n\t<td align=\"left\">\n\tAr ou \u00f3leo\n\t<\/td>\n\t<td align=\"left\">\n\t615-635\n\t<\/td>\n\t<td align=\"left\">\n\t2\n\t<\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">\n\tTi-5.8Al-4Sn-3.5Zr-0.7Nb-0.5Mo-0.3Si (IMI 834)\n\t<\/td>\n\t<td align=\"left\">\n\t1020\n\t<\/td>\n\t<td align=\"left\">\n\t2\n\t<\/td>\n\t<td align=\"left\">\n\t\u00d3leo\n\t<\/td>\n\t<td align=\"left\">\n\t625\n\t<\/td>\n\t<td align=\"left\">\n\t2\n\t<\/td>\n<\/tr>\n<tr>\n\t<td colspan=\"6\" align=\"left\" bgcolor=\"#05B8E4\">\n\t<strong>ligas \u03b1-\u03b2<\/strong><\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">\n\tTi-6Al-4V\n\t<\/td>\n\t<td align=\"left\">\n\t955-970\n\t<\/td>\n\t<td align=\"left\">\n\t1\n\t<\/td>\n\t<td align=\"left\">\n\t\u00c1gua\n\t<\/td>\n\t<td align=\"left\">\n\t480-595\n\t<\/td>\n\t<td align=\"left\">\n\t4-8\n\t<\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">&nbsp;\n\t\n\t<\/td>\n\t<td align=\"left\">\n\t955-970\n\t<\/td>\n\t<td align=\"left\">\n\t1\n\t<\/td>\n\t<td align=\"left\">\n\t\u00c1gua\n\t<\/td>\n\t<td align=\"left\">\n\t705-760\n\t<\/td>\n\t<td align=\"left\">\n\t2-4\n\t<\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">\n\tTi-6al-6V-2Sn (Cu + Fe)\n\t<\/td>\n\t<td align=\"left\">\n\t885-910\n\t<\/td>\n\t<td align=\"left\">\n\t1\n\t<\/td>\n\t<td align=\"left\">\n\t\u00c1gua\n\t<\/td>\n\t<td align=\"left\">\n\t480-595\n\t<\/td>\n\t<td align=\"left\">\n\t4-8\n\t<\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">\n\tTi-6Al-2Sn-4Zr-6Mo\n\t<\/td>\n\t<td align=\"left\">\n\t845-890\n\t<\/td>\n\t<td align=\"left\">\n\t1\n\t<\/td>\n\t<td align=\"left\">\n\tAr\n\t<\/td>\n\t<td align=\"left\">\n\t580-605\n\t<\/td>\n\t<td align=\"left\">\n\t4-8\n\t<\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">\n\tTi-4Al-4Mo-2Sn-0,5Si (IMI 550)\n\t<\/td>\n\t<td align=\"left\">\n\t890-910\n\t<\/td>\n\t<td align=\"left\">\n\t0.5-1\n\t<\/td>\n\t<td align=\"left\">\n\tAr\n\t<\/td>\n\t<td align=\"left\">\n\t490-510\n\t<\/td>\n\t<td align=\"left\">\n\t24\n\t<\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">\n\tTi-4Al-4Mo-4Sn-0,5Si (IMI 551)\n\t<\/td>\n\t<td align=\"left\">\n\t890-910\n\t<\/td>\n\t<td align=\"left\">\n\t0.5-1\n\t<\/td>\n\t<td align=\"left\">\n\tAr\n\t<\/td>\n\t<td align=\"left\">\n\t490-510\n\t<\/td>\n\t<td align=\"left\">\n\t24\n\t<\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">\n\tTi-5Al-2Sn-2Zr-4Mo-4Cr\n\t<\/td>\n\t<td align=\"left\">\n\t845-870\n\t<\/td>\n\t<td align=\"left\">\n\t1\n\t<\/td>\n\t<td align=\"left\">\n\tAr\n\t<\/td>\n\t<td align=\"left\">\n\t580-605\n\t<\/td>\n\t<td align=\"left\">\n\t4-8\n\t<\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">\n\tTi-6Al-2Sn-2Zr-2Mo-2Cr-0.25Si\n\t<\/td>\n\t<td align=\"left\">\n\t870-925\n\t<\/td>\n\t<td align=\"left\">\n\t1\n\t<\/td>\n\t<td align=\"left\">\n\t\u00c1gua\n\t<\/td>\n\t<td align=\"left\">\n\t480-595\n\t<\/td>\n\t<td align=\"left\">\n\t4-8\n\t<\/td>\n<\/tr>\n<tr>\n\t<td colspan=\"6\" align=\"left\" bgcolor=\"#05B8E4\">\n\t<strong>ligas \u03b2 ou quase \u03b2<\/strong><\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">\n\tTi-13V-11Cr-3Al\n\t<\/td>\n\t<td align=\"left\">\n\t775-800\n\t<\/td>\n\t<td align=\"left\">\n\t1\/4-1\n\t<\/td>\n\t<td align=\"left\">\n\tAr ou \u00e1gua\n\t<\/td>\n\t<td align=\"left\">\n\t425-480\n\t<\/td>\n\t<td align=\"left\">\n\t4-100\n\t<\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">\n\tTi-11.5Mo-6Zr-4.5Sn (Beta III)\n\t<\/td>\n\t<td align=\"left\">\n\t690-790\n\t<\/td>\n\t<td align=\"left\">\n\t1\/8-1\n\t<\/td>\n\t<td align=\"left\">\n\tAr ou \u00e1gua\n\t<\/td>\n\t<td align=\"left\">\n\t480-595\n\t<\/td>\n\t<td align=\"left\">\n\t8-32\n\t<\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">\n\tTi-3Al-8V-6Cr-4Mo-4Zr (Beta C)\n\t<\/td>\n\t<td align=\"left\">\n\t815-925\n\t<\/td>\n\t<td align=\"left\">\n\t1\n\t<\/td>\n\t<td align=\"left\">\n\t\u00c1gua\n\t<\/td>\n\t<td align=\"left\">\n\t455-540\n\t<\/td>\n\t<td align=\"left\">\n\t8-24\n\t<\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">\n\tTi-10V-2Fe-3Al\n\t<\/td>\n\t<td align=\"left\">\n\t760-780\n\t<\/td>\n\t<td align=\"left\">\n\t1\n\t<\/td>\n\t<td align=\"left\">\n\t\u00c1gua\n\t<\/td>\n\t<td align=\"left\">\n\t495-525\n\t<\/td>\n\t<td align=\"left\">\n\t8\n\t<\/td>\n<\/tr>\n<tr>\n\t<td align=\"left\">\n\tTi-15V-3Al-3Cr-3Sn\n\t<\/td>\n\t<td align=\"left\">\n\t790-815\n\t<\/td>\n\t<td align=\"left\">\n\t1\/4\n\t<\/td>\n\t<td align=\"left\">\n\tAr\n\t<\/td>\n\t<td align=\"left\">\n\t510-595\n\t<\/td>\n\t<td align=\"left\">\n\t8-24\n\t<\/td>\n<\/tr>\n<\/tbody><\/table>\n<p  align=\"center\">Solu\u00e7\u00e3o recomendada e tratamentos de envelhecimento para liga de tit\u00e2nio<\/p>\n\n\n\n<p>A carga pode ser carregada diretamente em um forno operando na temperatura de processamento da solu\u00e7\u00e3o. Embora o pr\u00e9-aquecimento n\u00e3o seja necess\u00e1rio, ele pode ser usado para minimizar a deforma\u00e7\u00e3o de pe\u00e7as complexas.<\/p>\n\n\n\n<p>As ligas beta s\u00e3o geralmente obtidas de fabricantes em condi\u00e7\u00f5es de solu\u00e7\u00e3o s\u00f3lida. Se o reaquecimento for necess\u00e1rio, o tempo de imers\u00e3o deve ser apenas o tempo necess\u00e1rio para obter a dissolu\u00e7\u00e3o completa. A temperatura de tratamento da solu\u00e7\u00e3o da liga \u03b2 \u00e9 superior \u00e0 temperatura de transforma\u00e7\u00e3o \u03b2; como n\u00e3o h\u00e1 um segundo est\u00e1gio, o crescimento do gr\u00e3o pode ocorrer rapidamente.<\/p>\n\n\n\n<p>liga \u03b1-\u03b2. A escolha da temperatura de tratamento da solu\u00e7\u00e3o da liga \u03b1-\u03b2 \u00e9 baseada na combina\u00e7\u00e3o das propriedades mec\u00e2nicas exigidas ap\u00f3s o envelhecimento. A mudan\u00e7a da temperatura de tratamento da solu\u00e7\u00e3o da liga \u03b1-\u03b2 ir\u00e1 alterar o conte\u00fado da fase \u03b2, alterando assim a resposta ao envelhecimento.<\/p>\n\n\n\n<p>Para obter alta resist\u00eancia com ductilidade suficiente, o tratamento da solu\u00e7\u00e3o deve ser realizado em uma temperatura mais alta no campo \u03b1-\u03b2, geralmente 25-85 \u00b0 C (50-150 \u00b0 F) abaixo da linha transit\u00f3ria \u03b2 da liga. Se for necess\u00e1ria maior tenacidade \u00e0 fratura ou resist\u00eancia \u00e0 corros\u00e3o sob tens\u00e3o, o recozimento beta ou o tratamento com solu\u00e7\u00e3o beta podem ser necess\u00e1rios. No entanto, o tratamento t\u00e9rmico de ligas \u03b1-\u03b2 na faixa \u03b2 resultar\u00e1 em uma diminui\u00e7\u00e3o significativa da ductilidade. Essas ligas s\u00e3o geralmente tratadas termicamente em solu\u00e7\u00e3o a uma temperatura abaixo da temperatura de transforma\u00e7\u00e3o \u03b2 para obter o melhor equil\u00edbrio de ductilidade, tenacidade \u00e0 fratura, flu\u00eancia e propriedades de fratura por estresse.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>Postado por <a href=\"https:\/\/www.kaysuns.com\/pt\/\" target=\"_blank\">fornecedor de acess\u00f3rios para tubos de a\u00e7o inoxid\u00e1vel<\/a> KAYSUNS<\/p>","protected":false},"featured_media":6243,"template":"","categories":[186],"tags":[],"class_list":["post-6241","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-stainless-steel-knowledge"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Heat Treatment Of Titanium And Titanium Alloys - KAYSUNS TUBINGS<\/title>\n<meta name=\"description\" content=\"The purposes of heat treatment of titanium alloys are reduce residual stress, fracture toughness, fatigue strength, high-temperature creep strength,etc.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kaysuns.com\/pt\/blog\/tratamento-termico-de-titanio-e-ligas-de-titanio\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Heat Treatment Of Titanium And Titanium Alloys - 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