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Shanghai Xin Li Institute of Power Equipment, Shanghai 201109, China）<br /> 机构地区：[1]上海交通大学上海市激光制造与材料改性重点实验室,上海200240 [2]上海新力动力设备研究所,上海201109<br /> 出 处：《中国有色金属学报》 EI CSCD 2015年第25卷第1期 1-8页,共8页<br /> The Chinese Journal of Nonferrous Metals<br /> 基 金：上海航天技术研究院-上海交大航天先进技术联合研究中心项目（USCAST2012-18）<br /> 摘 要：采用光纤激光进行TC11钛合金对接焊接，分析焊接接头的显微组织和力学性能。结果表明，TC11钛合金焊缝为α′马氏体组织，从母材至熔合线组织由α＋β逐渐向α′转变；随着热输入量的增加，焊缝柱状晶尺寸变大，马氏体分布更加密集交错，同时热影响区宽度增加，粗晶区晶粒尺寸变大；2 mm厚TC11钛合金在焊接速度2.0 m/min、激光功率2.8~3.2 kW的工艺参数下得到的焊缝成形良好；焊缝硬度高于母材硬度，并随热输入量的增加而增大；焊接接头抗拉强度达到母材的97%以上，塑性明显下降，低于母材的50%，焊缝断口形貌为低塑性沿晶断裂特征。<br /> The titanium alloy TC11 was welded by fiber laser beam, the microstructure and mechanical properties of the laser welded TC11 joints with different welding parameters were studied. The results show that the microstructure of weld metal consists ofα′ martensite.From the base metal to fusion line, the microstructure evolves fromα＋β phase toα′ phase. With increasing the heat input, the size of columnar dendrites increases, the distribution ofα′ martensite becomes more dispersive, the width of HAZ and grain size in coarse grain zone increase. Under the welding speed of 2.0 m/min and laser power of 2.8？3.2 kW, the sound welds of 2 mm thick TC11 alloy were obtained. The hardness of the weld increases with increasing the heat input. The tensile strength of welded joints reaches at least 97% of that of the base metal, while the plasticity decreases significantly. The fracture topography of welded joints shows brittle fracture character.<br /> 关键词：TC11钛合金 激光焊接 显微组织 力学性能<br /> TC11 titanium alloy ; laser beam welding ; microstructure ; mechanical property ;<br /> </div> <div style="height200px;"></div> </div> </div> </div> </div></div> </div> <!--autocomment filter by maxnum--> <div class="ft_wp"> <div id="ft" class=" cl"> <div id="flk" > <p> <a href="http://wpa.qq.com/msgrd?V=3&Uin=20600600&Site=光电工程师社区&Menu=yes&from=discuz" target="_blank" title="QQ"><img src="static/image/common/site_qq.jpg" alt="QQ" /></a><span class="pipe">|</span><a href="http://m.oecr.com" >手机版</a><span class="pipe">|</span><a href="http://so.oecr.com" title="站内搜索" target="_blank" >搜索</a><span class="pipe">|</span><a href="http://www.focaloptics.com" title="主办单位：武汉焦点光学技术有限公司" target="_blank" >焦点光学</a><span class="pipe">|</span><a href="http://www.oecr.com" target="_blank">光电工程师社区</a> ( <a href="http://beian.miit.gov.cn/" target="_blank">鄂ICP备17021725号-1</a> <a href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=42011102000821" target="_blank">鄂网安备42011102000821号</a> ) <span id="tcss"></span><script type="text/javascript" src="http://tcss.qq.com/ping.js?v=1eOg" charset="utf-8"></script><script type="text/javascript" reload="1">pgvMain({"discuzParams":{"r2":"1028778","ui":0,"rt":"plugin","pn":1,"qq":"000"},"extraParams":""});</script></p> <p class="xs0"> <span id="debuginfo"> Copyright 2015 光电工程师社区 版权所有 All Rights Reserved. </span> </p> </div> <div id="ftl" > <p>申明：本站为非盈利性公益个人网站，已关闭注册功能，本站所有内容均为网络收集整理，不代表本站立场。如您对某些内容有质疑或不快，请及时联系我们处理！ </p> </div> <div id="frt" > <div class="wp"> <p class="dd01"> © 2001-2022 <a href="http://www.oecr.com" target="_blank">光电工程师社区</a> 网站备案号：<a href="https://beian.miit.gov.cn/">鄂ICP备17021725号</a> 网站公安备案号：<a href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=42011102000821">鄂42011102000821号</a> Powered by <a href="http://www.discuz.net" target="_blank">Discuz!</a> <em>X3.2</em> </p><p class="dd02">GMT+8, 2025-12-16 22:56 </p> </div> </div></div> </div> </div> <!--bottombg结束--> <script src="home.php?mod=misc&ac=sendmail&rand=1765896961" type="text/javascript"></script> <!--<div id="scrolltop"> <span hidefocus="true"><a title="返回顶部" onclick="window.scrollTo('0','0')" class="scrolltopa" ><b>返回顶部</b></a></span> </div> --> <div id="scrolltop"> <span hidefocus="true"><a title="返回顶部" onclick="window.scrollTo('0','0')" class="scrolltopa" ><b>返回顶部</b></a></span> </div> <script type="text/javascript">_attachEvent(window, 'scroll', function () { showTopLink(); });checkBlind();</script> <div id="discuz_tips" style="display:none;"></div> <script type="text/javascript"> var tipsinfo = '1028778|X3.2|0.6||0||0|7|1765896961|c09363d1b2e1002b4e62f25aa160bdde|2'; </script> <script src="http://discuz.gtimg.cn/cloud/scripts/discuz_tips.js?v=1" type="text/javascript" charset="UTF-8"></script></body></html>