| 热工艺对Ti3Al基合金力学性能和焊接性影响 |
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| 引用本文： | 刘卫红,曹春晓,李艳,毛唯,李晓红.热工艺对Ti3Al基合金力学性能和焊接性影响[J].航空材料学报,2008,28(3):62-65. |
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| 作者姓名： | 刘卫红 曹春晓 李艳 毛唯 李晓红 |
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| 作者单位： | 1. 北京航空材料研究院,北京,100095;吉林大学,材料科学与工程学院,长春,130025
2. 北京航空材料研究院,北京,100095 |
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| 摘 要： | 研究了不同热工艺(锻造、热轧和固溶处理)条件下Ti-24Al-15Nb-1Mo合金显微结构和力学性能特点,比较了它们钨极氩弧焊的焊接性。结果表明,热加工工艺对母材显微结构和力学性能影响显著,固溶温度影响相对较小;锻制的母材具有较低的冷裂纹敏感性和较高的接头力学性能;降低接头拘束度、控制接头焊后冷却速度和焊后及时热处理是防止裂纹的有效工艺措施。
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| 关 键 词： | Ti3Al基合金 钨极氩弧焊 焊接性 |
| 文章编号： | 1005-5053(2008)03-0062-04 |
| 修稿时间： | 2007年2月8日 |
Hot-Work Processes Affect on Mechanical Properties and Weldability of Ti3Al Based Alloy |
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| LIU Wei-hong,CAO Chun-xiao,LI Yan,MAO Wei,LI Xiao-hong.Hot-Work Processes Affect on Mechanical Properties and Weldability of Ti3Al Based Alloy[J].Journal of Aeronautical Materials,2008,28(3):62-65. |
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| Authors: | LIU Wei-hong CAO Chun-xiao LI Yan MAO Wei LI Xiao-hong |
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| Abstract: | The microstructures and mechanical properties of Ti-24Al-15Nb-1Mo alloy under different hot-work processes(forging,hot-rolling and solution treatment) and weldability by tungsten inert gas(TIG) welding of the alloy have been investigated.The experimental results show that,compared with solution treatment,the different hot-work processes affect on the microstructures and mechanical properties of the alloy more markedly.Under forging condition this alloy has lower cold-crack susceptibility and higher mechanical properties of the joint.Decreasing constrain degree of joint,controlling post-welding cooling rate and carrying out post-welding heat treatment in time may be important ways to prevent cold-crack of the joint. |
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| Keywords: | Ti3Al based alloy Tungsten Inert Gas(TIG) welding weldability |
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