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Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nd合金焊接性
Weldability of Ti-5A14Sn-2Zr-lMo-0. 25Si-lNd Alloy
查看参考文献6篇
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文摘
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考察了Ti-5A1-4Sn-2Zr-1Mo-0．25Si-1Nd合金焊接接头力学性能。结果表明，Ti-5A1-4Sn-2Zr-1Mo-O．25Si- 1Nd钛合金的焊接热影响区存在硬化倾向，塑性不足。焊前预热150℃可使焊接热影响区塑性明显改善。通过改变焊缝合金系统和焊后热处理制度等工艺措施，可以调整焊缝的综合力学性能，使之达到技术指标要求。文中还探讨了Ti -5A1-4Sn-2Zr-1Mo-0．25Si-1Nd合金焊接脆性的机理，认为延晶界成串分布的富钕相和晶内的马氏体转变组织是根本原因。 |
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其他语种文摘
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The weldability of Ti-5AWSn-2Zr-lMo-0.25Si-lNd alloy was investigated. The test results showed that the heat affected zone ( HAZ) of Ti-5A14Sn-2Zr-lMo-0.25Si-lNd alloy weldment exhibit obvious ductility decrease and the 150 t preheat can improve the HAZ ductility to a certain extent. Combined with alloy system adjustment and appropriate postweld heat-treatment, the weldment comprehensive properties were controlled to meet the specifications. Nd-rich particle clusters along the grain boundaries and the inner grain martensite structure were considered to be two essential factors embrittling the Ti-5Al-4Sn-2Zr-lMo-0. 25Si-lNd alloy weldments. |
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来源
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焊接学报
,2003,24(3):9-12 【核心库】
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关键词
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Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nd
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焊接性
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富钕相
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地址
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中国科学院金属研究所, 沈阳, 110016
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0253-360X |
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学科
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金属学与金属工艺 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:1316742
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参考文献 共
6
共1页
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