| 扩散钎焊钛合金多层板的界面强度研究和断口分析 |
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| 引用本文： | 静永娟,侯金保,岳喜山,李晓红. 扩散钎焊钛合金多层板的界面强度研究和断口分析[J]. 失效分析与预防, 2013, 0(3): 136-140,166 |
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| 作者姓名： | 静永娟 侯金保 岳喜山 李晓红 |
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| 作者单位： | 北京航空制造工程研究所,北京100024 |
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| 摘 要： | 以TC4钛合金为研究对象,采用扩散钎焊方法制备钛合金多层板,对多层板的界面组织、连接强度及失效断口形貌等进行测试分析,以供钛合金薄板的连接提供技术参考。研究证明:扩散钎焊界面为针状魏氏体组织,界面无化合物形成;室温下界面强度达到母材强度的94%,350℃下界面平均强度为690 MPa,延伸率在11%以上;界面魏氏体组织成为裂纹扩展速率增大和界面失效的主要因素。
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| 关 键 词： | 钛合金 扩散钎焊 强度 断口 |
Joint Strength and Fracture Surface for the Diffusion Brazed Multi-layers Titantium Alloys |
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| JING Yong-juan,HOU Jin-bao,YUE Xi-shan,LI Xiao-hong. Joint Strength and Fracture Surface for the Diffusion Brazed Multi-layers Titantium Alloys[J]. Failure Analysis and Prevention, 2013, 0(3): 136-140,166 |
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| Authors: | JING Yong-juan HOU Jin-bao YUE Xi-shan LI Xiao-hong |
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| Affiliation: | (Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China) |
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| Abstract: | To provide reference for titanium alloy sheet connection technology, the muhilayer TCA alloy was made by diffusion welding. The interface compositions, interface strength and the fracture were analyzed. The results showed that the interface strength was up to 94% of that of the matrix at room temperature. It was 690 MPa in average at 350 ℃ with tensile elongation as 11%. The main factor of the fracture was ascribed to the extended area with coarse widmanstaten structure, which induced the incensement of the crack extending |
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| Keywords: | titantium alloys diffusion welding strength fracture |
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