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Ti6Al4V和Al12A12的扩散连接界面组织及力学性能

黄西娜 郎利辉 王刚 段文

黄西娜, 郎利辉, 王刚, 段文. Ti6Al4V和Al12A12的扩散连接界面组织及力学性能[J]. 工程科学学报, 2017, 39(7): 1036-1040. doi: 10.13374/j.issn2095-9389.2017.07.008
引用本文: 黄西娜, 郎利辉, 王刚, 段文. Ti6Al4V和Al12A12的扩散连接界面组织及力学性能[J]. 工程科学学报, 2017, 39(7): 1036-1040. doi: 10.13374/j.issn2095-9389.2017.07.008
HUANG Xi-na, LANG Li-hui, WANG Gang, DUAN Wen. Microstructure and mechanical properties of Ti6Al4V and Al12A12 diffusion bonding interface[J]. Chinese Journal of Engineering, 2017, 39(7): 1036-1040. doi: 10.13374/j.issn2095-9389.2017.07.008
Citation: HUANG Xi-na, LANG Li-hui, WANG Gang, DUAN Wen. Microstructure and mechanical properties of Ti6Al4V and Al12A12 diffusion bonding interface[J]. Chinese Journal of Engineering, 2017, 39(7): 1036-1040. doi: 10.13374/j.issn2095-9389.2017.07.008

Ti6Al4V和Al12A12的扩散连接界面组织及力学性能

doi: 10.13374/j.issn2095-9389.2017.07.008
详细信息
  • 中图分类号: TG146.2

Microstructure and mechanical properties of Ti6Al4V and Al12A12 diffusion bonding interface

  • 摘要: 采用热等静压(HIP)工艺连接Al12A12和Ti6Al4V两种不同的航空航天用材料.利用扫描电镜、能谱仪和X射线衍射仪观察连接过渡区的微观组织和组成的演化,并测试其主要的力学性能.结果表明:采用热等静压制备这两种材料的界面连接好;Ti/Al反应层界面处形成了不同的金属间化合物,例如,Al3 Ti、TiAl2和TiAl;连接接头处硬度为163 HV,界面连接处剪切强度达到了23 MPa,比只添加镀层而无中间层的连接强度提高了约17.9%,但低于带有中间层的连接强度.由于过烧和孔隙的形成使得断裂方式是脆性断裂.由此可知,在热等静压成形过程中异种材料的元素发生了相互扩散,在扩散连接处形成了不同的金属间化合物,这些金属间化合物影响连接处的力学性能.
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  • 收稿日期:  2016-11-10

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