李峰,李志年,钟景明,王战宏,何力军,许德美.Be/CuCrZr高温热等静压扩散连接接头组织演化及断裂机理[J].稀有金属材料与工程,2019,48(10):3331~3339.[Li Feng,Li Zhinian,Zhong Jingming,Wang Zhanhong,He Lijun,Xu Demei.Microstructure Evolution and Fracture Modes of Be/CuCrZr Joints by Hot Isostatics Pressing Bonding at High Temperature[J].Rare Metal Materials and Engineering,2019,48(10):3331~3339.]
Be/CuCrZr高温热等静压扩散连接接头组织演化及断裂机理
投稿时间:2018-05-17  修订日期:2018-07-26
中文关键词:  Be  CuCrZr  热等静压扩散连接  界面组织演化  断裂机理
基金项目:国家自然科学基金面上项目(项目号51474177)
中文摘要:
      利用电子探针微分析术研究了具有50 μm Ti中间层的Be/CuCrZr高温(780℃ ~ 850 ℃),不同时间(0.5 h ~ 2 h)热等静压扩散连接接头组织演化过程及断裂机理。结果表明:Be/Ti和Ti/CuCrZr界面反应扩散的产物和先后顺序符合能量-通量法则;Be在Ti中的扩散速率大于Cu在Ti中的,但Be/Ti界面反应区形成高Be含量的Ti-Cu-Be三组元相脆性高,是接头性能恶化的主要原因,而Be/CuCrZr界面反应区形成的低Be含量的Ti-Cu-Be三元相对接头性能影响相对较小;HIP连接工艺参数对样品接头性能存在明显影响,800 ℃/2 h/130 MPa连接接头性能最佳,抗拉强度为122.8 MPa,界面结合良好无连接热裂纹,断裂为Be12Ti+Be10Ti混合金属化合物层解理断裂。
Microstructure Evolution and Fracture Modes of Be/CuCrZr Joints by Hot Isostatics Pressing Bonding at High Temperature
英文关键词:beryllium  CuCrZr  Hot Isostatics Pressing Bonding  microstructureSevolution  fracture modes
英文摘要:
      Microstructure evolution and fracture modes of Be/CuCrZr joints with 50μm Ti interlayer by hot isostatics pressing bonding at high temperature (780 ℃ ~ 850 ℃) and different time (0.5 h ~2 h) were studied by mean of EPMA. The results show that forming process of intermetallic compounds at Be/Ti and Ti/CuCrZr interfaces conformed to Flux-Energy law. The diffusion rate of Be in Ti is greater than that of Cu in Ti. But the Ti-Cu-Be ternary intermetallic compound with high Be content formed in the Be/Ti interface reaction zone is very brittleness, which caused the property deterioration of the Be/CuCrZr joint. By contrast, the Ti-Cu-Be ternary intermetallic compounds with low Be content formed in the Ti/CuCrZr interface reaction zone have relatively little influence on Be/CuCrZr joint properties. HIP conditions affected significantly on Be/CuCrZr joint properties. The Be/CuCrZr joint bonded by HIP under 800 ℃, 2 h and130 MPa provided with optimum properties, and tensile strength is up to 122.8 MPa. The joint exhibited the good bonding interface without hot cracks, and the fracture of the joint is caused by cleavage fracture of Be12Ti+Be10Ti mixed intermetallic compound layer.
作者单位E-mail
李峰 西北稀有金属材料研究院宁夏有限公司 稀有金属特种材料国家重点实验室 lifengkjch@163.com 
李志年 西北稀有金属材料研究院宁夏有限公司 稀有金属特种材料国家重点实验室  
钟景明 西北稀有金属材料研究院宁夏有限公司 稀有金属特种材料国家重点实验室  
王战宏 西北稀有金属材料研究院宁夏有限公司 稀有金属特种材料国家重点实验室  
何力军 西北稀有金属材料研究院宁夏有限公司 稀有金属特种材料国家重点实验室  
许德美 西北稀有金属材料研究院宁夏有限公司 稀有金属特种材料国家重点实验室 xdm405@163.com 
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