| 镍基高温合金HIP扩散连接的组织和性能 |
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| 引用本文： | 闫来成,燕平,赵京晨.镍基高温合金HIP扩散连接的组织和性能[J].钢铁研究学报,2012,24(1):48-53. |
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| 作者姓名： | 闫来成 燕平 赵京晨 |
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| 作者单位： | 1. 安泰科技股份有限公司,北京,100081
2. 钢铁研究总院高温材料所,北京,100081 |
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| 摘 要： | 采用热等静压扩散连接工艺，获得了DD402单晶合金与FGH95合金的扩散偶。研究了热等静压温度对扩散偶的持久性能、组织结构的影响。结果表明，不同温度热等静压的扩散偶均实现了冶金结合；结合界面区形成了一个组织过渡区，DD402单晶合金中的γ′ 相粒子在HIP过程中发生了筏形化；热处理后结合界面区的γ′ 相形貌和尺寸未发生明显变化。1166℃热等静压扩散偶的650℃持久性能偏低，断口在DD402单晶合金侧，断裂面从结合界面区的大尺寸γ′ 相起始，沿{111}滑移面向筏形γ′ 相区扩展。
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| 关 键 词： | 镍基高温合金 扩散连接 组织 性能 热等静压 |
Microstructure and Properties of Diffusion Couple of Superalloy Bonded by HIP |
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| YAN Lai-cheng,YAN Ping,ZHAO Jing-chen.Microstructure and Properties of Diffusion Couple of Superalloy Bonded by HIP[J].Journal of Iron and Steel Research,2012,24(1):48-53. |
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| Authors: | YAN Lai-cheng YAN Ping ZHAO Jing-chen |
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| Affiliation: | 1. Advanced Technology and Materials Co Ltd, Beijing 100081, China ;2. High Temperature Material Research Institute, Central Iron and Steel Research Institute, Beijing 100081, China |
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| Abstract: | The diffusion couple of single crystal DD402 and FGH95 were obtained by hot isostatic pressing(HIP) diffusion bonding.The effect of HIP temperature on the stress-rupture life and microstructure of diffusion couples were investigated.The results indicate that all diffusion couples are joined metallurgically under different HIP temperatures;In bonded interface zone,a transformation zone of microstructure is formed and the γ′ particles of single crystal DD402 are rafted during HIP;But γ′ size and morphology are not changed obviously during heat treatment.The 650 ℃ stress-rupture life of bimetallic specimens bonded by 1 166 ℃ HIP is lower;fractures are broken on the side of single crystal DD402,the fracture place is produced from the situation of big γ′ particles in bonding interface,and spread along {111} slide place. |
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| Keywords: | nickel-base superalloy diffusion bonding~microstructure property~hot isostatic pressing |
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