| DD402/FGH95扩散偶中单晶合金γ′相筏形化与其形成元素的扩散 |
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| 引用本文： | 阎来成,孙家华,董德俊,赵京晨,燕平. DD402/FGH95扩散偶中单晶合金γ′相筏形化与其形成元素的扩散[J]. 北京科技大学学报, 2001, 23(1) |
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| 作者姓名： | 阎来成 孙家华 董德俊 赵京晨 燕平 |
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| 摘 要： | 通过研究不同温度时热等静压(HIP)多元扩散偶DD402/FGH95中的Al,Ta和Ti元素的扩散规律，发现DD402单晶中存在Al和Ta元素的上坡扩散．因此单晶中在近结合界面处形成了Al ,Ta和Ti元素的富集区以及γ′相的筏形化．对Al和Ta元素的扩散流量及扩散深度进行计算．计算结果与试验结果相吻合．
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| 关 键 词： | 扩散 单晶合金 粉末合金 筏形化 |
Rafting of γ′Phase and Diffusion of γ′Forming Elements in Single Crystal for DD402/FGH95 of Diffusion Couple |
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| YAN Laicheng,SUN Jiahua,DONG Dejun,ZHAO Jingchen,YAN Ping. Rafting of γ′Phase and Diffusion of γ′Forming Elements in Single Crystal for DD402/FGH95 of Diffusion Couple[J]. Journal of University of Science and Technology Beijing, 2001, 23(1) |
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| Authors: | YAN Laicheng SUN Jiahua DONG Dejun ZHAO Jingchen YAN Ping |
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| Abstract: | Regularities of interdiffusion of Al,Ti and Ta for DD402/FGH95 couple during HIP at different temperatures were studied. The up-hill diffusion flux of Al and Ta in single crystal DD402 was found. As a result, a rich zone of γ′phase forming elements and rafted γ′phase were developed in single crystal DD402 close to the bonded interface. The diffusion fluxes and diffusion depths of Al and Ta were calculated. The calculated results were corresponding to those the experiments. |
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