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王翠萍,秦诗洋,卢勇,魏振帮,于金鑫,邹宏伟,杨水源,韩佳甲,刘兴军.Ni-Cr-W三元系富Ni侧fcc相的互扩散及原子迁移率参数研究[J].稀有金属材料与工程(英文),2020,49(2):441~446.[wangcuiping,Qin Shiyang,Lu Yong,Wei Zhenbang,Yu Jinxin,Zou Hongwei,Yang Shuiyuan,Han Jiajia and Liu Xingjun.Interdiffusion and Atomic Mobilities in Ni-rich fcc Ni-Cr-W Alloys[J].Rare Metal Materials and Engineering,2020,49(2):441~446.]
Interdiffusion and Atomic Mobilities in Ni-rich fcc Ni-Cr-W Alloys
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Received:September 17, 2018  Revised:November 08, 2018
DOI:
Key words: Ni-Cr-W alloys  Atomic mobility  Diffusion couples  Interdiffusion coefficients  DICTRA
Foundation item:国家重点研发计划(2016YFB0701401),国家自然科学基因面上项目(51771158),(51471138)。
Author NameAffiliation
wangcuiping,Qin Shiyang,Lu Yong,Wei Zhenbang,Yu Jinxin,Zou Hongwei,Yang Shuiyuan,Han Jiajia and Liu Xingjun  
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Abstract:
      Six diffusion couples of Ni-Cr-W ternary alloys were prepared, annealed at 1473 K for 72 hours and measured by using the electron probe microanalysis combined with Whittle and Green method in order to determine the interdiffusion coefficients. The experimental interdiffusion coefficients were critically assessed to obtain the atomic mobilities by means of DICTRA software package. A good agreement has been obtained by comprehensive comparison between the experimental data and the model-predicted diffusion properties, which verifies the reliability of the atomic mobilities of Ni, Cr and W in Ni-Cr-W alloys. The diffusion phenomena, such as diffusion paths and the concentration-distance profiles in the Ni-Cr-W ternary system can be reasonably described by the presently obtained atomic mobilities.