Atomic Interchange Potentials Calculation of Ni-Al-Cr Alloy Based on Microscopic Phase-field Method

摘要：

　　The effects of increasing atomic interchange potentials to the precipitation process and microstructure of Ni-Al-Cr alloy have been simulated based on the microscopic phase-field theory.The first nearest neighbour atomic interchange potentials of Ni-Al-Cr alloy’s for L12 and D022 phase was calculated out according to the formula which were referenced on the relation equation between atomic interchange potentials and long range order parameters by Khachaturyan.The results indicated that Ni-Al (WNi-Al) and Ni-Cr (WNi-Cr)’s first nearest neighbor atomic interaction potentials will increase linearly while the temperatures rose.Moreover WNi-Al increased but WNi-Cr decreased roughly linearly if Al atom’s concentration rose,and conversely inversed.In addition,these atomic interchange potentials changing with temperature and concentration were in good agreement with earlier study.

关键词： Microscopic phase-field:The first nearest neighbor:Atomic interchange potentials:Ni-Al-Cr alloy

作者: Weiping Dong Zhang Jing Chen Zheng

作者单位: State Key Laboratory of Solidification Processing, Northwestern Polytechnical University,Xian 710072 China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 739-746

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）