会议专题

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

  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.

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

Weiping Dong Zhang Jing Chen Zheng

State Key Laboratory of Solidification Processing, Northwestern Polytechnical University,Xian 710072 China

国际会议

the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

太原

英文

739-746

2012-07-13(万方平台首次上网日期,不代表论文的发表时间)