摘要
运用微观相场法研究温度对DO22结构反位缺陷的影响。结果显示,无论是α亚晶格上的反位缺陷VNi和AlNi还是β亚晶格上的NiV和AlV,其值均随温度升高而升高。β亚晶格上的反位缺陷NiV随温度升高而升高的速率和幅度最大,并且无论是在低温还是高温下其值均大于其他类型的反位缺陷值。Al原子在α亚晶格的占位几率高于在β亚晶格的占位几率,Al优先占据α亚晶格。
The relationship between antisite defect of DO22 structure and temperature is investigated by microscopic phase field method.The results show that both antisite defect VNi and AlNi located in α sublattice and NiV as well as AlV located in β sublattice are all increased with increase of the temperature.VNi is the most sensitive defect to temperature,and it is the main antisite type for its value higher than other antisite defects at any temperature,especially at high temperature.The occupy probability of Al ...
出处
《有色金属》
CSCD
北大核心
2010年第3期6-11,共6页
Nonferrous Metals
基金
国家自然科学基金资助项目(50875217
10902086
50941020)
陕西省自然科学基金资助项目(SJ08-ZT05
SJ08-B14)
西北工业大学博士论文创新基金资助项目(CX200806)
关键词
金属材料
反位缺陷
微观相场
Ni3V
择优占位
metal material
antisite defect
microscopic phase field
Ni3V
site preference
