杨东然,赵宇宏,杨玲,侯华

• 1:中北大学材料科学与工程学院

摘要(Abstract)：

采用三元微观相场动力学模型,研究了Ni75Al14Mo11合金的沉淀过程及其γ'相的原子占位现象,对合金的微观组织演化图像、序参数及占位几率进行了分析,结果表明,Mo与Al元素的加入使该合金中首先析出L10结构,随后发生L10结构向L12结构的原位结构转变;γ'相沉淀析出方式是等成分有序化兼失稳分解机制;γ'有序相中Al、Mo原子共同占据了面心立方的顶角位,且Al原子在γ'有序相中顶角β2位的占位几率始终稍大于Mo原子。

关键词(KeyWords)： Ni75Al14Mo11合金;微观相场;γ'相沉淀;原子占位

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51204147);; 科技部国际科技合作项目(2011DFA50520);; 山西省回国留学人员科研项目(2011-重点6);; 教育部博士点新教师基金(20101420120005)

作者(Author): 杨东然,赵宇宏,杨玲,侯华

DOI: 10.13289/j.issn.1009-6264.2014.02.035

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