基于三元相图预测高Mo强化镍基单晶高温合金中拓扑密排相的类型  

Type of topologically close-packed phase in Mo-rich Ni based single crystal superalloys predicted based on ternary phase diagrams

作　　者：艾诚 赵鑫博 张传 郭敏[3] 黄太文[3] 张军[3] 刘林[3] AI Cheng;ZHAO Xin-bo;ZHANG Chuan;GUO Min;HUANG Tai-wen;ZHANG Jun;LIU Lin(School of Materials Science and Engineering,Chang’an University,Xi’an 710064,China;Computherm LLC,Middleton,WI,53562,USA;State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi’an 710072,China)

机构地区：[1]长安大学材料科学与工程学院,西安710064 [2]Computherm LLC,Middleton,WI,53562,USA [3]西北工业大学凝固技术国家重点实验室,西安710072

出　　处：《中国有色金属学报》2023年第4期1074-1084,共11页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(51701020,52071267);中央高校基本科研业务费资助项目(300102311401)。

摘　　要：采用热力学计算获得的三元相图,预测了高Mo强化镍基单晶高温合金中拓扑密排相(TCP相)的类型。结果表明,高Mo强化单晶高温合金中TCP相的析出行为可以采用Ni-Mo-Re、Co-Mo-Re、Ni-Cr-Mo、Co-Cr-Mo、Ni-Cr-Re和Co-Cr-Re三元体系来描述。同时,上述三元体系中可形成NiMo相、P相、σ相、μ相和R相5种TCP相。Ni-Mo-Al-Ta体系中只形成NiMo相,Re和Cr的添加均促进了P相和σ相的形成,而Co的添加促进了μ相的形成。The thermodynamic calculation of ternary phase diagrams was used to predict the type of topologically close-packed(TCP)phase in Mo-rich Ni based single crystal superalloys.The precipitation behavior of TCP phase in Mo-rich single crystal superalloys can be described by Ni-Mo-Re,Co-Mo-Re,Ni-Cr-Mo,Co-Cr-Mo,Ni-Cr-Re and Co-Cr-Re ternary systems,and NiMo,P,σ,μand R phases tends to form in above ternary systems.Meanwhile,only NiMo phase exist in Ni-Mo-Al/Ta system,both Re and Cr additions promote the formation of P phase andσphase,and Co addition is found to promote the formation ofμphase.

关 键 词：镍基单晶高温合金 高Mo强化 TCP相 三元相图 热力学计算 

分 类 号：TG132.3[一般工业技术—材料科学与工程]