Evading strength−ductility trade-off of GH605 alloy using magnetic field-assisted undercooling treatment

作     者：Yi-xuan HE Fan BU Zhang-chi BIAN Ming-xiu XIANG Meng-meng ZHOU Xu-dong LIU Lei ZHU Jun WANG Jin-shan LI 贺一轩;卜凡;边张驰;相明秀;周蒙蒙;刘栩东;朱雷;王军;李金山

作者机构：State Key Laboratory of Solidification ProcessingNorthwestern Polytechnical UniversityXi’an 710072China Center of Advanced Lubrication and Seal MaterialsNorthwestern Polytechnical UniversityXi’an710072China Collaborative Innovation Center of NPUShanghai 201108China Institute of Superconducting Materials and Applied TechnologyNorthwestern Polytechnical UniversityXi’an 710072China Shaanxi Key Laboratory of Electrical Materials and Infiltration TechnologyXi’an University of TechnologyXi’an 710048China 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2024年第34卷第8期

页      面：2575-2588页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the fund of National Key Laboratory for Precision Hot Processing of Metals,China(No.6142909200104) State Key Laboratory of Solidification Processing(NPU),China(No.2022-TS-08), National Training Program of Innovation and Entrepreneurship for Undergraduates.We thank Dr.ZHENG from ZKKF(Beijing)Science&Technology Company for supporting the characterization of the materials 

主　　题：undercooling treatment magnetic field GH605 alloy strengthening mechanisms 

摘      要：Undercooling solidification under a magnetic field(UMF)is an effective way to tailor the microstructure and properties of Co-based *** this study,by attributing to the UMF treatment,the strength−ductility trade-off dilemma in GH605 superalloy is successfully *** UMF treatment can effectively refine the grains and increase the solid solubility,leading to the high yield *** main deformation mechanism in the as-forged alloy is dislocation *** contrast,multiple deformation mechanisms,including stacking faults,twining,dislocation slipping,and their strong interactions are activated in the UMF-treated sample during compression deformation,which enhances the strength and ductility *** addition,the precipitation of hard Laves phases along the grain boundaries can be obtained after UMF treatment,hindering crack propagation during compression deformation.