High temperature deformation behavior and microstructure evolution of wrought nickel-based superalloy GH4037 in solid and semi-solid states

作     者：Ju-fu JIANG Guan-fei XIAO Ying WANG Ying-ze LIU Ying ZHANG 姜巨福;肖冠菲;王迎;刘英泽;张颖

作者机构：School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China School of Mechatronics EngineeringHarbin Institute of TechnologyHarbin 150001China 

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

年 卷 期：2020年第30卷第3期

页      面：710-726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：Project(51575127)supported by the National Natural Science Foundation of China 

主　　题：nickel-based superalloy high temperature deformation semi-solid microstructure evolution dynamic recrystallization 

摘      要：Cylindrical samples of Ni-based GH4037 alloy were compressed at solid temperatures(1200,1250 and 1300℃) and semi-solid temperatures(1340,1350,1360,1370 and 1380℃) with different strain rates of 0.01,0.1 and 1 *** temperature deformation behavior and microstructure evolution of GH4037 alloy were *** results indicated that flow stress decreased rapidly at semi-solid temperatures compared to that at solid ***,the flow stress continued to increase after reaching the initial peak stress at semi-solid temperatures when the strain rate was 1 *** increasing the deformation temperature,the size of initial solid grains and recrystallized grains *** semi-solid temperatures,the grains were equiaxed,and liquid phase existed at the grain boundaries and inside the *** dynamic recrystallization(DDRX) characterized by grain boundary bulging was the main nucleation mechanism for GH4037 alloy.