Abstract: Based on the compression deformation at room temperature and heat treatment of extruded FGH4096 alloy cylinder and double-cone specimens, with the DEFORM numerical simulation, the critical equivalent strain window condition of critical grain growth (CGG) at room tempera-ture compression for extruded FGH4096 alloy was determined, and the mechanism of critical grain growth at room temperature compression for extruded FGH4096 alloy was analyzed. The results show that the critical equivalent strain window condition at room temperature compression at the compression speed of 0.01 mm/s for extruded FGH4096 alloy is 0.03—0.07, and it is 0.005—0.06 at the compression speed of 0.05 mm/s. The critical grain growth of room temperature deformation for extruded FGH4096 alloy is related to the degree of grain deformation and the disappearance of Zener pinning at grain boundary after γ′ phase dissolution, and it is shown as the abnormal grain character of coarse grain consuming fine grain in the small deformation region.
刘松浩, 司家勇, 陈龙. 挤压态FGH4096合金室温变形及临界晶粒长大研究[J]. 材料导报, 2021, 35(14): 14107-14114.
LIU Songhao, SI Jiayong, CHEN Long. Study on Room Temperature Deformation and Critical Grain Growth for Extruded FGH4096 Alloy. Materials Reports, 2021, 35(14): 14107-14114.
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