Effect of removing Al and Ti elements on peak flow stress of nickel-based heat-resistant alloy 617
作者机构：Faculty of Mechanical and Material EngineeringHuaiyin Institute of TechnologyHuaian223003JiangsuChina Jiangsu Key Laboratory of Advanced Manufacturing TechnologyHuaiyin Institute of TechnologyHuaian223003JiangsuChina Institute for Special SteelsCentral Iron and Steel Research Institute Co.Ltd.Beijing100081China
出 版 物：《Journal of Iron and Steel Research(International)》 (钢铁研究学报（英文版）)
年 卷 期：2023年第30卷第2期
页 面：384-391页
核心收录：
学科分类：08[工学] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学]
基 金：This work was supported by National Natural Science Foundation of China(Grant No.52104375) Natural Science Foundation of Jiangsu Province(Grant No.BK20201066) National Key Research and Development Program of China(Grant No.2017YFB0305203) Basic Science(Natural Science)Research of Institution of Higher Education of Jiangsu Province(Grant No.22KJA460010).
主 题：Peak flow stress Nickel-based heat-resistant alloy Slip band Stacking fault energy
摘 要：The hot deformation behavior and the microstructure characteristics of alloy 617 and alloy C-HRA-2 were compared and analyzed.The removal of Al and Ti elements has a significant change in the hot deformation of the alloy,and there are two opposite effects on the flow stress before and after recrystallization.The results show that the removal of Al and Ti elements increases the flow stress of the alloy under high temperature or low strain rate deformation conditions.This is mainly due to the increase in the stacking fault energy of the alloy so that the alloy contains a higher twin boundary fraction after dynamic recrystallization(DRX).However,before DRX occurs,that is,at low temperature and high strain rate,the flow stress of this alloy is relatively reduced.This is due to the reduction in Peierls-Nabarro stress,making the alloy more prone to dislocation slip.
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