Inconel625合金的热变形行为及热加工图  

Hot deformation behavior and hot processing map of Inconel625 alloy

作　　者：张继舜 廖振洋 杨钢[1] 唐正焮 陈其为 孔荣宗[2] Zhang Jishun;Liao Zhenyang;Yang Gang;Tang Zhengxin;Chen Qiwei;Kong Rongzong(Research Institute of Special Steels,Central Iron and Steel Research Institute Company Limited,Beijing 100081,China;Hypervelocity Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang Sichuan 621000,China)

机构地区：[1]钢铁研究总院有限公司特殊钢研究院,北京100081 [2]中国空气动力研究与发展中心超高速空气动力研究所,四川绵阳621000

出　　处：《金属热处理》2023年第8期52-57,共6页Heat Treatment of Metals

基　　金：国家重点研发计划(2021YFB3704102)。

摘　　要：采用Gleeble-3800热模拟试验机开展了Inconel625合金变形温度为950~1200℃、应变速率为0.001~10 s^(-1)的热压缩试验,分析了其热变形行为和不同变形条件下的微观组织演化,构建了Inconel625合金的热加工图。结果表明,Inconel625合金的流变应力随应变速率增加而升高,随变形温度升高而降低;变形温度越高、压缩应变速率越低,越容易发生动态再结晶。Inconel625合金最佳热加工工艺参数范围为变形温度1010~1050℃,应变速率0.01~0.13 s^(-1)。Thermal compression test of Inconel625 alloy with deformation temperature of 950-1200℃and strain rate of 0.001-10 s^(-1) was carried out by Gleeble-3800 thermal simulation testing machine.The hot deformation behavior and microstructure evolution under different deformation conditions were analyzed.The hot processing map of the Inconel625 alloy was constructed.The results show that the flow stress of the Inconel625 alloy increases with the increase of strain rate and the decrease of deformation temperature.The higher the deformation temperature and the lower the compression strain rate,the more prone to dynamic recrystallization.The optimum hot processing parameters of the Inconel625 alloy are as follows:deformation temperature of 1010-1050℃,strain rate of 0.01-0.13 s^(-1).

关 键 词：INCONEL625合金 热变形 再结晶 热加工图 

分 类 号：TG312[金属学及工艺—金属压力加工]