冷轧变形对CrCoNi合金组织与性能的影响  

Effect of cold rolling deformation on microstructure and properties of CrCoNi alloy

作　　者：陈今良 冯中学[2] 张利民 易健宏[2] Chen Jinliang;Feng Zhongxue;Zhang Limin;Yi Jianhong(School of Vanadium and Titanium,Panzhihua University,Panzhihua Sichuan 617000,China;School of Materials Science and Engineering,Kunming University of Science and Technology,Kunming Yunnan 650093,China)

机构地区：[1]攀枝花学院钒钛学院,四川攀枝花617000 [2]昆明理工大学材料科学与工程学院,云南昆明650093

出　　处：《金属热处理》2022年第5期204-207,共4页Heat Treatment of Metals

基　　金：攀枝花市科技指导计划(2020ZD-G-10);云南省科技厅面向基金(908075156031);钒钛资源综合利用四川省重点实验室项目(2021FTSZ13);攀枝花学院校级项目(2021YB009)。

摘　　要：针对磁悬浮熔炼的铸态CrCoNi合金,在室温条件下,进行变形量为50%的冷轧变形,研究了铸态及变形后合金的物相成分、显微组织、力学性能及耐腐蚀性能。结果发现,铸态CrCoNi合金在变形前后没有发生物相变化,依旧为FCC单相结构;铸态组织分布不均匀,经过轧制变形后,晶粒被破碎与拉长;随变形道次增加,强度提升,塑性下降。同时发现,相比于铸态,经过轧制变形后的CrCoNi合金耐腐蚀性得到改善,且均优于304不锈钢。Phase composition, microstructure, mechanical properties and corrosion resistance of the as-cast and cold rolled CrCoNi alloys after magnetic suspension melting were studied at room temperature with deformation of 50%. The results show that, before and after cold rolling, there is no phase change of the as-cast CrCoNi alloy, still being the FCC single phase structure. The distribution of as-cast microstructure is uneven. After rolling deformation, the grains are broken and elongated. With the increase of deformation pass, the strength of the alloy increases, while the plastic decreases. Meanwhile compared with the as-cast alloy, after rolling, the corrosion resistance of the CrCoNi alloy is improved, and both are better than that of the 304 stainless steel.

关 键 词：CrCoNi合金 冷轧变形 显微组织 耐腐蚀性 

分 类 号：TG337[金属学及工艺—金属压力加工]