Effect of vanadium on the microstructure and properties of metastable austenitic stainless steel AISI 301LN  

作　　者：HUANG Junxia GU Jiaqing 

机构地区：[1]Research Institute,Baoshan Iron&Steel Co.,Ltd.,Shanghai 201999,China

出　　处：《Baosteel Technical Research》2021年第2期42-47,共6页宝钢技术研究（英文版）

摘　　要：In this study,the effect of vanadium on the microstructure and properties of the metastable austenitic stainless steel AISI 301LN was investigated.Results of the study show that the addition of vanadium can refine grains and increase the strength of AISI 301LN by solution treatment.After 60%cold-rolling reduction,the microstructure of the steel was composed of work-hardened austenite bands and deformation-inducedɑ′martensite.Considerable work-hardening and phase transformation strengthening occurred.After cold rolling and subsequent annealing,the deformation-inducedɑ′martensite was reversed into fine-grained austenite.The work-hardened austenite bands underwent recrystallization;however,the structure of the recrystallized austenite grains was coarser than that of the reversed ones.Simultaneously,the strength of the experimental steels decreased with the increase in annealing temperature.The pinning effect of precipitates of vanadium inhibited the growth of austenite grains.Thus,the desirable combination of strength and ductility was obtained by grain refinement.

关 键 词：MICROALLOY grain refinement strength austenite stainless steel 

分 类 号：TG142.71[一般工业技术—材料科学与工程]