Effect of preforming on the formability of TRIP steel sheet forming processes

查看全文 作　　者：LUO Aihui1,2),DAN Wenjiao3) and ZHANG Weigang3) 1) Auto Steel Division,Research Institute,Baoshan Iron & Steel Co.,Ltd.,Shanghai 201900,China 2) State Key Laboratory of Development and Application Technology of Automotive Steels (Baosteel),Shanghai 201900,China 3) School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China 出　　处：《Baosteel Technical Research》索引2012年第6卷第1期,共5页 基　　金：supported by the National Natural Science Foundation of China (No.51075266);the Ministry of Education and Ministry of Finance of China for'Knowledge-based Ship-Design Hyper-Integrated Platform (KSHIP) '(No.200512) 摘　　要：In this study,the formability of transformation-induced plasticity (TRIP) steel is studied during deep-drawing processes with preforming.The effects of preforming on theminimum thickness of can are investigated with a constitutive model accompanying strain-induced martensite transformation in prestrain condition.The constitutive model has been implemented into ABAQUS/UMAT for analysis of TRIP steel-forming processes.The results show that preforming slightly influences the thickness uniformity of TRIP steel in forming. 关 键 词：martensite transformation TRIP steel DEEP-DRAWING preforming FORMABILITY