Comparative research on the formability of several ultra-high-strength steels
作者机构：Research InstituteBaoshan Iron&Steel Co.Ltd.Shanghai 201999China State Key Laboratory of Development and Application Technology of Automotive Steels(Baosteel)Shanghai 201999China
出 版 物：《Baosteel Technical Research》 (宝钢技术研究（英文版）)
年 卷 期：2023年第17卷第3期
页 面：18-24页
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
主 题：ultra-high-strength steel formability TRIP effect
摘 要：Three kinds of ultra-high-strength steels are subjected to uniaxial tensile,forming limit,and hole expansion tests to characterize their material forming *** show that the elongation of S1500 reaches 12.9%and is higher than that of MS1500 with the same strength grade but is lower than that of *** forming limit of S1500 steel is higher than that of MS1500 but lower than that of *** instantaneous n-value of the material changes with the volume fraction of retained *** hole expansion ratios of S1500,MS1500,and QP980 steels are 31.3%,32.2%,and 28.3%,*** hole expansion ratio of QP steel increases slightly with the increase in strength *** behavior is contrary to the change trend of elongation and forming *** the three kinds of materials,QP980 steel has the best global formability,and S1500 steel has better global formability than martensitic steel with a similar strength *** local formability of the materials improves slightly with the decrease in the amount of retained ***1500 may have the best local formability in accordance with engineering practice.
维普期刊数据库
同方期刊数据库