热成形工艺对<strong>24Mn2CrNb</strong>钢组织和性能的影响

热成形工艺对24Mn2CrNb钢组织和性能的影响

王恒霖, 黄文静, 朱国辉, 丁汉林, 王子健, 项重辰

Impact of Hot Stamping Process Parameters on Microstructure and Mechanical Properties of 24Mn2CrNb Automotive Steel

WANG Henglin, HUANG Wenjing, ZHU Guohui, DING Hanlin, WANG Zijian, XIANG Zhongchen

表2 不同分级淬火24Mn2CrNb钢的力学性能

Table 2 Mechanical properties of 24Mn2CrNb steel by different quenching processes

T / ^oC	R_p0.2 / MPa	R_m / MPa	A20 / %	R_m × A20 / %
930 ^oC/5 min	1377	1815	11.13	20.20
930 ^oC/5 min + 250 ^oC/30 s	1213	1719	11.70	20.11
930 ^oC/5 min + 450 ^oC/30 s	1062	1563	12.50	19.54