Y. Chen
,
X. Chen
,
Q.F. Wang
金属学报(英文版)
The systematic chemical compositions including common C, Si, Mn, Al, and micro- alloying elements of Ti and Nb were designed for high volume fraction of retained austenite as much as possible. The thermo-cycle experiments were conducted by using Gleeble 2000 thermo-dynamic test machine for finding the appropriate composition. The experimental results showed that chemical composition had a significant effect on retained austenite, and the appropriate compositions were determined for commercial production of TRIP steels.
关键词:
carbon content
,
null
,
null
,
null
,
null
代永娟
,
唐荻
,
米振莉
,
江海涛
,
吕建崇
材料工程
doi:10.3969/j.issn.1001-4381.2009.07.010
根据层错能的热力学模型,计算了Fe-XMn-3Si-3Al 系高强度高塑性TWIP钢的层错能.计算结果表明,随锰含量增加Fe-XMn-3Si-3Al系 TWIP钢层错能增加,在此基础上讨论了锰含量对Fe-XMn-3Si-3Al 系TWIP钢变形机制、力学性能和微观组织的影响.在合金中Mn含量的提高使层错能增加,而层错能的增加使Fe-XMn-3Si-3Al系钢表现出不同的变形机制,即逐渐由TRIP效应变为TWIP效应;同时随着Mn含量的提高,合金的抗拉强度降低,而塑性提高.
关键词:
层错能
,
TWIP钢
,
锰含量
,
变形机制
