摘要
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。
The stacking fault energy of the Fe-XMn-3Si-3Al system alloys was calculated according to the thermodynamic model of stacking fault energy. The calculated results showed that the stacking fault energy of Fe-XMn-3Si-3Al system alloys increased with increasing manganese content. The influence of Manganese content on the deformation mechanisms, mechanical properties and microstructure of Fe XMn-3Si 3Al system alloys was discussed based on above results. With the increasing of manganese content, the Fe XMn-3Si-3Al system alloys show different deformation mechanisms from the TRIP effect turns to the TWIP effect. At the same time, the strength decreasing and the elongation increasing.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2009年第7期39-42,共4页
Journal of Materials Engineering
基金
国家自然科学基金(50575022)
国家高技术研究发展计划(863计划)(2008AA03E502)
关键词
层错能
TWIP钢
锰含量
变形机制
stacking fault energy
TWIP steel
manganese content
deformation mechanism
