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| 高铝TRIP钢的微观组织与残余奥氏体稳定性研究 | |
| 引用本文： | 何方,孙新军,刘清友,项金钟.高铝TRIP钢的微观组织与残余奥氏体稳定性研究[J].钢铁,2009,44(12). |
| 作者姓名： | 何方 孙新军 刘清友 项金钟 |
| 作者单位： | 1. 云南大学物理科学与技术学院,云南,昆明,650091;钢铁研究总院,北京,100081 2. 钢铁研究总院,北京,100081 3. 云南大学物理科学与技术学院,云南,昆明,650091 |
| 摘 要： | 主要研究了高Al TRIP钢的显微组织与残余奥氏体的稳定性。通过光学显微镜、SEM、TEM观察了其微观组织。通过TEM观察了钢中马氏体与贝氏体的形貌。通过电子衍射斑分析,得出了残余奥氏体与马氏体的位向关系为K-S位向关系,奥氏体母相与贝氏体的位向关系为N-W位向关系。为研究残余奥氏体机械稳定性,对试验用钢进行了不同应变量的单向拉伸,用X射线测量了残余奥氏体体积分数。结果表明,真应变小于0.11时残余奥氏体体积分数随应变量增加而减少。真应变量大于0.11后,残余奥氏体体积分数随应变量增加变化不大。为了研究残余奥氏体热稳定性,将试验用钢冷却至不同的温度。发现高Al TRIP钢残余奥氏体热稳定性很高,深冷至-196℃条件下不发生马氏体转变。 |
| 关 键 词： | 残余奥氏体 位向关系 相变诱导塑性 TRIP钢 奥氏体热稳定性 |
Microstructure and Stability of Retained Austenite in a High Al-Containing TRIP Steel |
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| HE Fang,SUN Xin-jun,LIU Qing-you,XIANG Jin-zhong.Microstructure and Stability of Retained Austenite in a High Al-Containing TRIP Steel[J].Iron & Steel,2009,44(12). | |
| Authors: | HE Fang SUN Xin-jun LIU Qing-you XIANG Jin-zhong |
| Affiliation: | HE Fang1,2,SUN Xin-jun2,LIU Qing-you2,XIANG Jin-zhong1(1.Physical Science and Technology Institute,Yunnan University,Kunming 650091,Yunnan,China,2.Central Iron and Steel Research Institute,Beijing 100081,China) |
| Abstract: | The morphology and stability of retained austenite in a high Al-containing TRIP steel were studied by means of optical microscope,SEM,TEM and X-ray diffraction.The results show that the orientation relationship between martensite and retained austenite is K-S relationship,and the orientation relationship between bainite and retained austenite is N-W relationship.It is found that the volume fraction of retained austenite decreases with strain increasing when the true strain is smaller than 0.11.However,when ... |
| Keywords: | TRIP steel microstructure retained austenite orientation relationship thermal stability |
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