材料期刊网

Mechanism of the Interfacial Reaction of AI_2O_3/Medium Mn Steel Containing Nb

Sirong YU Yaohui LIU Zhenming HE Dept.of Metallic Materials Engineering , Jilin University of Technology , Changchun , 130022 , China

材料科学技术（英文）

The mechanism of the interfacial reaction of Al_2O_3/medium Mn steel containing Nb was studied by means of the observation on the interfacial reaction phenomenon of Al_2O_3/medium Mn steel,and the analyses on the interracial phases.The results show that when T≥1550℃,the interfacial reac- tion of Al_2O_3/medium Mn steel containing Nb happened.In the medium Mn steel matrix,Nb exists in the form of NbC.NbC are the nucleating base of CO gas bubbles.

关键词: Nb , null , null , null

Influences of Austenization Temperature and Annealing Time on Duplex Ultrafine Microstructure and Mechanical Properties of Medium Mn Steel

Chang WANG , Wen-quan CAO , Yun HAN , Cun-yu WANG , Chong-xiang HUANG , Han DONG

钢铁研究

关键词:

7.9Mn-1.4Si-0.07C钢高强韧机理研究

邓江宁 , 徐天帅 , 邱丽娜 , 申勇峰

材料与冶金学报

通过热轧、温轧、奥氏体化、两相区退火处理得到7.9Mn-1.4Si-0.07C钢板,该材料的拉伸强度及塑性随奥氏体化温度不同而具有显著差异.奥氏体化温度降低,室温下奥氏体含量升高,综合力学性能提高.当奥氏体化温度由900℃降低为800℃时,所得到钢板的奥氏体体积分数由15％增加到28％,拉伸强度由1 150 MPa提高到1 340 MPa,塑性由21％提高至27％.实验钢优异的力学性能源于其中大量的超细铁素体及奥氏体,细晶强化使其具有超高强度,铁素体基体及变形过程中奥氏体向马氏体相变提供了良好的塑性.基体组织中的位错强化,形变诱导马氏体转变的TRIP效应等是增强该钢板加工硬化能力的主要因素.

关键词: 中锰钢 , 温轧 , 热处理 , 力学性能