双辊铸轧高锰TRIP钢薄带的组织性能研究  

Study on the Microstructure and Properties of Twin-Roll Strip Casting High Manganese TRIP Steel

作　　者：张维娜[1] 刘振宇[1] 王国栋[1] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110004

出　　处：《轧钢》2010年第1期20-23,共4页Steel Rolling

基　　金：自然科学基金资助项目(50874131)

摘　　要：研究了采用双辊铸轧技术生产的高锰TRIP钢(Fe-15Mn-3Si-3Al)薄带经冷轧和退火处理后的显微组织和力学性能,结果表明,该薄带的断裂总伸长率达21.5%(相当于传统工艺的91.5%),抗拉强度达875MPa(相当于传统工艺的89.3%);拉伸变形后约有5%的亚稳态奥氏体转变为板条马氏体,且内部存在大量位错,有效提高了钢的加工硬化能力。Microstructure and properties of twin-roll strip casting high manganese TRIP（15Mn-3Si-3Al mass%）steel after cold rolling and annealing treatment were investigated.Result reveals that its elongation can be reached 21.5%（91.5%δof traditional technology）,and the tensile strength can be reached 875MPa （89.3%σ_b of traditional technology）.Moreover,about five percent metastable austenite change to martenite after tensile strain,large quantity dislocations was occureed in martensite lath by transmission electron microscopy, X-ray diffraction and scanning electron microscopy.

关 键 词：双辊铸轧 高锰钢 TRIP效应 亚稳奥氏体 马氏体 位错 

分 类 号：TG331[金属学及工艺—金属压力加工]