含铝TRIP钢热处理工艺优化  

Heat treatment process optimization of Al containing TRIP steel

作　　者：阎晓倩 刘胜[2] 董华利 王振强 杨帅 刘懿乐 

机构地区：[1]中铁物总技术有限公司,北京100036 [2]北京动力机械研究所,北京100074

出　　处：《金属热处理》2016年第3期84-87,共4页Heat Treatment of Metals

摘　　要：通过组织观察及力学性能测试,采用正交试验方法对无硅高铝的相变诱导塑性(TRIP)钢的热处理工艺进行了优化。结果表明,热处理工艺对TRIP钢组织性能的影响因素由大到小依次为等温温度>加热温度>等温时间。最优热处理工艺为:790℃加热+430℃×540 s等温处理,通过优化热处理工艺可使其抗拉强度达到620 MPa,伸长率达到32%,强塑积达到20 GPa·%。Heat treatment parameters of the Al containing TRIP steel were optimized by means of microstructure observation,mechanical properties test and orthogonal test. The results show that the influence of heat treatment parameters on TRIP steel decrease in the order of isothermal temperature 〉heating temperature 〉isothermal time. The optimal parameter is that 790 ℃ heating temperature,430 ℃ isothemal temperature and 540 s isothermal time. By optimizing annealing parameters,Al containing TRIP steel can obtain excellent mechanical properties and its tensile stress is 620 MPa,elongation is 32% and product of strength and elongation is 20 GPa·%.

关 键 词：含铝TRIP钢 退火 等温处理 性能 

分 类 号：TG156[金属学及工艺—热处理]