固溶冷却方式对Ti60钛合金大规格棒材组织和力学性能的影响  

作　　者：覃佳栋 屠孝斌 刘继雄[2] 陈秉刚[2] 李巍[2] 张平辉[2] 王鼎春[2] 王清江[3] 

机构地区：[1]中国航发西安航空发动机有限公司,陕西西安710021 [2]宝鸡钛业股份有限公司,陕西宝鸡721014 [3]中国科学院金属研究所,辽宁沈阳110016

出　　处：《科技创新与应用》2020年第6期120-122,共3页Technology Innovation and Application

摘　　要：文章研究了四种固溶冷却方式(空冷、风冷、油冷和水冷)对Ti60钛合金显微组织和室温、高温(600℃)力学性能的影响。结果表明:固溶冷却速度的增加,会使初生α尺寸变小,含量降低。空冷的室温拉伸强度为1009MPa,伸长率为13.5%;水冷的室温拉伸强度为1186MPa,伸长率为11%。固溶冷却速度的增加,室温和高温拉伸强度、热稳定强度和蠕变性能提高,但室温拉伸塑性和热稳定塑性会明显降低。这是由于不同固溶冷却速度下初生α和次生α大小及含量差异造成的。The effects of four solid solution cooling methods(air cooling,wind cooling,oil cooling and water cooling)on the microstructure and mechanical properties of Ti60 titanium alloy at room temperature and high temperature(600℃)were studied.The results show that the size and content of primary α decrease with the increase of solution cooling rate.The tensile strength at room temperature of air cooling is 1009 MPa,and the elongation is 13.5%;the tensile strength at room temperature of water cooling is 1186 MPa,and the elongation is 11%.With the increase of solution cooling rate,the tensile strength,thermal stability strength and creep properties at room and high temperature increase,but the tensile plasticity and thermal stability plasticity at room temperature decrease obviously.This is due to the difference in the size and content of primary and secondary α at different solution cooling rates.

关 键 词：TI60 固溶冷却方式 棒材 显微组织 高温力学性能 

分 类 号：TG166.5[金属学及工艺—热处理]