热处理制度对CPTi丝材组织性能的影响  

Effect of heat treatment on microstructure and properties of CPTi wire

作　　者：冯奇 文锐 乔琳 樊佳盟 Feng Qi;Wen Rui;Qiao Lin;Fan Jiameng(Baoji Yongsheng Titanium Industry Co.,Ltd.,Baoji 721000,Shaanxi,China;Xi'an Keen Titanium New Material Technology Co.,Ltd.,Xi'an 710089,Shaanxi,China)

机构地区：[1]宝鸡市永盛泰钛业有限公司,陕西宝鸡721000 [2]西安科恩钛新材料科技有限公司,陕西西安710089

出　　处：《特钢技术》2023年第2期39-42,共4页Special Steel Technology

摘　　要：本文对航空用CPTi棒丝材热处理制度对其组织性能的影响进行了研究。试验结果表明:冷变形量为22%是将强度指标控制在480 MPa以下的变形量控制点。CPTi丝材同一变形量下640℃及660℃的制度下试样的力学性能基本趋于稳定,因此经过一定的冷变形后的纯钛试样应选择在640~660℃下保温1小时后空冷的制度下进行热处理。要更大幅度的提高产品的塑性指标的途径是需进一步提高坯料的纯净度。The effect of heat treatment system on microstructure and properties of CPTi bar and wire for avia-tion was studied in this paper.The test results show that 22%cold deformation is the control point for the strength index to be controlled below 480MPa.The mechanical properties of CPTi wire samples tend to be basically stable at 640℃and 660℃with the same amount of deformation.Therefore,pure titanium samples after a certain cold deformation should be heat treated at 640~660℃for 1 hour and then air cooling.The way to improve the plastic index of the product is to further improve the purity of the billet.

关 键 词：冷变形 孪晶 热处理 纯净度 

分 类 号：TG166.5[金属学及工艺—热处理]