TB2钛合金热压缩变形流变应力  

Flow Stress Behavior of TB2 Titanium Alloy during Hot Compression

作　　者：汪发春[1] 沈健[1] 赵云豪[1] 

机构地区：[1]北京有色金属研究总院有色金属加工工程研究中心,北京100088

出　　处：《稀有金属》2007年第6期732-736,共5页Chinese Journal of Rare Metals

摘　　要：在Gleeble-1500D热/力模拟试验机上,采用高温等温压缩试验,对TB2钛合金在高温压缩变形中流变应力行为进行了研究;应变速率为0.01-10 s^-1,变形温度为600-1200℃。结果表明：应变速率和变形温度的变化显著地影响合金流变应力的大小,流变应力随变形温度的升高而降低,随应变速率的提高而增大;可用Zener-Hollomon参数的双曲正弦函数形式来描述合金的流变应力行为。The flow stress behavior of TB2 titanium alloy during hot compression was studied in the temperature range of 600～1200 ℃ and at a strain rate of 0.01～10 s1 on Gleeble-1500D thermal/mechanical simulator.The results showed that the flow stress was controlled by both strain rate and deforming temperature.The flow stress decreased with the increase of deforming temperature,while increased with the increase of strain rate.The flow stress of TB2 titanium alloy during compression at elevated temperatures could be represented by a Zener-Hollomon parameter in a hyperbolic-sine relationship.

关 键 词：TB2钛合金 热压缩变形 ZENER-HOLLOMON参数 流变应力 应变速率 

分 类 号：TG111.7[金属学及工艺—物理冶金]