Fe_3Al 合金的高温变形行为  

Deformation Behavior of Fe 3Al Alloy at Elevated Temperature

作　　者：张喜马[1] 林栋梁 刘俊亮 王晓 陈家光[2] 曹涵清[2] 胡凡[2] 王聪[2] 

机构地区：[1]上海交通大学国家教委高温材料及高温测试开放实验室 [2]宝山钢铁总厂钢铁研究所

出　　处：《上海交通大学学报》1998年第2期49-52,共4页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金

摘　　要：用载荷松弛法对Ｆｅ－２８Ａｌ－２Ｔｉ合金在较高温度下的变形行为进行了研究．测定了Ｆｅ－２８Ａｌ－２Ｔｉ合金在高温变形时的载荷松弛曲线、应力减小因子Ｙ及激活能值，并对试样进行了显微结构观察．结果表明，Ｆｅ－２８Ａｌ－２Ｔｉ合金的高温变形是一个亚晶界吸收位错，而且不断向大角晶界转变的过程．The deformation behavior of Fe 28Al 2Ti alloy at elevated temperature is investigated mainly using a load relaxation method. The load relaxation curve in Fe 28Al 2Ti at elevated temperature is obtained. The stress reduction factor Y and the flow activation energy are determined. And the microstructure is observed by TEM. The results show that the deformation process at elevated temperature is a process in which subgrain boundaries absorb dislocation and change their misorientation continuously.

关 键 词：金属间化合物 载荷松弛 FE3AL合金 变形 

分 类 号：TG132[一般工业技术—材料科学与工程]