TC4合金相变温度检测中结果不一致原因分析  

On the Outcome Disparity in α+β/β Transus Temperature Testing of TC4 Alloy

作　　者：王涛[1] 白新房[1] 王松茂[1] 朱波[1] 夏金华[1] 

机构地区：[1]西北有色金属研究院材料分析中心,西安710016

出　　处：《西安文理学院学报（自然科学版）》2013年第3期80-83,共4页Journal of Xi’an University(Natural Science Edition)

摘　　要：金属材料的相变温度在日常检测中其检测结果易于出现波动,给生产造成不便.对取自两批料的TC4合金作相变温度检测时,发现所测得的相变温度相差15℃,试样整体化学成分含量并无较大差异.对样品不同部位进行扫描电镜能谱分析发现两样品微区Al、V元素含量差别较大,结合合金元素含量对相变温度的影响,通过计算法得出因微区元素含量差异造成相变温度差值为18.75℃,与金相法所测得的结果一致,肯定了元素分布不均匀是造成样品相变温度检测结果出现差异的原因.The metals＇ α ＋β/β transus temperature in routine testing features undulation, which often hindersproduction. This study gives α ＋β/β transus temperature testing of TC4 from two samples. The result shows a disparity of 15℃. The chemical composition contents do not show significant difference. EDS quantitative test of elements in differenct areas resulted in the significant variation in the amount of A1 and V. Calculation method shows that the tempera- ture disparity is 18.75℃ due to the contents difference in micro- areas. The result is consist- ent with that obtained from metallographic method. The uneven distribution of elements is proved to be the main cause for the variation in the transus temperature of the samples.

关 键 词：TC4 相变温度 化学成分 计算法 

分 类 号：TG113.12[金属学及工艺—物理冶金]