耐高温复合材料的电子束熔炼制备工艺研究  

Fabricating Technology on Composite Material with High Temperature Resistance by Electron Beam Melting

作　　者：杨尚磊[1] 薛小怀[1] 楼松年[1] 李仕民[2] 

机构地区：[1]上海交通大学焊接研究所,上海200030 [2]上海航天技术研究院801所,上海200233

出　　处：《表面技术》2005年第3期43-45,共3页Surface Technology

摘　　要：　为了提高钛合金表面的耐高温性能,研究新型的耐高温功能梯度材料,基于电子束高能量密度和难熔金属钼具有高熔点的特点,开发了电子束熔炼制备涂层材料的新技术,通过应用钛钼混合金属粉末在钛合金基体上制备了耐高温复合层。试验结果表明:电子束熔炼扫描轨迹和熔炼参数可以实时精确控制,并且实现了钛合金耐高温复合层的制备。混合金属粉末中钼含量越高,粉末堆敷厚度越大,熔炼束流越大。To improve high temperature resistance of Ti alloy and develop new functionally graded material with high temperature resistance,new fabricating technology of electron beam melting was introduced to coating material based on high energy density of electron beam and high melting point of refractory metal Mo. High temperature resistance multilayer of titanium alloy was fabricated by using mixed powder of Ti and Mo. Results show that electron beam scanning track and melting parameters are real time accurately controled. Composite layer with high temperature resistant of Ti alloy is fabricated. The beam current increases with the increasing of Mo. content in mixed powder and thickness of powder stack.

关 键 词：熔炼 电子束 复合材料 耐高温材料 

分 类 号：TG456.3[金属学及工艺—焊接]