连接温度对TA2钛板瞬时液相扩散连接接头组织和性能的影响
Effects of Bonding Temperature on Microstructure and Properties of TA2 Transient Liquid Phase Bonded Titanium Plate Joints
摘 要
利用铜镍锡磷系非晶合金箔作为中间层, 使用氩气保护, 在不同的连接温度采用瞬时液相扩散焊对TA2钛板进行了连接, 并通过光学显微镜、显微硬度仪和材料试验机研究了连接温度对接头组织、显微硬度和剪切强度的影响。结果表明: 连接温度低于840 ℃时, 液态中间层等温凝固没有完成, 能观察到残留的中间层; 随着连接温度的升高, 原子扩散加快, 残留中间层逐渐减少; 870 ℃时, 连接接头组织全部为固溶体; 连接温度为850 ℃时, 连接接头具有最高的剪切强度, 约为180 MPa。
瞬时液相扩散焊
连接温度
显微组织
剪切强度
TA2 titanium plate
transient liquid phase bonding
bonding temperature
microstructure
shear strength
Abstract
Titanium TA2 plates were joined by transient liquid phase bonding at different bonding temperatures in argon atmosphere, using Cu-Ni-Sn-P amorphous foils as interlayer. Influence of bonding temperature on the microstructure, micro-hardness and shear strength of the joints were investigated by an optical microscope, a micro-hardness tester and a material tester. The results show that the isothermal solidification of the liquid interlayer did not complete at the bonding temperature lower than 840 ℃, and the remaining interlayer could be observed. Atomic diffusion speeded up and the remaining interlayer reduced gradually with the increase of bonding temperature; the microstructure of the joints were all solid solution at 870 ℃. The joints had the highest shear strength around 180 MPa when the bonding temperature was 850 ℃.
中图分类号 TG456.9
所属栏目 试验研究
基金项目 河南省科技攻关项目(142102210434)
收稿日期 2014/6/23
修改稿日期 2015/2/12
网络出版日期
作者单位点击查看
备注朱春莉(1990-), 女, 河南周口人, 硕士研究生。
引用该论文: ZHU Chun-li,CHEN Si-jie. Effects of Bonding Temperature on Microstructure and Properties of TA2 Transient Liquid Phase Bonded Titanium Plate Joints[J]. Materials for mechancial engineering, 2015, 39(4): 19～22
朱春莉,陈思杰. 连接温度对TA2钛板瞬时液相扩散连接接头组织和性能的影响[J]. 机械工程材料, 2015, 39(4): 19～22
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