摘要
采用电化学方法研究了不同热处理条件(沉积态,时效态,时效水冷态)下3D打印钛合金在1mol/L盐酸溶液中的耐蚀性,同时观察了合金的显微组织。结果表明:3D打印钛合金为细小的针状α+β网篮组织;时效处理后,α相析出且粗化,耐蚀性减弱;水冷处理后,组织转变为特殊的α+β网篮组织,由粗大的片层α相和细小针状α相组成,耐蚀性进一步减弱。在1mol/L盐酸溶液中,沉积态合金的耐蚀性最强,时效态合金的耐蚀性次之,时效水冷态合金的耐蚀性最差。
Electrochemical method was used to study the corrosion resistance of 3 Dprinted titanium alloy in 1 mol/L hydrochloric acid solution under different heat treatment conditions,and the microstructure of the alloy was also observed.The results show that the structure of the 3 Dprinted titanium alloy was a fine needle-likeα+βnet basket structure;after aging treatment,αphase precipitated and coarsened,and the corrosion resistance was weakened;after water cooling treatment,the structure of the alloy was transformed into a specialα+βnet structure,which was composed of coarse lamellarαphase and fine needle-shapedαphase,and the corrosion resistance was further weakened.In the 1 mol/L hydrochloric acid solution,the corrosion resistance of as-deposited alloy was the strongest,the corrosion resistance of ageing alloy was the second,and the corrosion resistance of ageing water-cooled alloy was the worst.
作者
尚进
曹玮
陈永畅
SHANG Jin;CAO Wei;CHEN Yongchang(AECC Commerical Aircraft Engine Manufacturing Co..Ltd.,Shanghai 201306,China)
出处
《腐蚀与防护》
CAS
北大核心
2020年第5期27-29,62,共4页
Corrosion & Protection
关键词
耐蚀性
3D打印
钛合金
热处理
corrosion resistance
3D printing
titanium alloy
heat treatment
作者简介
通信作者:尚进(1990-).工程师.从事航空发动机材料性能测试及失效分析.17301651391.13682130962@163.com。
