应变速率及环境介质对Zn-Cu-Ti合金应力腐蚀行为的影响  

Effects of Strain Rate and Environment Medium on Stress Corrosion Cracking of Zn-Cu-Ti Alloy

作　　者：王彦红[1] 肖来荣[1] 耿占吉[1] 饶博[1] 康思清[1] 

机构地区：[1]中南大学材料科学与工程学院,长沙410083

出　　处：《腐蚀与防护》2013年第5期410-412,416,共4页Corrosion & Protection

摘　　要：采用慢应变速率拉伸试验(SSRT)、扫描电镜(SEM)等方法研究了挤压态Zn-1.0Cu-0.2Ti(wt%)合金在空气、自来水及3.5%NaCl溶液中的应力腐蚀开裂(SCC)行为及应变速率对合金SCC行为的影响。结果表明,应变速率为1×10-6s-1时,合金的SCC敏感性最大;在1×10-6s-1的应变速率下,合金在自来水与3.5%NaCl溶液中的SCC敏感性比空气中弱。The stress corrosion cracking （SCC） behaviors of extruded Zn-1. 0Cu-0. 2Ti （wt%）alloy in air, piped water and 3. 5 % NaC1 were investigated by slow strain rate test （SSRT）method and scanning electron microscopy （SEM）, the e{fect of slow strain rate on SCC susceptibility was studied. The results show that the SCC susceptibility of Zn-Cu-Ti alloy was the most serious at 1 ×10-6s-1. The SCC susceptibility was less serious in piped water and 3. 5% NaCl solution compared with that in air at the strain rate of 1 ×10-6s-1.

关 键 词：Zn-Cu-Ti合金 慢应变速率拉伸试验(SSRT) 应力腐蚀开裂(scc) 

分 类 号：TG174[金属学及工艺—金属表面处理]