钛合金在高含硫化氢工况中的腐蚀性能研究  

Study on Corrosion Properties of Titanium Alloy in Gathering Line with High Sulfur Content

作　　者：李冲[1,2] 陶欢 宋德军[1,2] 杨胜利 郁炎[1,2] LI Chong;TAO Huan;SONG Dejun;YANG Shengli;YU Yan(Luoyang Ship Material Research Institute,Luoyang 471023,China;National and Local Joint Engineering Research Center of Advanced Titanium and Titanium Alloy Materials Technology,Luoyang 471023,China)

机构地区：[1]中国船舶重工集团公司第七二五研究所,河南洛阳471023 [2]先进钛及钛合金材料技术国家地方联合工程研究中心,河南洛阳471023

出　　处：《材料开发与应用》2020年第6期19-23,共5页Development and Application of Materials

基　　金：河南省重大科技专项(151100210300)。

摘　　要：研究了3种不同强度等级的钛合金(TT42、TT52和TT70)在高硫化氢工况中耐点腐蚀试验、抗氢致开裂试验(HIC)、抗硫化物应力腐蚀开裂试验(SSC)、以及模拟工况条件下均匀腐蚀试验和抗硫化物应力腐蚀开裂试验(SSC).结果表明:3种钛合金材料均具有良好的抗点腐蚀性能、抗氢致开裂性能及抗硫化物应力腐蚀性能;在模拟高含硫工况条件下,3种钛合金材料均匀腐蚀试验表面均无点蚀,平均腐蚀速率分别为4×10^(-4) mm/a、2×10^(-4) mm/a和4×10^(-4) mm/a,几乎不发生腐蚀;在80%AYS加载应力下,3种钛合金材料表面均未发生开裂.Pitting corrosion resistance test,hydrogen induced cracking resistance test(HIC),sulfide stress corrosion cracking resistance test(SSC),and uniform corrosion test under high H_(2)S-containing gas field are carried out on three typical titanium alloys(TT42,TT52,TT70).Results show that the three titanium alloys all have good pitting corrosion resistance,hydrogen cracking resistance and sulfide stress corrosion resistance.Under the simulated conditions of high sulfur content,the surface of titanium alloy materials have no pitting corrosion,and the average corrosion rates are 4×10^(-4)mm/a、2×10^(-4)mm/a and 4×10^(-4)mm/a,respectively,with almost no corrosion.The surface of three kinds of titanium alloy don’t crack under the stress of 80%AYS.

关 键 词：钛合金 抗氢致开裂试验(HIC) 抗硫化物应力腐蚀开裂试验(SSC) 均匀腐蚀 

分 类 号：TG178.2[金属学及工艺—金属表面处理] TE988[金属学及工艺—金属学]