系泊链用10CrNi5MoV钢的力学及耐腐蚀性能  

Mechanical properties and corrosion resistance of 10CrNi5MoV steel for mooring chain

作　　者：王鑫 李昭东[2] 周世同[1,2] 左越[3] 黄涛[2] 陈颖[2] 代建清[1] 

机构地区：[1]昆明理工大学材料科学与工程学院,云南昆明650093 [2]钢铁研究总院工程用钢所,北京100081 [3]钢铁研究总院焊接所,北京100081

出　　处：《金属热处理》2018年第2期51-56,共6页Heat Treatment of Metals

基　　金：国家高技术研究发展计划(863计划)(2015AA03A502);国家重点基础研究发展计划(973计划)(2015CB654803)

摘　　要：通过静态全浸腐蚀试验研究了人工海水条件下10CrNi5MoV钢的耐腐蚀性能并与传统R3级钢进行了对比,通过慢应变速率拉伸试验对比研究了系泊链用10CrNi5MoV钢在不同回火温度热处理后的应力腐蚀断裂敏感性。结果表明：10CrNi5MoV钢在640~660℃回火热处理具有低的应力腐蚀断裂敏感性,且常规力学性能较好;随回火温度进一步升高,组织中出现大量的MA（马氏体-奥氏体）岛,断口的韧窝由等轴韧窝变为剪切韧窝,应力腐蚀断裂敏感性较高。10CrNi5MoV钢常规力学性能以及在人工海水中的耐蚀性都优于R3级钢。The corrosion resistance of 10CrNi5MoV steel under the condition of artificial seawater was studied by static full immersioncorrosion test and compared with the traditional R3 steel, and the stress corrosion cracking sensitivity of 10CrNiSMoV steel used in mooringchain after tempering treatment at different temperatures is studied by slow strain rate tensile test. The results show that 10CrNi5MoV steeltempered at 640-660 ℃ has low stress corrosion cracking sensitivity, and the conventional mechanical properties are better. With furtherincreasing of tempering temperature, a large number of MA （ martensite austenite） islands appear in the microstructure, and the fracturedimples change from equiaxial to shear dimples, and the alloy becomes more sensitive to the stress corrosion cracking. The conventionalmechanical properties and corrosion resistance in artificial sea water of 10CrNi5MoV steel are better than that of grade R3 steel.

关 键 词：系泊链 10CrNi5MoV钢 R3级钢 力学性能 耐腐蚀性 

分 类 号：TG172.5[金属学及工艺—金属表面处理]