压力容器2012，Vol.29Issue(9)：1-6,6.DOI:10.3969/j.issn.1001-4837.2012.09.001
34CrMo4钢在湿H2S环境下的应力腐蚀试验研究
Experimental Research of Stress Corrosion for 34CrMo4 Steel in Wet H2S Environment
摘要
Abstract
Stress corrosion cracking properties of 34CrMo4 high - strength steels, the material of compressed natural gas vessels in vehicle,were studied. In wet H2S environment,tension tests of compact tension (CT) specimens of 34CrMo4 steel were carried out at the displacement rate of 5 x 10-5mm/s. The critical stress intensity factor and crack growth rate were gotten in different concentrations of hydrogen sul-fide solution (20,63 ,200,630 and 2000 ppm) . The results show that KISCC decreases with increase of the concentrations of hydrogen sulfide, but the influence of the concentration on KISCC changes very little when hydrogen sulfide concentration reaches a certain value; da/dt increases with the increase of the concentrations of hydrogen sulfide, then while the influence of the concentration on crack growth rate is very little from 630 to 2000 ppm.关键词
紧凑拉伸(CT)试样/位移速率/硫化氢/应力腐蚀Key words
compact tension (CT) specimens/ displacement rate/ hydrogen sulfide/ stress corrosion分类
机械制造引用本文复制引用
黄旭,张玮,高增梁..34CrMo4钢在湿H2S环境下的应力腐蚀试验研究[J].压力容器,2012,29(9):1-6,6.基金项目
国家“863”高技术研究发展计划项目(2009AA044802) （2009AA044802）
