本文按 ASTMG 48—76标准推荐的10%FeCl_3溶液完全浸入法研究了 Ti 稳定的/8—8不锈钢在55℃—300℃范围内热处理的点蚀性能,提出了点蚀的敏感温度区间;研究了冷一变形及其蚀后的时效处理对点蚀性能的影响,观察了点蚀的形貌并指出了点...本文按 ASTMG 48—76标准推荐的10%FeCl_3溶液完全浸入法研究了 Ti 稳定的/8—8不锈钢在55℃—300℃范围内热处理的点蚀性能,提出了点蚀的敏感温度区间;研究了冷一变形及其蚀后的时效处理对点蚀性能的影响,观察了点蚀的形貌并指出了点蚀起源.从而提出了改善这材料抗点蚀性能的加工热处理途径.展开更多
The microstructure of welded joint is surveyed and the mechanical properties of X65 pipeline steel are studied in this paper, which provides experimental basis of performance effect on stress corrosion. H 2S stress co...The microstructure of welded joint is surveyed and the mechanical properties of X65 pipeline steel are studied in this paper, which provides experimental basis of performance effect on stress corrosion. H 2S stress corrosion cracking (SCC) tests on the steel are carried out in the environment based on NACE TM- 01-77 solution. The threshold stress intensity factor and crack propagation velocity for base metal and HAZ are obtained. The susceptibility of welded joint for X65 pipeline steel to H 2S stress corrosion cracking is investigated. The programming package ANSYS of finite element model (FEM) is used to perform the three-dimensional elastic-plastic finite element analysis of WOL specimens. Stress field and concentration of hydrogen distribution property of the crack tip are obtained.展开更多
文摘本文按 ASTMG 48—76标准推荐的10%FeCl_3溶液完全浸入法研究了 Ti 稳定的/8—8不锈钢在55℃—300℃范围内热处理的点蚀性能,提出了点蚀的敏感温度区间;研究了冷一变形及其蚀后的时效处理对点蚀性能的影响,观察了点蚀的形貌并指出了点蚀起源.从而提出了改善这材料抗点蚀性能的加工热处理途径.
文摘The microstructure of welded joint is surveyed and the mechanical properties of X65 pipeline steel are studied in this paper, which provides experimental basis of performance effect on stress corrosion. H 2S stress corrosion cracking (SCC) tests on the steel are carried out in the environment based on NACE TM- 01-77 solution. The threshold stress intensity factor and crack propagation velocity for base metal and HAZ are obtained. The susceptibility of welded joint for X65 pipeline steel to H 2S stress corrosion cracking is investigated. The programming package ANSYS of finite element model (FEM) is used to perform the three-dimensional elastic-plastic finite element analysis of WOL specimens. Stress field and concentration of hydrogen distribution property of the crack tip are obtained.
