SPV490Q钢焊接接头在不同浓度硫化氢溶液中的应力腐蚀开裂行为

基金项目:

中国石油化工股份有限公司科技开发项目(306005)

详细信息

Stress Corrosion Cracking of SPV490Q Steel Weld Joints in H₂S Solution with Different Concentrations

摘要: 对SPV490Q钢焊接接头的楔形张开加载(WOL)预裂纹试样在不同浓度硫化氢溶液中进行了应力腐蚀试验,测定了焊缝的应力腐蚀临界应力强度因子KISCC和应力腐蚀裂纹扩展速率da/dt.结果表明:随着H2S浓度的升高,SPV490Q钢焊缝的应力腐蚀临界应力强度因子KISCC下降,应力腐蚀裂纹扩展速率da/dt增大,焊接接头的应力腐蚀抗力降低.
- SPV490Q钢焊接接头 /
- 临界应力强度因子 /
- 裂纹扩展速率
Abstract: The stress corrosion properties of SPV490Q weld joint in H2S solution with different concentrations were studied using WOL specimens.The crack propagation rate da/dt and critical stress corrosion factor KISCC of SPV490Q weld were gotten by experiments.The results show that with increasing concentration of H2S in solution the critical stress corrosion factor KISCC decreased,the stress corrosion crack propagation rate da/dt increased,and the resistance to stress corrosion cracking of SPV490Q steel weld joint in H2S solutions decreased.
- SPV490Q steel weld joint /
- critical stress corrosion factor /
- crack propagation rate

[1]	韩建宇,宣征南.高含硫原油储罐的腐蚀及防护[J].现代制造工程,2004(5):95-97.
[2]	王拙.断裂力学[M].哈尔滨:哈尔滨工业大学出版社,1989:287-288.
[3]	吴庆华.化工设备中应力腐蚀的机理及防护[J].化学工程师,2006(12):47-48.
[4]	曹振明,朱承飞,徐峰.原油储罐内壁腐蚀研究[J].石油工程建设,2006,32(2):41-43.
[5]	BERKOWITZ B J,HOROWITZ H H.The role of HS in the corrosion and hydrogen embrittlement of steel[J].Journal of Elvetrochiemical Society,1982,129(3):468-474.