[1]邵紫艳 编译.X100管线钢环境致裂敏感性评估[J].焊管,2013,36(11):71-74.[doi:１００１－３９３８（２０１3）11-0071-04]
　Edited and Translated by SHAO Ziyan.Evaluation of Environment-assisted Cracking Susceptibility of a Grade X100 Pipeline Steel[J].,2013,36(11):71-74.[doi:１００１－３９３８（２０１3）11-0071-04]
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X100管线钢环境致裂敏感性评估
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
36
期数:
2013年第11期
页码:
71-74
栏目:
国外焊管
出版日期:
2013-11-28

文章信息/Info

Title:
Evaluation of Environment-assisted Cracking Susceptibility
of a Grade X100 Pipeline Steel
文章编号:
１００１－３９３８（２０１3）11-0071-04
作者:
邵紫艳 编译
（宝鸡石油钢管有限责任公司，陕西 宝鸡 721008）
Author(s):
Edited and Translated by SHAO Ziyan
（Baoji Petroleum Steel Pipe Co., Ltd., Baoji 721008, Shaanxi, China）
关键词:
管线钢; 低合金钢; 恒电位; 应变效果; 应力腐蚀; 氢脆
Keywords:
pipeline steel;  low alloy steel;  constant potentials;  strain effect;  stress corrosion;  hydrogen embrittlement
分类号:
TE973
DOI:
１００１－３９３８（２０１3）11-0071-04
文献标志码:
B
摘要:
对X100管线钢母材及模拟焊缝热影响区（HAZ）的显微组织环境致裂（EAC）敏感性进行了研究分析，在75 ℃温度下的1%NaHCO3+0.5%NaCO3溶液中进行慢应变速率试验，试验电位为－500～－1 100 mV，对比得到X100管线钢与模拟焊缝热影响区显微组织的敏感性。结果表明，热处理影响管线钢对环境致裂的抵抗力。阳极电位的应力腐蚀开裂是晶间开裂，当靠近－890 mV的自然腐蚀电位时变为穿晶开裂。晶间应力腐蚀开裂比穿晶应力腐蚀开裂发生的电位偏向阳极，阴极电位穿晶氢脆的增长率高达1.4×10-5 mm/s，二次开裂较少。
Abstract:
Susceptibility of as-received grade X100 steel was compared to that of simulated and seam-weld heat-affected zone microstructures by slow strain rate testing in a sodium hydrogen carbonate-sodium carbonate solution at 75℃ over a potential range of －500 to －1 110 mV vs. standard calomel electrode(sce). Heat treatment has an effect on the resistance of the steel to environment-assisted cracking. Stress corrosion cracking at anodic potentials was intergranular(IG)and became transgranular(TG) as the free corrosion potential of －890 mV(sce) was approached. At cathodic potentials, transgranular hydrogen embrittlement occurred with faster growth rates up to 1.4×10-5 mm/s and less secondary cracking.

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备注/Memo

备注/Memo:
译收稿日期：2013-06-05
者简介：邵紫艳（1974—），女，工程师，现主要从事长输天然气管道大型机械、工艺设备采办工作。
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