李德君,郭大山,巨亚峰,梁万银,张雄涛,任凤章

• 1:中国石油集团石油管工程技术研究院
• 2:石油管材及装备材料服役行为与结构安全国家重点实验室
• 3:河南科技大学材料科学与工程学院
• 4:中国石油长庆油田分公司油气工艺研究院

摘要(Abstract)：

将规格?194 mm×12 mm 20G钢管材在室温下进行约15%的内径膨胀变形,并研究其力学性能及在国内不同地区3种油田采出水模拟液中腐蚀性能的变化。结果表明:20G钢膨胀变形后铁素体晶粒内形成位错壁,抗拉强度和硬度分别增加了27%和26%,断后伸长率和冲击吸收能量分别降低了59%和87%。在3种油田采出水模拟液中,膨胀变形后,20G钢的腐蚀电位减小,腐蚀电流密度增加,电荷传递电阻R_(ct)值减小,腐蚀速率增加。

关键词(KeyWords)： 20G钢;膨胀变形;腐蚀性能;力学性能;位错密度

Abstract:

Keywords:

基金项目(Foundation): 中国石油天然气集团公司基础研究与战略储备技术研究(2018Z-03);; 中石油股份公司科技开发项目(2017F-19)

作者(Author): 李德君,郭大山,巨亚峰,梁万银,张雄涛,任凤章

DOI: 10.13289/j.issn.1009-6264.2020-0498

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