王航,韩礼红,胡锋,冯耀荣,孙军

• 1:中国石油集团石油管工程技术研究院
• 2:西安交通大学金属材料强度国家重点实验室

摘要(Abstract)：

通过光学显微镜(OM)、透射电镜(TEM)观察及硬度、拉伸性能测试,研究了抗硫钻杆钢中析出相的析出行为。结果表明:抗硫钻杆钢中析出相的形貌及结构尺寸具有多重特征,表现出对回火温度的依赖性。580℃回火温度下,铁素体基体上析出微米量级的棒状及纳米量级的球形析出相,抗硫钻杆钢强度因而较高。回火温度升高到625℃,析出相形貌逐渐向球形演变,并且其体积分数增加,抗硫钻杆钢强度、塑性同时提高,强度达到150 ksi钢级,表现出良好的强度/韧性匹配。回火温度680℃下,析出相沿晶界析出并逐渐聚集,导致抗硫钻杆钢强度急剧降低。抗硫钻杆钢的强/韧性匹配依赖于析出相—位错交互作用和析出相—基体变形协调两种机制的相互竞争。

关键词(KeyWords)： 抗硫钻杆;析出相;强度;韧性

Abstract:

Keywords:

基金项目(Foundation): 中国石油天然气集团公司应用基础研究项目(06A40102)

作者(Author): 王航,韩礼红,胡锋,冯耀荣,孙军

DOI: 10.13289/j.issn.1009-6264.2012.03.019

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