王悦,杨昊,宋洁,王平

• 1:东北大学材料电磁过程研究教育部重点实验室

摘要(Abstract)：

采用氧化物冶金新工艺通过30 kg真空感应炉冶炼含Ti、V、Cr等微合金元素的抗SSC高强试验钢,对比不同离线淬火和回火温度条件下的力学性能和组织形态,研究分析不同调质工艺对试验钢力学性能及抗SSC性能的影响。结果表明:随着淬火温度降低,试验钢的强度整体提高,且晶粒组织细化显著;经过700℃以上高温回火后,抗拉强度≥930 MPa、屈服强度≥862 MPa,屈强比≤85%,伸长率≥10%,横向-40℃低温冲击功≥30 J,各项力学性能满足125 ksi级耐油管API-5CT标准要求;通过微观组织观察发现,试验钢在700℃以上高温回火过程中析出了有利于提高抗SSC性能的纳米级球形碳化物M3C和MC。

关键词(KeyWords)： 抗硫化氢应力腐蚀;淬火;回火;析出物;屈服强度

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51174058)

作者(Author): 王悦,杨昊,宋洁,王平

DOI: 10.13289/j.issn.1009-6264.2017-0086

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