周成,赵坦,朱隆浩,金耀辉,李家安,严玲,张鹏,王晓航

• 1:海洋装备用金属材料及其应用国家重点实验室
• 2:鞍钢集团钢铁研究院

摘要(Abstract)：

研究了不同淬火温度对620 MPa超高强海洋工程用钢显微组织和力学性能的影响。结果表明:实验钢经两相区淬火+回火处理后的组织为板条状铁素体和回火索氏体,其强度较低,低温韧性较高,当使前驱体调整为马氏体时,导致铁素体板条束尺寸缩短和增宽,最终实验钢强度下降,低温冲击韧性变化不明显;实验钢经完全奥氏体相区淬火+回火处理后的组织为回火索氏体,其强度较高,低温冲击韧性较低,当调整前驱体为马氏体后,最终形成了更加细小均匀的回火索氏体组织,此时其强度变化不明显,但低温冲击韧性得到较大提升。

关键词(KeyWords)： 淬火和回火;显微组织;力学性能;海洋工程用钢

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 周成,赵坦,朱隆浩,金耀辉,李家安,严玲,张鹏,王晓航

DOI: 10.13289/j.issn.1009-6264.2018-0368

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