胡海洋,刘徐源,王爽,颜秉宇,孙殿东,王永才

• 1:鞍钢集团海洋装备用金属材料及其应用国家重点实验室
• 2:鞍钢股份有限公司

摘要(Abstract)：

利用光学显微镜(OM)、透射电镜(TEM)等实验方法,研究了回火工艺对150 mm厚的核电站用16MND5钢板组织和力学性能的影响。结果表明:在640℃回火时,随保温时间的延长强度呈下降趋势,伸长率和0℃冲击功均是先升高后降低。当保温时间为225 min时,随回火温度的升高,强度降低,伸长率变化不大,冲击功略有提高。分析认为:贝氏体和马氏体的复相组织向平衡组织的转变会导致试验钢板整体强度呈下降趋势,铁素体含量的增加是伸长率和冲击功提高的主要原因,而合金渗碳体的聚集长大则造成冲击功降低。

关键词(KeyWords)： 核电用钢;16MND5;保温时间;回火温度;合金渗碳体

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 胡海洋,刘徐源,王爽,颜秉宇,孙殿东,王永才

DOI: 10.13289/j.issn.1009-6264.2017-0196

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