黄军波,何毅,赵美兰

• 1:天津职业技术师范大学汽车模具智能制造技术国家地方联合工程实验室
• 2:天津重型装备工程研究有限公司

摘要(Abstract)：

采用光学显微镜和力学性能测试等研究了淬火冷速对大型核电压力容器用SA508-3钢显微组织及力学性能的影响,尤其对落锤冲击性能的影响。结果表明:随着冷速的增加,SA508-3钢的显微组织由宽大的上贝氏体+粒状贝氏体组织向细小下贝氏体+马氏体组织转变。淬火冷速对SA508-3钢的常/高温强度影响不大,而对冲击韧性的影响显著,尤其对零塑性转变温度(NDTT)的影响显著。低冷速下的NDTT只能达到≥-13.3℃,而高冷速下的NDTT大幅度降低,达到≤-48.3℃。

关键词(KeyWords)： SA508-3钢;淬火冷速;显微组织;落锤性能;零塑性转变温度

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 黄军波,何毅,赵美兰

DOI: 10.13289/j.issn.1009-6264.2019-0435

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