杨晓萱,孙文伟,赵亚军,孙令仪,王均亚,毛向阳

• 1:南京工程学院材料科学与工程学院
• 2:江苏标新工业有限公司
• 3:江苏省先进结构材料与应用技术重点实验室

摘要(Abstract)：

采用光学显微镜、电子万能试验机和晶间腐蚀试验等研究了终锻温度对核电用316L奥氏体不锈钢显微组织、力学性能及耐晶间腐蚀性能的影响。结果表明:当始锻温度为940℃,终锻温度为830℃时,试验钢的晶粒度为4.5～5级,比终锻温度860℃和890℃的样品分别高0.5级和1级。终锻温度为830℃的样品在室温下抗拉强度达到574 MPa, 360℃高温下抗拉强度为446 MPa,室温下冲击吸收能量达到388 J。随着终锻温度的降低,试验钢的抗拉强度、屈服强度及冲击吸收能量升高,室温及高温伸长率变化不显著。终锻温度在830～890℃范围内,试验钢的耐晶间腐蚀性能良好,终锻温度为860℃的试验钢耐晶间腐蚀性能最佳,再活化率最小。

关键词(KeyWords)： 奥氏体不锈钢;显微组织;锻造温度;耐晶间腐蚀

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 杨晓萱,孙文伟,赵亚军,孙令仪,王均亚,毛向阳

DOI: 10.13289/j.issn.1009-6264.2020-0372

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