正火温度对N08367/Q345R复合板组织和性能的影响  

Effects of Normalizing Temperature on Microstructure and Properties of N08367/Q345R Clad Plate

作　　者：靳淑静 顾丽 江姗 曾周燏 党军 李东晖 JIN Shujing;GU Li;JIANG Shan;ZENG Zhouyu;DANG Jun;LI Donghui(Research Institute,Nanjing Iron and Steel Co.,Ltd.,Nanjing 210035,China)

机构地区：[1]南京钢铁股份有限公司研究院,江苏南京210035

出　　处：《热加工工艺》2025年第4期77-81,共5页Hot Working Technology

基　　金：国家重点研发计划资助项目(2017YFB0305004)。

摘　　要：N08367/Q345R复合板兼具基层材料的高强度和覆层材料的高耐腐蚀性,是超级奥氏体不锈钢N08367纯材的经济性替代产品。为了开发出可正火态交货的N08367/Q345R复合板,研究了其分别在870、890、910、930和950℃正火后的组织和性能。结果表明,正火后基材的组织变细,但在930℃以上珠光体组织开始变粗。随正火温度的升高,覆材的晶间腐蚀速率逐渐下降,但在5个温度点均不会发生点蚀。复合板在890、910和930℃正火后的拉伸、冲击、弯曲、剪切性能均满足标准要求。为了获得最佳的综合性能,建议N08367/Q345R复合板的正火温度范围设置为910~930℃。N08367/Q345R clad plate combines the high strength of base metal and good corrosion resistance of cladding alloy,and is an economical alternative for super austenitic stainless steel N08367 purity.To develop normalized N08367/Q345R clad plate,its microstructure and properties were studied after normalizing at 870,890,910,930 and 950℃,respectively.The results indicate finer grain size after heat treatment,however,the pearlite is becoming coarser above 930℃.The intergranular corrosion rate of the cladding alloy decreases as the normalizing temperature increases,but no spot corrosion occurs at the 5 temperature points.The properties including tensile test,impact energy,bend test and shear strength can fully meet the standards.In order to obtain the best comprehensive performance,it is recommended to set the normalizing temperature range of N08367/Q345R clad plate to 910-930℃.

关 键 词：正火 N08367超级不锈钢 复合板 组织 性能 腐蚀 

分 类 号：TB331[一般工业技术—材料科学与工程] TG337.5[金属学及工艺—金属压力加工]