纯铁中间层对热轧不锈钢复合板性能的影响  

Effect of pure iron interlayer on mechanical properties of hot rolled stainless steel clad plate

作　　者：赵云鹏[1] 余超[1] 肖宏[1] 吴宗河 许朋朋 谢红飙[1] ZHAO Yun-peng;YU Chao;XIAO Hong;WU Zong-he;XU Peng-peng;XIE Hong-biao(National Engineering Research Center for Equipment and Technology of Cold Strip Rolling,Yanshan University,Qinhuangdao,Hebei 066004,China)

机构地区：[1]燕山大学国家冷轧板带装备及工艺工程研究中心,河北秦皇岛066004

出　　处：《钢铁》2020年第5期73-79,共7页Iron and Steel

基　　金：国家自然科学基金资助项目(51474190);河北省自然科学基金资助项目(E2019203466)。

摘　　要：为了减少不锈钢和碳钢热轧复合时结合界面形成脆性化合物,提高复合板的力学性能,在轧制温度为1000、1100及1200℃,压下量约为70%的条件下,进行了添加不同厚度纯铁中间层的真空热轧复合试验。通过光学显微镜、SEM观察以及拉伸试验等,研究了纯铁中间层对复合板界面微观组织和拉伸性能的影响。结果表明,当加入不同厚度纯铁中间层时,同温度下不锈钢/碳钢复合板拉伸性能都有不同程度的提高。并且在小于70%压下量下,2mm厚度的纯铁中间层可以完全阻止碳钢中的碳元素向不锈钢侧扩散,避免了碳铬化合物的形成,使结合界面的组织得到改善,力学性能得到提高。In order to reduce the formation of brittle compounds at the bonding interface of stainless steel and carbon steel during hot rolling,and improve the mechanical properties of the composite plates,the vacuum hot rolling composite experiment with different thickness of pure iron interlayer was carried out under the conditions of rolling temperature of 1000,1100,1200℃and reduction of about 70%.The effect of pure iron interlayer on the interfacial microstructure and tensile properties of composite plate was studied by optical microscopy,SEM observation and tensile test.The results show that the tensile properties of stainless steel/carbon steel composite plates are improved to varying degrees at the same temperature when different thickness of pure iron interlayer was added.And under less than 70%reduction,2 mm thick pure iron interlayer can completely prevent the carbon element in carbon steel from diffusing to stainless steel side,avoid the formation of carbochromium compounds,so as to improve the microstructure of the bonding interface and mechanical properties.

关 键 词：不锈钢复合板 热轧复合 纯铁中间层 力学性能 

分 类 号：TG335.11[金属学及工艺—金属压力加工] TG142.71[一般工业技术—材料科学与工程]