Abstract：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 1 000,1 100,1 200 ℃ 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.
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2020, Vol. 55 
