研究热轧压下率对Q235A碳钢与304不锈钢复合板中碳钢组织的影响。结果表明:珠光体数量随压下率增加而增多,分布更加均匀,先共析铁素体随压下率先增加后减小。轧制形变试样产生内应力促进奥氏体的共析转变;碳原子从被压碎的晶粒内部向外部扩散,导致珠光体增加、先共析铁素体减少。轧制后晶粒细化及析出均匀的碳化物使材料抗拉强度提高。 The effect of hot rolling reduction on the microstructure of Q235A carbon steel and 304 stainless steel clad plate was investigated. The results show that the amount of pearlite increases with decreasing reduction rate, and the distribution is more uniform. The first proeutectoid ferrite increases first and then decreases with decreasing pressure. Internal stress generated by the rolling deformation of the sample promotes the eutectoid transformation of austenite; carbon atoms diffuse from the inside to the outside of the crushed grains, resulting in an increase in pearlite and a decrease in proeutectoid ferrite. After rolling grain refinement and precipitation of carbide carbide materials to improve the tensile strength.