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研究开发出了一种钢材组织细化的新方法，即奥氏体－铁素体区循环形变，并采用自行设计的热模拟试样，研究了奥氏体－铁素体区循环形变对Ｑ２３５钢力学性能的影响规律．结果表明：在大部分变形条件下，采用该方法所得到的Ｑ２３５钢的杭拉强度大于５００ＭＰａ，屈服强度大于４００ＭＰａ，伸长率大于２０％，
A new method of refining the microstructure of steel has been developed, that is, the cyclic deformation of austenite-ferrite zone. The thermal simulated samples designed by ourselves were used to study the effect of cyclic deformation of austenite-ferrite zone on Q235 Influence of Mechanical Properties of Steel. The results show that under most of the deformation conditions, the Q235 steel obtained by the method has a greater Hangzhou tensile strength than 500 MPa, a yield strength greater than 400 MPa and an elongation greater than 20%