【摘要】 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％，更多还原

【Abstract】 A new way to fine steel structure has been developed. It is the austenite-ferrite-repeating deformation. The effect of austenite - ferrite - repeating deformation on the mechanical properties of steel Q235 has been investigated by introducing a thermal simulation sample which has been worked out by ourselves. The results of the study indicate that the mechanical properties of steel Q235 are enhanced by this new method.更多还原