冷轧压下率对低碳钢半硬卷组织和性能的影响研究

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STUDYONTHEEFFECTOFCOLDROLLING REDUCTIONRATEONTHEMICROSTRUCTUREAND PROPERTIESOFLOWCARBONSTEEL SEMIHARD COIL

Zhou Hua Zhou Bowen Xie Guoqing （Guangxi Liuzhou Iron and Steel Group Co.， Ltd.Liuzhou545ooo， China）

Abstract：The effect ofcold roling reduction on the microstructure and properties oflow-carbon steel semi-rigid coils was studied.The research results indicate thatas the total reductionrateand secondarycold rolling reduction rate decrease，thedeformationstructure inthesteel graduallydecreases，the strengthdecreases，andtheelongation increases. Compared to the total reductionrate，the influenceof secondarycoldroling reductionrate is more significant.When the secondary cold rolling reduction rate is 10% ，asemi hard coil product with excellent strength and plasticity can be obtained.

Key words： semi hard roll;total compression rate; secondary cold rolling reduction rate; organization; performanc

0引言

对于提高钢板的强度，通常有固溶强化、细晶强化、析出强化、位错强化等几种机制。（剩余2132字）