轧制工艺对CSP生产低碳贝氏体高强钢组织和性能的影响  被引量:5

Effects of Processing Parameters on Microstructures and Properties of Low-carbon Bainitic High Strength Steels Produced by CSP

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作  者:陈林恒[1] 康永林[1] 黎先浩[1] 温德智[2] 刘国民[2] 

机构地区:[1]北京科技大学材料科学与工程学院,北京100083 [2]涟源钢铁集团有限公司,湖南娄底417009

出  处:《材料工程》2009年第9期47-50,60,共5页Journal of Materials Engineering

摘  要:研究了CSP工艺生产低碳贝氏体高强钢的工艺控制与显微组织和力学性能的关系。通过比较不同终轧温度和卷取温度对低碳贝氏体高强钢组织性能的影响,得出钢板最终组织为不同比例的铁素体加贝氏体复相组织,且随着终轧温度和卷取温度尤其是卷取温度的降低,组织中贝氏体的体积分数增多,组织更加细小均匀,并且可以获得细小弥散的M-A组织和析出粒子,从而提高钢的屈服强度和韧性。The effects of controlled rolling and controlled cooling parameters on the microstructures and mechanical properties of low carbon bainitic high strength steels produced by CSP(Compact Strip Production) were investigated. Through comparing the influence of several hot-rolling processes on the microstructures and properties, the results indicated that with the decreasing of finish rolling and coiling temperature especially coiling temperature,the volume fraction of bainite in bainite-ferrite matrix increased. Moreover, much more finer microstructure , M-A islands and smaller dispersion precipitates were obtained by reducing the finish rolling and coiling temperature. Therefore the yield strength and toughness were improved.

关 键 词:贝氏体 终轧温度 卷取温度 M-A岛 析出 

分 类 号:TG142.1[一般工业技术—材料科学与工程] TG146.1[金属学及工艺—金属材料]

 

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