晶粒细化及其对 变形强化相变铁素体晶粒尺寸的影响.pdfVIP

2001 年 8 月 ( ) 钢 　铁 　研 　究 第 4 期 总第 121 期 August 　2001 ( ) Research on Iron Steel No. 4 　 Sum121 普通低碳钢奥氏体晶粒细化及其对 变形强化相变铁素体晶粒尺寸的影响 王瑞珍 　杨忠民　赵 　燕 　车彦民 (钢铁研究总院) 摘 　要 　研究了普通低碳钢奥氏体晶粒的细化及其对形变强化铁素体晶粒尺寸的 ( ) 影响 。结果表明:通过在奥氏体区进行低温 850 ℃ 较大变形 ,奥氏体晶粒尺寸可细化 μ 至约 10 m 。奥氏体晶粒尺寸对形变相变后的铁素体晶粒尺寸产生影响 。奥氏体晶粒 细小 ,则铁素体晶粒细小且均匀 。但其影响随着变形温度的降低而逐渐减弱 。 关键词 　普碳钢 　晶粒细化 　形变强化相变 　晶粒尺寸 AUSTENITE GRAIN REFINEMENT AND ITS INFL UENCE ON FERRITE GRAIN SIZE OF STRAIN ENHANCED TRANFORMATION FOR PLAIN LOW CARBON STEEL Wang Ruizhen 　Yang Zhongmin 　Zhao Yan 　Che Yanmin (Central Iron Steel Research Institute) Synopsis 　Austenite grain refinement and its influence on the ferrite grain size of strain - en hanced tranformation for plain low carbon steel have been studied. The results show that austenite grain can be refined to 10 μ m by applying heavy deformation at temperature 850 ℃and size of austenite grain has influence on the ferrite grain size of strain - enhanced transformation. The smaller the austenite grain size is , the smaller and more homogeneous the ferrite grain size will be. However the influence is weakening with down fall of the deformation