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TRIP钢变形奥氏体连续冷却过程的相变及组织研究

Phase Transformation and Microstructure of a TRIP Steel During Continuous Cooling After Ausforming

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【作者】 张迎晖康永林于浩刘晓方圆

【Author】 ZHANG Ying-hui~(1,3),KANG Yong-lin~1,YU Hao~1,LIU Xiao~2,FANG Yuan~2(1.School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China;2.Shanghai Baosteel Group Corp.,Shanghai 200941,China;3.Jiangxi University of Science and Technology,Ganzhou Jiangxi 341000,China)

【机构】 北京科技大学材料科学与工程学院上海宝钢集团公司上海宝钢集团公司 北京100083江西理工大学江西赣州341000北京100083上海200941

【摘要】 利用热/力模拟试验机研究了C-Si-Mn系TR IP钢在不同连续冷却条件下的组织变化情况,用热膨胀法绘制了动态CCT曲线,分析了冷却速度对组织的影响。结果表明,在动态CCT曲线中,相变区域包括A→F转变区和A→B转变区,当冷却速度>10℃/s时,有贝氏体组织生成,冷却速度对铁素体、贝氏体组织形貌影响极大。

【Abstract】 The phase transformation and microstructure of a C-Si-Mn TRIP steel during continuous cooling after ausforming were studied by hot simulation experiment machine.The continuous cooling transformation curves were drawn using thermal dilation method,and the influence of the cooling rate on the microstructure was analyzed.The results show that the area of the dynamic continuous cooling transformation curves includes two fields:proeutectoid ferrite is the transformation production in a field,bainite is in another.Bainite can be formed during the cooling rate at 10℃/s.The cooling rates have influence greatly on microstructure of ferrite and bainite.

【关键词】 TRIP钢CCT曲线相变组织
【Key words】 TRIP steelCCT curvestransformationmicrostructure
  • 【文献出处】 金属热处理 ,Heat Treatment of Metals , 编辑部邮箱 ,2005年12期
  • 【分类号】TG113
  • 【被引频次】9
  • 【下载频次】470
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