文新理,蒋波,刘翔,刘雅政

• 1:北京科技大材料科学与工程学院

摘要(Abstract)：

利用光学显微镜和扫描电镜观察了管线钢X80卷板横裂纹的微观形貌和组织特征,利用Gleeble-3800热模拟试验机测定了X80材料的动态连续冷却转变曲线(动态CCT曲线),在国内某生产线上进行了轧制实验和工艺优化。结果表明:精轧过程先共析铁素体的析出是导致横裂纹的根本原因,进入精轧机组的中间坯厚度(BH)和终轧温度(FDT)对X80卷板的表面质量和力学性能有重要影响,当BH=55 mm、FDT=800℃时表面质量和力学性能均合格。

关键词(KeyWords)： 管线钢X80;横裂纹;轧制工艺;表面质量

Abstract:

Keywords:

基金项目(Foundation): 中央高校基本科研业务费专项资金资助(FRF-TP-12-046A);; 北京高校“青年英才计划”

作者(Author): 文新理,蒋波,刘翔,刘雅政

DOI: 10.13289/j.issn.1009-6264.2014.11.017

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