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    衣海龙, 麻庆申, 杜林秀, 刘相华, 王国栋. 待温厚度与终轧温度对X80管线钢组织中马氏体/奥氏体岛的影响[J]. 机械工程材料, 2009, 33(6): 37-39.
    引用本文: 衣海龙, 麻庆申, 杜林秀, 刘相华, 王国栋. 待温厚度与终轧温度对X80管线钢组织中马氏体/奥氏体岛的影响[J]. 机械工程材料, 2009, 33(6): 37-39.
    shu
    YI Hai-long, MA Qing-shen, DU Lin-xiu, LIU Xiang-hua, WANG Guo-dong. Influences of Temperature-holding Thickness and Finish Rolling Temperature on Martensite/Austenite Islands in X80 Pipeline Steel[J]. Materials and Mechanical Engineering, 2009, 33(6): 37-39.
    Citation: YI Hai-long, MA Qing-shen, DU Lin-xiu, LIU Xiang-hua, WANG Guo-dong. Influences of Temperature-holding Thickness and Finish Rolling Temperature on Martensite/Austenite Islands in X80 Pipeline Steel[J]. Materials and Mechanical Engineering, 2009, 33(6): 37-39.
    shu

    待温厚度与终轧温度对X80管线钢组织中马氏体/奥氏体岛的影响

    Influences of Temperature-holding Thickness and Finish Rolling Temperature on Martensite/Austenite Islands in X80 Pipeline Steel

      摘要
    • 摘要: 利用光学显微镜、扫描电镜及透射电镜分析了经不同工艺热轧得到的22 mm厚X80管线钢中马氏体/奥氏体(M/A)岛的形貌及分布.结果表明:M/A岛的形貌及分布与待温厚度和终轧温度密切相关,适当增加待温厚度,降低终轧温度有利于细化M/A岛的组织,减小M/A岛的尺寸,降低M/A岛的体积分数,使X80管线钢的落锤性能得到改善.

       

      Abstract: Morphology and distribution of martensite/austenite(M/A) islands in X80 pipeline steel hot rdled with different processes were observed by optical microscopy,scanning electron microscopy and transmission electron microscopy.The results show that the temperature-holding thickness and finish rolling temperature exerted a great influence on the size and distribution of M/A islands.When the temperature-holding thickness of the billet went up and the finish rolling temperature went down,it could facilitate the refiment of M/A structure ,reduce the size and volumn fraction of M/A islands,and improve drop-weight-tear-test(DWTT) performance of the steel.

       

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