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| 引用本文： | 李桂艳,敖列哥,张健,马惠霞. ����ģ����������ϵͳ�о���ϸ��֯�ṹ[J]. 物理测试, 2006, 24(5): 0-14 |
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| 作者姓名： | 李桂艳 敖列哥 张健 马惠霞 |
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| 作者单位： | ?????????????????????? ???? ??? 114001 |
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| 摘 要： | 本文利用Gleeble 3800热模拟机多轴大变形系统，对管线钢进行了几组不同热变形制度的多道次大应变热压缩试验，配合控轧后冷却速度，得到了1~2 μm的超细晶组织。通过金相显微镜观察，扫描电镜观察及透射电镜分析，研究其微观组织形态、精细结构特征、析出相特征，从中找出不同热变形参数变化对其微观组织的影响及析出物析出的影响规律。
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| 关 键 词： | ????? ????????? ?????? |
| 文章编号： | 1001-0777(2006)05-0014-05 |
| 收稿时间： | 2006-02-17 |
Study on Ultrafine-grain Structure by Multi-axis Deformation Test in Simulator |
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| LI Gui-yan,AO Lie-ge,ZHNAG jian,MA Hui-xia. Study on Ultrafine-grain Structure by Multi-axis Deformation Test in Simulator[J]. Physics Examination and Testing, 2006, 24(5): 0-14 |
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| Authors: | LI Gui-yan AO Lie-ge ZHNAG jian MA Hui-xia |
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| Affiliation: | Technology Center??Anshan Iron & Steel Group Corporation, Anshan 114001, Liaoning, China |
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| Abstract: | The multiple pass deformation testing of pipeline steel have been carried out on the Gleeble 3800 simulation machine. Ultrafine grain structure on the order of 2 μm or less in diameter have been obtained at different forming and cooling conditions . The optical microstructure was characterized. Transmission electron microscopy analysis were carried out to investigate the morphology of ultrafine grain and to characterize the fine structure and precipitation. The influence of varying hot deformation conditions on the structure and precipitation have been studied. |
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| Keywords: | simulation multi-axis Maxstrain deformation ultrafine-grain structure |
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