| 弛豫过程对贝氏体组织细化的定量研究 |
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| 引用本文： | 苑少强,褚祥治,肖春英,刘大江,陈涛.弛豫过程对贝氏体组织细化的定量研究[J].辽宁工程技术大学学报(自然科学版),2005,24(4):588-590. |
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| 作者姓名： | 苑少强 褚祥治 肖春英 刘大江 陈涛 |
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| 作者单位： | 唐山学院,科研处,河北,唐山,063000 |
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| 基金项目： | 唐山市“机电一体化”重点实验室基金资助项目(04360802B-05)，中信-CBMM铌钢研究与开发基金资助项目(2002RMJS-KY002) |
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| 摘 要： | 利用热模拟、金相显微术、结合定量统计和TEM技术，研究了微合金钢奥氏体区变形后弛豫不同时间的组织演化及析出情况。实验结果表明：经弛豫工艺处理后，贝氏体、马氏体复合组织得到了有效细化，在850℃变形后等温弛豫60～200s时，细化效果最佳。与此同时，应变诱导析出相亦能有效地钉扎位错，析出相的尺寸小于10nm。
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| 关 键 词： | 弛豫 超低碳贝氏体 组织细化 应变诱导析出 |
| 文章编号： | 1008-0562(2005)04-0588-03 |
| 修稿时间： | 2004年10月15 |
Quantitative study on refinement of bainite by relaxation processing |
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| YUAN Shao-qiang,CHU Xiang-zhi,XIAO Chun-ying,LIU Da-jiang,CHEN Tao.Quantitative study on refinement of bainite by relaxation processing[J].Journal of Liaoning Technical University (Natural Science Edition),2005,24(4):588-590. |
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| Authors: | YUAN Shao-qiang CHU Xiang-zhi XIAO Chun-ying LIU Da-jiang CHEN Tao |
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| Abstract: | Thermo-simulation test, metallographic analysis, quantitative measurement along with TEM technique were used to study the microstructures variation of bainite and precipitation during relaxation after deformation in microalloyed steel. The experiments results demonstrate that: the microstructures (complex ultra-fine bainite and martensite) of tested steel have been refined effectively by means of relaxation processing. The optimal refinement could be obtained at 60-200s period during relaxation after deformation. Meanwhile, the dislocations were pinned by the strain-induced precipitates whose size less than 10nm. |
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