| 60Si2Mn半固态压缩变形组织演变 |
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| 引用本文： | 杨雄飞,康永林,宋仁伯,毛卫民,杨卯生.60Si2Mn半固态压缩变形组织演变[J].中国有色金属学报,2000(Z1). |
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| 作者姓名： | 杨雄飞 康永林 宋仁伯 毛卫民 杨卯生 |
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| 作者单位： | 北京科技大学材料科学与工程学院!北京100083 |
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| 基金项目： | 国家自然科学基金!资助项目 ( 5999544 0 ) |
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| 摘 要： | 利用Gleeble 1 50 0材料热模拟机 ,研究了电磁搅拌的半固态 60Si2Mn在不同的变形量、变形温度以及变形速率下触变成形时的组织演变规律和成形机理 ,并与变形前的微观组织进行了比较。结果表明 ,在半固态条件下随变形量增加或变形温度降低变形区晶粒减小 ,变形速率的影响不明显 ,存在有使晶粒变形的临界变形量与均匀变形的最佳变形温度。
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| 关 键 词： | 半固态 微观组织 晶粒尺寸 偏析 压缩 |
Microstructure development of semi-solid 60Si2Mn during compression |
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| YANG Xiong-fei,KANG Yong-lin,SONG Ren-bo,MAO Wei-min,YANG Mao-sheng.Microstructure development of semi-solid 60Si2Mn during compression[J].The Chinese Journal of Nonferrous Metals,2000(Z1). |
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| Authors: | YANG Xiong-fei KANG Yong-lin SONG Ren-bo MAO Wei-min YANG Mao-sheng |
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| Abstract: | The laws of microstructure development and deformation mechanism of semi-solid 60Si2Mn fabricated by electromagnetic stirring at different reductions, deformation temperatures and rates during thixoforming were studied on Gleeble-1500 thermal simulator, and the micro-structures of deformation and non-deformation were compared. The results show that grain size within deformation zone decreases as the amount of deformation increases or deformation temperature decreases, but the deformation rate only has a little effect. Besides, there is a critical deformation for grain size to reduce and an optimal deformation temperature. |
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| Keywords: | semi-solid micro-structure grain size segregation reductionical properties strengthening and toughening |
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