| 准下贝氏体的孪晶及形成机制 |
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| 引用本文： | 栾道成,魏成富,杨哿.准下贝氏体的孪晶及形成机制[J].金属学报,1998,34(1):24-30. |
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| 作者姓名： | 栾道成 魏成富 杨哿 |
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| 作者单位： | 四川工业学院材料科学与工程系!成都，611744，四川工业学院材料科学与工程系!成都，611744，四川工业学院材料科学与工程系!成都，611744 |
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| 基金项目： | 四川省青年科学基金!925010 |
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| 摘 要： | 透射电镜实验证实在含硅钢准下贝氏体组织中存在孪晶亚结构，贝氏体中脊亦存在孪晶。中脊与残余奥氏体孪晶是贝氏体铁素体切变共格长大时协调均匀切变形成的变形挛晶。
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| 关 键 词： | 含硅钢 准下贝氏体 孪晶 切变机制 合金钢 |
| 收稿时间： | 1998-01-18 |
| 修稿时间： | 1998-01-18 |
TWINS AND ITS FORMATION MECHANISM IN LOWER META-BAINITE |
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| LUAN Daocheng,WEI Chengfu,YANG Ge.TWINS AND ITS FORMATION MECHANISM IN LOWER META-BAINITE[J].Acta Metallurgica Sinica,1998,34(1):24-30. |
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| Authors: | LUAN Daocheng WEI Chengfu YANG Ge |
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| Affiliation: | LUAN Daocheng,WEI Chengfu,YANG Ge (Department of Materials Science and Engineering,Sichuan Institute of Technology,Chengdu ) |
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| Abstract: | By TEM it has been confirmed that twin substructures exist in lower metabainite in silicon-containing steel. A large number of twins was found in bainitic midribs for first time. Twins in midribs (M-M) as well as retained austenite (Ar) are deformation twins formed by coordinating uniform shear deformation as bainitic ferrite lath grows, twins in bainitic ferrite (BF)mainly are those inherited in retained austenite as BF thickens by shear mechanism in broad face. and twin planes correspond to the interface ledges, which shows ledges can not migrate along side direction of broad face. Based on the results, a model of twin formation in lower meta-bainite was suggested. |
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| Keywords: | silicon-containing steel lower meta-bainite twin shear mechanism |
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