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| ECAP温变形制备亚微晶钢中渗碳体变形特征 | |
| 引用本文： | 冯广海,黄俊霞,杜忠泽,王经涛,赵西成. ECAP温变形制备亚微晶钢中渗碳体变形特征[J]. 材料热处理学报, 2011, 32(6) |
| 作者姓名： | 冯广海 黄俊霞 杜忠泽 王经涛 赵西成 |
| 作者单位： | 1. 宝钢集团一钢公司技术中心,上海,200931 2. 西安建筑科技大学冶金工程学院,陕西西安,710055 3. 南京理工大学材料科学与工程系,江苏南京,210094 |
| 基金项目： | 国家自然科学基金资助项目(59974018); 陕西省自然科学基金资助项目(2003E121) |
| 摘 要： | 采用透射和扫描电子显微镜研究了ECAP变形中渗碳体的变形特征。结果表明:片状渗碳体相主要以弯曲变形、剪切变形、拉伸变形、扭折变形和剪断变形5种方式协调ECAP剧烈塑性变形,这表明在本实验ECAP纯剪切变形条件下钢中硬而脆的渗碳体相具有良好的塑性变形能力。渗碳体片层的变形方式主要是取决于渗碳体所处的应力状态,而渗碳体所处的应力状态是与渗碳体的片层取向和片层厚度密切相关,其中渗碳体的片层厚度起决定性作用。 |
| 关 键 词： | 亚微晶材料 钢 ECAP变形 渗碳体 显微组织 |
Characteristics of cementite deformation in submicrometer grained steel by equal channel angular pressing |
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| FENG Guang-hai,HUANG Jun-xia,DU Zhong-ze,WANG Jing-tao,ZHAO Xi-cheng. Characteristics of cementite deformation in submicrometer grained steel by equal channel angular pressing[J]. Transactions of Materials and Heat Treatment, 2011, 32(6) | |
| Authors: | FENG Guang-hai HUANG Jun-xia DU Zhong-ze WANG Jing-tao ZHAO Xi-cheng |
| Affiliation: | FENG Guang-hai1,HUANG Jun-xia2,DU Zhong-ze1,WANG Jing-tao3,ZHAO Xi-cheng1(1.School of Metallurgical Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China,2.Technical Center,Baosteel Group Shanghai No.1 Iron & Steel Co Ltd,Shanghai 200431,3.Department of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing 210094,China) |
| Abstract: | Characteristics of cementite deformation in a submicrometer grained steel by warm ECAP was investigated by means of scanning electron microscopy(SEM) and transmission electron microscopy(TEM) technique.The results show that the deformation modes of cementite lamellae in steel include bending deformation,shearing deformation,tension deformation,kinking deformation and shearing fracture without cracking in order to coordinate the severe shear deformation in ECAP.It indicates that the hard and brittle cementit... |
| Keywords: | submicrometer grained material steel ECAP deformation cementite microstructure |
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