| 20钢渗硼过程中硼化物形核和生长的TEM观察及室温形变的影响SCIEI |
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| 引用本文： | 蒋百灵,雷廷权,刘威,崔约贤.20钢渗硼过程中硼化物形核和生长的TEM观察及室温形变的影响SCIEI[J].金属学报,1990,26(2):41-45. |
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| 作者姓名： | 蒋百灵 雷廷权 刘威 崔约贤 |
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| 作者单位： | 哈尔滨工业大学金属材料及工艺系，哈尔滨工业大学，哈尔滨工业大学，哈尔滨工业大学 哈尔滨(150006) |
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| 摘 要： | 本文采用单向减薄制样法在透射电镜下直接观察了20钢渗硼初期硼化物的形核和生长特性及室温形变的影响。X射线及电子探针分析结果表明:渗硼初期试样表层仅有Fe_2B形成;表层硼原子浓度与形变量之间具有单调增长的关系;偏聚于位错胞壁之中的硼原子阻碍了形变组织的恢复和再结晶,加速了硼化物的形核和长大。
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| 关 键 词： | 20钢 渗硼 硼化物 生长 形变 形核 |
| 收稿时间： | 1990-02-18 |
| 修稿时间： | 1990-02-18 |
TEM OBSERVATION OF NUCLEATION AND GROWTH OF BORIDES DURING BORONIZATION OF STEEL 20 AND INFLUENCE OF PRIOR DEFORMATION |
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| JIANG Bailing,LEI Tingquan,LIU Wei,CUI Yuexian Harbin Institute of Technology.TEM OBSERVATION OF NUCLEATION AND GROWTH OF BORIDES DURING BORONIZATION OF STEEL 20 AND INFLUENCE OF PRIOR DEFORMATION[J].Acta Metallurgica Sinica,1990,26(2):41-45. |
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| Authors: | JIANG Bailing LEI Tingquan LIU Wei CUI Yuexian Harbin Institute of Technology |
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| Affiliation: | JIANG Bailing,LEI Tingquan,LIU Wei,CUI Yuexian Harbin Institute of Technology Department of Metallic Materials and Technology,Harbin Institute of Technology,Harbin |
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| Abstract: | TEM observation in situ on the single-side thinned specimens wasmade of the nucleation and growth of borides during boronization of steel 20 andthe influence of prior room temperature deformation. The results of X-ray diffrac-tion and electron probe microstructure analysis show that only Fe_2B formed inthe surface layer of specimens at the beginning of boronization; the atomic concen-tration of B in the surface layer increased with the increase of deformation mon-otonously; and the segregation of B atoms in the dislocation cells hindered the re-covery and recrystallization of the deformed structure of the matrix and accelara-ted the nucleation and growth of borides in the surface layer. |
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| Keywords: | boronization boride dislocation nucleation growth deformation |
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