Effects of Pulsed Current on Microstructure and Properties of Crack Tip in Remanufacturing Blank
文献类型：期刊论文
| 作者 | Deng Dewei4; Liu Qianqian4; Li Xiaona4; Yu Tao1; Zhang Lin3; Wang Gang2; Zhang Hongchao1 |
| 刊名 | RARE METAL MATERIALS AND ENGINEERING
 |
| 出版日期 | 2017 |
| 卷号 | 46期号:8页码:2208-2213 |
| 关键词 | RECRYSTALLIZATION COPPER METALS remanufacturing pulsed current recrystallization structure refinement |
| ISSN号 | 1002-185X |
| 其他题名 | Effects of Pulsed Current on Microstructure and Properties of Crack Tip in Remanufacturing Blank |
| 英文摘要 | A high energy pulsed current impacting device was used to treat 316 austenitic stainless steel containing prefabricated unilateral fatigue crack aiming for remanufacturing. The influence of high density pulsed current on the microstructure at crack tip was investigated by metallographic microscope, X-ray diffraction, electron backscattered diffraction (EBSD) and transmission electron microscope (TEM). And the evolution of microstructure during melting treatment was analyzed. Results show that the structure at crack tip is obviously refined after the pulsed current processing, and the gradient structure including the columnar crystal area, recrystallization zone and matrix is observed. Due to the rapid heating and cooling, the generation of high-speed electronic wind and electrically induced plasticity effect reduce the thermodynamic barrier of recrystallization or phase change. Thus, the rate of nucleation is increased, and the grain growth process is inhibited. Therefore the grain size of recrystallization zone is smaller than that of the matrix, and hence the mechanical properties of materials are improved. |
| 语种 | 英语 |
| CSCD记录号 | CSCD:6057975 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/155931]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 作者单位 | 1.大连大学 2.清华大学 3.中国科学院金属研究所 4.大连理工大学 |
| 推荐引用方式 GB/T 7714 | Deng Dewei,Liu Qianqian,Li Xiaona,et al. Effects of Pulsed Current on Microstructure and Properties of Crack Tip in Remanufacturing Blank[J]. RARE METAL MATERIALS AND ENGINEERING,2017,46(8):2208-2213. |
| APA | Deng Dewei.,Liu Qianqian.,Li Xiaona.,Yu Tao.,Zhang Lin.,...&Zhang Hongchao.(2017).Effects of Pulsed Current on Microstructure and Properties of Crack Tip in Remanufacturing Blank.RARE METAL MATERIALS AND ENGINEERING,46(8),2208-2213. |
| MLA | Deng Dewei,et al."Effects of Pulsed Current on Microstructure and Properties of Crack Tip in Remanufacturing Blank".RARE METAL MATERIALS AND ENGINEERING 46.8(2017):2208-2213. |
入库方式： OAI收割
来源：金属研究所
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