Phase separated characteristics affected by cooling rate of immiscible Cu-Cr alloy by laser surface melting
文献类型：期刊论文
| 作者 | Zhang LT(张犁天); Yu G(虞钢) ; He XL(何秀丽); Li SX(李少霞); Ning WJ(宁伟健); Wang X(王旭)
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| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2019-01-25 |
| 卷号 | 772页码:209-217 |
| 关键词 | Cu-Cr immiscible alloy Liquid phase separation (LPS) Laser surface melting (LSM) Microstructure |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2018.08.012 |
| 通讯作者 | Yu, Gang(gyu@imech.ac.cn) |
| 英文摘要 | The effect of cooling rates on the solidified microstructure of Cu-50Cr (wt. %) produced by laser surface melting (LSM) was studied. Layered structure transformed into a dispersed structure when the cooling rate increased from similar to 10(5) K/s to similar to 10(6) K/s. The average diameter of the Cr-rich spheroids in the homogenous layer was reduced to less than 1 mu m, and the migration velocity by Marangoni motion was similar to 10(3) times higher than the velocity by Stokes sedimentation, suggesting that the movements of alpha-Cr droplets containing supersaturated Cu phase during liquid phase separation (LPS) were dominated by Marangoni motion. Although the collisions and coagulations between Cr droplets couldn't be eliminated, the growth was suppressed by high cooling rate. The melt layer presented improved homogenous microhardness and the well-dispersed melt layer exhibited higher withstanding voltage than that of the untreated. (C) 2018 Elsevier B.V. All rights reserved. |
| 分类号 | 一类 |
| WOS关键词 | LIQUID ; MICROSTRUCTURE ; CHROMIUM ; COPPER |
| WOS研究方向 | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000449651100026 |
| 资助机构 | Chinese Academy of Sciences [yz201636] ; National Natural Science Foundation of China [11672304, 11502269, 11272316, 11272317] |
| 其他责任者 | Yu, G |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/78464]  |
| 专题 | 力学研究所_先进制造工艺力学重点实验室 |
| 作者单位 | 1.{Zhang, Litian、Yu, Gang、He, Xiuli、Li, Shaoxia、Ning, Weijian、Wang, Xu} Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 2.{Zhang, Litian、Yu, Gang、He, Xiuli、Wang, Xu} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang LT,Yu G,He XL,et al. Phase separated characteristics affected by cooling rate of immiscible Cu-Cr alloy by laser surface melting[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,772:209-217. |
| APA | 张犁天,虞钢,何秀丽,李少霞,宁伟健,&王旭.(2019).Phase separated characteristics affected by cooling rate of immiscible Cu-Cr alloy by laser surface melting.JOURNAL OF ALLOYS AND COMPOUNDS,772,209-217. |
| MLA | 张犁天,et al."Phase separated characteristics affected by cooling rate of immiscible Cu-Cr alloy by laser surface melting".JOURNAL OF ALLOYS AND COMPOUNDS 772(2019):209-217. |
入库方式： OAI收割
来源：力学研究所
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