Effects of scanning speed on microstructure in laser surface-melted single crystal superalloy and theoretical analysis
文献类型：期刊论文
| 作者 | Wang, GW; Liang, JJ; Yang, YH; Shi, Y2; Zhou, YZ; Jin, T; Sun, XF |
| 刊名 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2018-08-01 |
| 卷号 | 34期号:8页码:1315-1324 |
| 关键词 | Scanning speed Laser remelting Single crystal superalloy First dendrites spacing Planar interface |
| ISSN号 | 1005-0302 |
| DOI | 10.1016/j.jmst.2017.11.027 |
| 英文摘要 | Scanning speed is a critical parameter for laser process, which can play a key role in the microstructure evolution of laser melting. In the laser melting of single crystal superalloy, the effects of scanning speed were investigated by experimental analysis and computational simulation. The laser was scanning along [7(1)over-bar0] direction on (001) surface in different speeds. Solidification microstructures of dendrites growth direction and the primary dendritic spacing were analyzed by metallograph. Besides, a planar interface during solidification was taken into attention. Experiment results indicated that the primary dendritic spacing and thickness of planar interface decrease with the increase of speed. Through simulation, distribution of dendrites growth velocity and thermal gradient along dendrite growth direction were calculated, and the simulation of dendrites growth direction agreed with the experiment results. Additionally, a constant value was acquired which can be used to predict the primary dendritic spacing. Moreover, according to curve-fitting method and inequality relation, a model was proposed to predict the thickness of planar interface. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| 学科主题 | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000437810000006 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/80065]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 3.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, GW,Liang, JJ,Yang, YH,et al. Effects of scanning speed on microstructure in laser surface-melted single crystal superalloy and theoretical analysis[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2018,34(8):1315-1324. |
| APA | Wang, GW.,Liang, JJ.,Yang, YH.,Shi, Y.,Zhou, YZ.,...&Sun, XF.(2018).Effects of scanning speed on microstructure in laser surface-melted single crystal superalloy and theoretical analysis.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,34(8),1315-1324. |
| MLA | Wang, GW,et al."Effects of scanning speed on microstructure in laser surface-melted single crystal superalloy and theoretical analysis".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 34.8(2018):1315-1324. |
入库方式： OAI收割
来源：金属研究所
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