| Microstructural and Mechanical Properties of a NiCoCrAlY Coating Prepared by Laser Cladding on a Compacted Graphite Cast Iron Surface |
| Liu, H.; Yu G(虞钢) ; He XL(何秀丽); Yang, H. F.; Han, Z. T.; Yang, HF (reprint author), China Univ Min & Technol, Sch Mech & Elect Engn, Xuzhou 221116, Jiangsu, Peoples R China.
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| 发表期刊 | LASERS IN ENGINEERING
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| 2017
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| 卷号 | 37期号:4-6页码:273-289 |
| ISSN | 0898-1507
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| 摘要 | Laser cladding with synchronous powder feeding on the surface of compacted graphite cast iron (CGCI) was conducted using NiCoCrAlY powder in this research, with the aim of obtaining coatings mainly consisting of directional columnar crystals in the microstructure. A metallographic microscope, scanning electron microscope (SEM), X-ray diffractometer (XRD), and Vickers hardness tester were used to analyse the dilution rate, bonding properties, microstructure, and microhardness of the coating. The research results showed that: the alloy coating mainly consisted of the dendrites of gamma(Fe, Ni) and the carbide phases of Cr7C3 and Cr23C6 between grain boundaries. Meanwhile, it was discovered that the powder feed rate can significantly influence the crystalline state within the coating: with increasing powder feed rate, the microstructure of the coating was gradually converted from dendrites with poor directivity to columnar crystals with strong directivity, and the average microhardness was reduced owning to the decrease of the amount of Cr7C3 and Cr23C6 phases. |
| 关键词 | Nd:Yag Laser
Compacted Graphite Cast Iron (Cgci)
Nicocraly Powder
Laser Cladding
Columnar Ctystal Growth
Boa Rang Interface
Microhardness
Powder Feed Rate
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000406998700007
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| 关键词[WOS] | SUPERALLOY SINGLE-CRYSTALS
; DEPOSITION
; TEMPERATURE
; RESISTANCE
; EVOLUTION
; GROWTH
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| WOS研究方向 | Materials Science
; Optics
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| WOS类目 | Materials Science, Multidisciplinary
; Optics
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| 项目资助者 | Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
; Discipline Research Initiative of CUMT(2015XKQY12)
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| 课题组名称 | MAM激光智能制造工艺力学
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| 论文分区 | Q4
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| 力学所作者排名 | 1
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/70035
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| 专题 | 先进制造工艺力学实验室
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| 通讯作者 | Yang, HF (reprint author), China Univ Min & Technol, Sch Mech & Elect Engn, Xuzhou 221116, Jiangsu, Peoples R China. |
推荐引用方式
GB/T 7714 |
Liu, H.,Yu G,He XL,et al. Microstructural and Mechanical Properties of a NiCoCrAlY Coating Prepared by Laser Cladding on a Compacted Graphite Cast Iron Surface[J]. LASERS IN ENGINEERING,2017,37,4-6,:273-289.
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| APA |
Liu, H.,虞钢,何秀丽,Yang, H. F.,Han, Z. T.,&Yang, HF .(2017).Microstructural and Mechanical Properties of a NiCoCrAlY Coating Prepared by Laser Cladding on a Compacted Graphite Cast Iron Surface.LASERS IN ENGINEERING,37(4-6),273-289.
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| MLA |
Liu, H.,et al."Microstructural and Mechanical Properties of a NiCoCrAlY Coating Prepared by Laser Cladding on a Compacted Graphite Cast Iron Surface".LASERS IN ENGINEERING 37.4-6(2017):273-289.
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