Characterization of stainless steel parts by Laser Metal Deposition Shaping

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	Characterization of stainless steel parts by Laser Metal Deposition Shaping
	Zhang K(张凯); Wang, Shijie; Liu WJ(刘伟军); Shang XF(尚晓峰)
刊名	Materials and Design
	2014
卷号	55 页码:104-119
关键词	Deposition Laser applications Mechanical properties Morphology Optimization Powder metals Scanning electron microscopy X ray diffraction
ISSN号	0261-3069
通讯作者	张凯
产权排序	2
中文摘要	Laser Metal Deposition Shaping (LMDS) is a new rapid manufacturing technology, which can build fully-dense metal components directly from the information transferred from a computer file by depositing metal powders layer by layer with neither mould nor tool. Typically, performed with stainless steel (SS) 316 powder, the orthogonal experiments combining with the ideal overlapping model were applied to ascertain the optimal processing parameters. Then the characteristics of microstructure, composition and phase of as-deposited cladding layers were analyzed through Scanning Electron Microscope (SEM) and X-ray diffraction (XRD), as well as relative model. Furthermore, the cooling rate and the solidification velocity during LMDS were evaluated based on empirical method. With the optimal parameters, some parts were fabricated without obvious defects, and then the mechanical properties of them were tested. Finally, the influencing regularities of critical parameters on microstructure and properties were concluded by comparison. The results prove that the microstructure of SS 316 deposits is composed of the slender dendrites growing epitaxially from the substrate, the mechanical properties are favorable and anisotropic, and the composition is uniform. Besides, the microstructure morphology and the mechanical properties are affected by the varied processing parameters at different degrees. Among them, the scanning speed shows the most remarkable effects on microstructure morphology, characteristic microscale, mechanical properties, as well as geometric shape of as-deposited parts.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Materials Science, Multidisciplinary
研究领域[WOS]	Materials Science
关键词[WOS]	THERMAL-BEHAVIOR ; POWDER ; WIRE ; SOLIDIFICATION ; FABRICATION ; COMPONENTS ; CORROSION
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000329118700013
公开日期	2013-12-26
内容类型	期刊论文
源URL	[http://ir.sia.cn/handle/173321/13956]
专题	沈阳自动化研究所_装备制造技术研究室
推荐引用方式 GB/T 7714	Zhang K,Wang, Shijie,Liu WJ,et al. Characterization of stainless steel parts by Laser Metal Deposition Shaping[J]. Materials and Design,2014,55:104-119.
APA	Zhang K,Wang, Shijie,Liu WJ,&Shang XF.(2014).Characterization of stainless steel parts by Laser Metal Deposition Shaping.Materials and Design,55,104-119.
MLA	Zhang K,et al."Characterization of stainless steel parts by Laser Metal Deposition Shaping".Materials and Design 55(2014):104-119.