A high strength low alloy steel fabricated by direct laser deposition

IMR OpenIR

	A high strength low alloy steel fabricated by direct laser deposition
	Wang, Qiang; Zhang, Song; Zhang, Chunhua; Wang, Jianqiang; Shahzad, M. Babar; Chen, Haitao; Chen, Jiang
	2019-03-01
Source Publication	VACUUM
ISSN	0042-207X
Volume	161 Pages:225-231
Abstract	Direct laser metal deposition (DLMD) can produce near net shape parts by layer-by-layer deposition of metallic powders. In the present study, DLMD was used to fabricate a high strength low alloy (HSLA) steel. The characteristics of the microstructure and mechanical properties of the as-built HSLA were characterized using optical microscopy, electron back-scatter diffraction (EBSD), transmission electron microscopy, and tensile test machine respectively. It was found that the optimized parameters ensured a high quality of the built samples. The as-built HSLA steel was mainly composed of alpha-Fe (Ferrite) phase with a trace of C6Cr23 and Fe3C phases. TEM result proved the formation of martensite phase. Most grain boundaries misorientation angles were low-angle grain boundary which elevated the strengthening effect. Tensile strength, yield strength, and elongation of the as deposited HSLA were comparable with other high-performance alloy steels. The present results show the potential of DLMD for the fabrication of a HSLA with excellent mechanical properties.
Keyword	High strength low alloy steel Direct laser metal deposition Phase distribution EBSD Mechanical properties
Indexed By	SCI
Language	英语
WOS ID	WOS:000458591100031
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Citation statistics	Cited Times:6[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/81324
Collection	中国科学院金属研究所
Recommended Citation GB/T 7714	Wang, Qiang,Zhang, Song,Zhang, Chunhua,et al. A high strength low alloy steel fabricated by direct laser deposition[J]. VACUUM,2019,161:225-231.
APA	Wang, Qiang.,Zhang, Song.,Zhang, Chunhua.,Wang, Jianqiang.,Shahzad, M. Babar.,...&Chen, Jiang.(2019).A high strength low alloy steel fabricated by direct laser deposition.VACUUM,161,225-231.
MLA	Wang, Qiang,et al."A high strength low alloy steel fabricated by direct laser deposition".VACUUM 161(2019):225-231.

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