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Laser melting deposition of a porosity-free alloy steel by application of high oxygen-containing powders mixed with Cr particles
Kang, Hongwei; Dong, Zhihong; Zhang, Wei; Xie, Yujiang; Peng, Xiao
2019
Source PublicationVACUUM
ISSN0042-207X
Volume159Pages:319-323
AbstractLaser melting deposition (LMD) of an alloy steel by application of commercial 12CrNi2 powder with 0 content as high as 0.53 wt% has been investigated. It shows that the LMD alloy steel contains micron-sized pores. The pore formation, which is assumed to result from gas bubbles due to the reaction of carbon and oxygen in the laser molten pool, can be prevented by mixing the alloy steel powder with an appropriate amount of Cr particles. The result is interpreted based on reaction thermodynamics in the molten pool in combination with TEM observation of the microstructure of the LMDed alloy steel.
KeywordLaser metal deposition Alloy steels Porosity Microstructure TEM
Indexed BySCI
Language英语
WOS IDWOS:000454964400043
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81498
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Kang, Hongwei,Dong, Zhihong,Zhang, Wei,et al. Laser melting deposition of a porosity-free alloy steel by application of high oxygen-containing powders mixed with Cr particles[J]. VACUUM,2019,159:319-323.
APA Kang, Hongwei,Dong, Zhihong,Zhang, Wei,Xie, Yujiang,&Peng, Xiao.(2019).Laser melting deposition of a porosity-free alloy steel by application of high oxygen-containing powders mixed with Cr particles.VACUUM,159,319-323.
MLA Kang, Hongwei,et al."Laser melting deposition of a porosity-free alloy steel by application of high oxygen-containing powders mixed with Cr particles".VACUUM 159(2019):319-323.
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