A Comprehensive Study of Steel Powders (316L, H13, P20 and 18Ni300) for Their Selective Laser Melting Additive Manufacturing

Yan, Jujie1,2,3; Zhou, Yinghao1,2; Gu, Ruinan1,2; Zhang, Xingmin4; Quach, Wai-Meng3; Yan, Ming1,2

2019-01

10.3390/met9010086

Metals   影响因子和分区

2075-4701

The determination of microstructural details for powder materials is vital for facilitating their selective laser melting (SLM) process. Four widely used steels (316L, H13, P20 and 18Ni300) have been investigated to detail their powders' microstructures as well as laser absorptivity to understand their SLM processing from raw material perspective. Phase components of these four steel powders were characterized by X-ray diffraction (XRD), synchrotron radiation X-ray diffraction (SR-XRD) and scanning electron microscopy (SEM). X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) were utilized to reveal the surface structure of these four steel powders. It is found that phase components of H13, P20 and 18Ni300 are mainly composed of martensite and a small amount of austenite due to the high cooling rate during gas atomization processing, while 316L is characterized by austenite. XPS results show that the four steel powders all possess a layered surface structure, consisting of a thin iron oxide layer at the outmost surface and metal matrix at the inner surface. It is found that the presence of such oxide layer can improve the absorptivity of steel powders and is beneficial for their SLM process.

selective laser melting steel powder surface structure additive manufacturing

SCI

英语

第一 ; 通讯

Fundo para o Desenvolvimento das Ciencias e da Tecnologia (FDCT) of the Macao S.A.R.[129/2014/A3]

Materials Science ; Metallurgy & Metallurgical Engineering

Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:000459738500085

MDPI

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Shenzhen Key Lab Addit Mfg High Performance Mat, Shenzhen 518055, Peoples R China
3.Univ Macau, Dept Civil & Environm Engn, Macau 999078, Peoples R China
4.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China

Yan, Jujie,Zhou, Yinghao,Gu, Ruinan,et al. A Comprehensive Study of Steel Powders (316L, H13, P20 and 18Ni300) for Their Selective Laser Melting Additive Manufacturing[J]. Metals,2019,9(1).

Yan, Jujie,Zhou, Yinghao,Gu, Ruinan,Zhang, Xingmin,Quach, Wai-Meng,&Yan, Ming.(2019).A Comprehensive Study of Steel Powders (316L, H13, P20 and 18Ni300) for Their Selective Laser Melting Additive Manufacturing.Metals,9(1).

Yan, Jujie,et al."A Comprehensive Study of Steel Powders (316L, H13, P20 and 18Ni300) for Their Selective Laser Melting Additive Manufacturing".Metals 9.1(2019).