Yttrium for the Selective Laser Melting of Ti-45Al-8Nb Intermetallic: Powder Surface Structure, Laser Absorptivity, and Printability

2021 ◽  
pp. 161970
Author(s):  
W.P. Li ◽  
H. Wang ◽  
Y.H. Zhou ◽  
Y.Y. Zhu ◽  
S.F. Lin ◽  
...  
Keyword(s):  
Surface Structure ◽  
Selective Laser Melting ◽  
Laser Melting ◽  
Powder Surface ◽  
Structure Laser

scholarly journals Manufacturing of macro scale composites with strengthening structure made with use of SLM technology – machinability

Mechanik ◽  
2018 ◽  
Vol 91 (10) ◽  
pp. 895-897
Author(s):  
Emilia Bachtiak-Radka ◽  
Damian Sobków ◽  
Krzysztof Filipowicz
Keyword(s):  
Surface Structure ◽  
Selective Laser Melting ◽  
Confocal Microscope ◽  
Laser Melting ◽  
Surface Parameters ◽  
Macro Scale ◽  
The Right

Attempts of defining of machinability of manufactured details relative to research aimed to create macro composites with defined strengthening structure made using selective laser melting (SLM technology) were presented. The structures are made of significant different materials than the filling and that causes a problem with choosing the right tools and parameters for the whole element. That is why there were manufactured preliminary tests of achieving similar surface structure while machining manufactured samples. Measurements of surface parameters were made using confocal microscope. Borders between strengthening structure and filler were observed in order to check if the materials were separated during machining. There was also observed wear of machining tools made of different materials after machining with different parameters.

scholarly journals On the role of melt flow into the surface structure and porosity development during selective laser melting

2015 ◽  
Vol 96 ◽  
pp. 72-79 ◽  
Author(s):  
Chunlei Qiu ◽  
Chinnapat Panwisawas ◽  
Mark Ward ◽  
Hector C. Basoalto ◽  
Jeffery W. Brooks ◽  
...  
Keyword(s):  
Surface Structure ◽  
Selective Laser Melting ◽  
Melt Flow ◽  
Laser Melting ◽  
Porosity Development

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

Metals ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 86 ◽  
Author(s):  
Jujie Yan ◽  
Yinghao Zhou ◽  
Ruinan Gu ◽  
Xingmin Zhang ◽  
Wai-Meng Quach ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Surface Structure ◽  
Oxide Layer ◽  
Selective Laser Melting ◽  
Photoelectron Spectroscopy ◽  
Raw Material ◽  
Powder Materials ◽  
X Ray Diffraction ◽  
Laser Melting ◽  
X Ray

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.

MANUFACTURING NOVEL HEAT TRANSFER DEVICES BY SELECTIVE LASER MELTING

Equipment ◽  
2006 ◽  
Author(s):  
S. Tsopanos ◽  
M. Wong ◽  
I. Owen ◽  
C. J. Sutcliffe
Keyword(s):  
Heat Transfer ◽  
Selective Laser Melting ◽  
Laser Melting

Properties of Ti-6Al-4V titanium alloys obtained by selective laser melting

2019 ◽  
pp. 46-57
Author(s):  
M.A. Kaplan ◽  
◽  
М.A. Smirnov ◽  
A.A. Kirsankin ◽  
M.A. Sevostyanov ◽  
...  
Keyword(s):  
Titanium Alloys ◽  
Selective Laser Melting ◽  
Laser Melting
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