Layered surface structure of gas-atomized high Nb-containing TiAl powder and its impact on laser energy absorption for selective laser melting

2018 ◽  
Vol 441 ◽  
pp. 210-217 ◽  
Author(s):  
Y.H. Zhou ◽  
S.F. Lin ◽  
Y.H. Hou ◽  
D.W. Wang ◽  
P. Zhou ◽  
...  
Keyword(s):  
Surface Structure ◽  
Energy Absorption ◽  
Selective Laser Melting ◽  
Laser Energy ◽  
Laser Melting ◽  
Laser Energy Absorption

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 Element Vaporization of Ti-6Al-4V Alloy during Selective Laser Melting

Metals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 435 ◽  
Author(s):  
Guohao Zhang ◽  
Jing Chen ◽  
Min Zheng ◽  
Zhenyu Yan ◽  
Xufei Lu ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Selective Laser Melting ◽  
Inductively Coupled Plasma ◽  
Energy Input ◽  
Laser Energy ◽  
Optical Emission ◽  
Enskog Theory ◽  
Laser Melting ◽  
Inductively Coupled ◽  
Optical Emission Spectrometer

The present study aims to reveal the mechanism of element vaporization of Ti-6Al-4V alloy during selective laser melting (SLM). The equations of Redlich–Kister and the thermodynamics principles were employed to calculate the vaporization thermodynamics, which contributes to the obtaining the vaporization kinetic based on the Chapman-Enskog theory and the diffusion model. According to the achieved vaporization model, the elements with the most prominent tendency and flux to vaporize were distinguished. Moreover, the effect of the process parameters on the vaporization of Al and Ti is experimentally investigated using inductively coupled plasma optical emission spectrometer (ICP) technology. The analyzed results of the chemical composition of the powders and builds show a great agreement with the kinetic results calculated by the vaporization model. Notably, the element vaporization can be curbed by regulating the laser energy input.

Laser energy absorption coefficient and in-situ temperature measurement of laser-melted tungsten

2017 ◽  
Vol 124 ◽  
pp. 287-291 ◽  
Author(s):  
T. Maeji ◽  
K. Ibano ◽  
S. Yoshikawa ◽  
D. Inoue ◽  
S. Kuroyanagi ◽  
...  
Keyword(s):  
Absorption Coefficient ◽  
Temperature Measurement ◽  
Energy Absorption ◽  
Laser Energy ◽  
Laser Energy Absorption
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