Directly Fabricated Al2O3/GdAlO3 Eutectic Ceramic with Large Smooth Surface by Selective Laser Melting: Rapid Solidification Behavior and Thermal Field Simulation

2021 ◽  
Author(s):  
Zhonglin Shen ◽  
Haijun Su ◽  
Haifang Liu ◽  
Di Zhao ◽  
Yuan Liu ◽  
...  
Keyword(s):  
Selective Laser Melting ◽  
Rapid Solidification ◽  
Smooth Surface ◽  
Thermal Field ◽  
Solidification Behavior ◽  
Laser Melting ◽  
Field Simulation

A comparison of Selective Laser Melting with bulk rapid solidification of AlSi10Mg alloy

2018 ◽  
Vol 742 ◽  
pp. 271-279 ◽  
Author(s):  
Silvia Marola ◽  
Diego Manfredi ◽  
Gianluca Fiore ◽  
Marco Gabriele Poletti ◽  
Mariangela Lombardi ◽  
...  
Keyword(s):  
Selective Laser Melting ◽  
Rapid Solidification ◽  
Laser Melting

Melting and solidification behavior of Ti-6Al-4V powder during selective laser melting

2019 ◽  
Vol 103 (9-12) ◽  
pp. 4433-4442 ◽  
Author(s):  
Shunya Yamamoto ◽  
Hisashi Azuma ◽  
Shinsuke Suzuki ◽  
Satoshi Kajino ◽  
Naoko Sato ◽  
...  
Keyword(s):  
Selective Laser Melting ◽  
Solidification Behavior ◽  
Laser Melting ◽  
Melting And Solidification

Direct Selective Laser Sintering of WC-Co Cemented Carbide by Premixing of Additives

2012 ◽  
Author(s):  
Hideki Kyogoku ◽  
Takeshi Uemori ◽  
Akihiko Ikuta ◽  
Kenichi Yoshikawa ◽  
Hitoshi Ohmori
Keyword(s):  
Selective Laser Melting ◽  
Laser Power ◽  
Smooth Surface ◽  
Laser Scanning ◽  
Selective Laser Sintering ◽  
Laser Sintering ◽  
Cemented Carbides ◽  
Sintering Process ◽  
Laser Melting ◽  
Scan Speed

In this study, the fabrication conditions of WC cemented carbides by direct selective laser melting were investigated. The effects of additives, such as Co, Cu-20%Sn and Cu powders, and laser scanning conditions on laser sintering process were examined to fabricate a sound laser-scanned body of WC cemented carbides. The optimum laser power, scan speed and scan pitch were found out by experiments. It was found that the continuously smooth single-scan track can be obtained at a lower laser power and a higher scan speed by the addition of 30% Cu powder. The smooth surface of the laser-scanned body could be fabricated at a laser power of 9 W, a scan speed of 20 mm/s and a scan pitch of 0.05 mm.

Rapid Solidification: Selective Laser Melting of AlSi10Mg

JOM ◽  
2016 ◽  
Vol 68 (3) ◽  
pp. 960-966 ◽  
Author(s):  
Ming Tang ◽  
P. Chris Pistorius ◽  
Sneha Narra ◽  
Jack L. Beuth
Keyword(s):  
Selective Laser Melting ◽  
Rapid Solidification ◽  
Laser Melting

Microstructure, solidification behavior and mechanical properties of Al-Si-Mg-Ti/TiC fabricated by selective laser melting

2020 ◽  
Vol 34 ◽  
pp. 101326 ◽  
Author(s):  
Li Xinwei ◽  
Shi Shi ◽  
Han Shuang ◽  
Hu Xiaogang ◽  
Zhu Qiang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Selective Laser Melting ◽  
Solidification Behavior ◽  
Laser Melting

scholarly journals Influence of the conditions of selective laser melting on evaporation

2018 ◽  
Vol 224 ◽  
pp. 01060 ◽  
Author(s):  
Roman S. Khmyrov ◽  
Cyrill E. Protasov ◽  
Andrey V. Gusarov
Keyword(s):  
Mass Transfer ◽  
Selective Laser Melting ◽  
Coming Out ◽  
Thermal Field ◽  
Mass Transfer Process ◽  
Scanning Speed ◽  
Single Track ◽  
Laser Melting ◽  
Quality Properties ◽  
Kinetics Of

The paper presents the results of optical diagnostics of evaporation and displacement of powder fractions during the formation of a single track in the process of selective laser melting. The velocity of the powder fractions is estimated. It was defined, that an increase in the scanning speed leads to an decrease in the particle coming out rate from the molten pool and the rate at which they are attracted. The results allow evaluating the kinetics of the mass-transfer process during selective laser melting. It was clearly shown the material quality properties after the selective laser melting are strongly influenced by the formed thermal field in the laser-irradiated zone.

Melting and Solidification Behavior of High-Strength Aluminum Alloy during Selective Laser Melting

2018 ◽  
Vol 941 ◽  
pp. 1300-1305
Author(s):  
Hideki Kyogoku ◽  
Kohei Yamamoto ◽  
Toshi Taka Ikeshoji ◽  
Kazuya Nakamura ◽  
Makiko Yonehara
Keyword(s):  
Aluminum Alloy ◽  
Aluminum Alloys ◽  
Selective Laser Melting ◽  
High Speed ◽  
High Strength ◽  
Solidification Cracking ◽  
Solidification Behavior ◽  
Laser Melting ◽  
Scan Speed ◽  
Melting And Solidification

Additive manufacturing (AM) technology has been dramatically attracted attention because of advantages in building free-shaped parts and simplification of manufacturing process. Recently the most relevant alloys, such as TiAl6V4, Inconel 718, AlSi10Mg and so on, are able to manufacture the parts using metal AM technology. However high-strength 2024, 6061 and 7075 aluminum alloys are difficult to fabricate using selective laser melting (SLM) owing to solidification cracking during solidification. In this research, the melting and solidification behaviors of AlSi10Mg alloy during SLM process were observed under various fabrication conditions of laser power and scan speed using a high-speed camera. It was found that the melting and solidification behavior of the alloy is greatly different by the fabrication conditions. And also the mechanism of solidification cracking in 2024 and 6061 aluminum alloys is investigated by the observation of the surface morphology and microstructure of the alloys using OM, SEM and EDS, comparing with Al10SiMg alloy. As a result, crack-free 2024 and 6061 aluminum alloy parts can be obtained by fabrication at the higer enrgy density.

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
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