Process parameters and interfacial characterization of Ti/Al multi-material structure fabricated by selective laser melting

2021 ◽  
Author(s):  
Xuping Wu ◽  
Dongyun Zhang ◽  
Ziming Kang ◽  
Tingting Huang ◽  
Xingtao Feng
Keyword(s):  
Selective Laser Melting ◽  
Process Parameters ◽  
Material Structure ◽  
Laser Melting

Parameter optimization of aluminum alloy thin structures obtained by Selective Laser Melting

MRS Advances ◽  
2019 ◽  
Vol 4 (55-56) ◽  
pp. 2997-3005
Author(s):  
Malena Ley Bun Leal ◽  
Barbara Bermudez-Reyes ◽  
Patricia del Carmen Zambrano Robledo ◽  
Omar Lopez-Botello
Keyword(s):  
Selective Laser Melting ◽  
Process Parameters ◽  
Orthogonal Design ◽  
Processing Parameters ◽  
Future Research ◽  
Laser Melting ◽  
Complex Process ◽  
The Relationship ◽  
Fabrication Parameters

ABSTRACTSelective Laser Melting (SLM) involves numerous fabrication parameters, the interaction between those parameters determine the final characteristics of the resulting part and because of the latter, it is considered a complex process. Low-density components is one of the main issues of the SLM process, due to the incorrect selection of process parameters. These defects are undesired in high specialized applications (i.e. aerospace, aeronautic and medical industries). Therefore, the characterization of the defects (pores) found in aluminum parts manufacture by SLM and the relationship with fabrication parameters was performed. A robust orthogonal design of experiments was implemented to determine process parameters, and then parts were manufactured in SLM. Relative density of the samples was then characterized using the Archimedes principle and microscopy; the data was then statistically analyzed in order to determine the optimal process parameters. The main purpose of the present research was to establish the best processing parameters of an in-house SLM system, as well as to characterize the pore geometry in order to fully eliminate pores in a future research.

Influence mechanism of process parameters on the interfacial characterization of selective laser melting 316L/CuSn10

2020 ◽  
Vol 792 ◽  
pp. 139316
Author(s):  
Jie Chen ◽  
Yongqiang Yang ◽  
Changhui Song ◽  
Di Wang ◽  
Shibiao Wu ◽  
...  
Keyword(s):  
Selective Laser Melting ◽  
Process Parameters ◽  
Laser Melting ◽  
Influence Mechanism

The Energy Density as a Reliable Parameter for Characterization of Selective Laser Melting of Various Alloys

2019 ◽  
Vol 946 ◽  
pp. 972-977
Author(s):  
P.A. Lykov
Keyword(s):  
Energy Density ◽  
Selective Laser Melting ◽  
Process Parameters ◽  
Laser Melting ◽  
Reliable Parameter

Various "energy density" parameters are used very often for comparison of fabrication modes for Selective Laser Melting (SLM) technology. Each SLM mode is determined by a number of process parameters. In this paper the energy density was considered critically as a reliable parameter for characterization of Selective Laser Melting of four various alloys on one SLM machine, on the example of fabrication of cubic specimen. The results obtained show that the energy density can be used for approximate comparison of SLM modes.

scholarly journals Effect of Process Parameters and High-Temperature Preheating on Residual Stress and Relative Density of Ti6Al4V Processed by Selective Laser Melting

Materials ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 930 ◽  
Author(s):  
Martin Malý ◽  
Christian Höller ◽  
Mateusz Skalon ◽  
Benjamin Meier ◽  
Daniel Koutný ◽  
...  
Keyword(s):  
Residual Stress ◽  
High Temperature ◽  
Residual Stresses ◽  
Relative Density ◽  
Selective Laser Melting ◽  
Process Parameters ◽  
Stress Reduction ◽  
Laser Melting ◽  
Preheating Temperature ◽  
Laser Velocity

The aim of this study is to observe the effect of process parameters on residual stresses and relative density of Ti6Al4V samples produced by Selective Laser Melting. The investigated parameters were hatch laser power, hatch laser velocity, border laser velocity, high-temperature preheating and time delay. Residual stresses were evaluated by the bridge curvature method and relative density by the optical method. The effect of the observed process parameters was estimated by the design of experiment and surface response methods. It was found that for an effective residual stress reduction, the high preheating temperature was the most significant parameter. High preheating temperature also increased the relative density but caused changes in the chemical composition of Ti6Al4V unmelted powder. Chemical analysis proved that after one build job with high preheating temperature, oxygen and hydrogen content exceeded the ASTM B348 limits for Grade 5 titanium.

Effect of Process Parameters on the Deformation of Selective Laser Melting

2020 ◽  
Vol 57 (5) ◽  
pp. 051403
Author(s):  
吴懋亮 Wu Maoliang ◽  
孙翰霆 Sun Hanting ◽  
孙玄锴 Sun Xuankai ◽  
刘中俊 Liu Zhongjun ◽  
李汝润 Li Rurun
Keyword(s):  
Selective Laser Melting ◽  
Process Parameters ◽  
Laser Melting

Characterization of laser spatter and condensate generated during the selective laser melting of 304L stainless steel powder

2020 ◽  
Vol 31 ◽  
pp. 100904 ◽  
Author(s):  
Austin T. Sutton ◽  
Caitlin S. Kriewall ◽  
Ming C. Leu ◽  
Joseph W. Newkirk ◽  
Ben Brown
Keyword(s):  
Stainless Steel ◽  
Selective Laser Melting ◽  
Steel Powder ◽  
Stainless Steel Powder ◽  
304L Stainless Steel ◽  
Laser Melting

Effect of selective laser melting process parameters on microstructural and mechanical properties of TiC–NiCr cermet

2020 ◽  
Vol 46 (18) ◽  
pp. 28749-28757 ◽  
Author(s):  
Atefeh Aramian ◽  
Zohreh Sadeghian ◽  
Seyed Mohammad Javad Razavi ◽  
Konda Gokuldoss Prashanth ◽  
Filippo Berto
Keyword(s):  
Mechanical Properties ◽  
Selective Laser Melting ◽  
Process Parameters ◽  
Melting Process ◽  
Laser Melting ◽  
Selective Laser Melting Process
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