Selective laser melting of TiC/H13 steel bulk-form nanocomposites with variations in processing parameters

2017 ◽  
Vol 7 (1) ◽  
pp. 84-89 ◽  
Author(s):  
Bandar AlMangour ◽  
Franklin Yu ◽  
Jenn-Ming Yang ◽  
Dariusz Grzesiak
Keyword(s):  
Selective Laser Melting ◽  
Processing Parameters ◽  
Laser Melting ◽  
H13 Steel ◽  
Image Position

Abstract

Understanding processing parameters affecting residual stress in selective laser melting of Inconel 718 through numerical modeling

2019 ◽  
Vol 34 (08) ◽  
pp. 1395-1404 ◽  
Author(s):  
Jia Song ◽  
Liang Zhang ◽  
Wenheng Wu ◽  
Beibei He ◽  
Xiaoqing Ni ◽  
...  
Keyword(s):  
Residual Stress ◽  
Numerical Modeling ◽  
Selective Laser Melting ◽  
Inconel 718 ◽  
Processing Parameters ◽  
Laser Melting ◽  
Image Position

Abstract

Effect of processing parameters on thermal behavior and related density in GH3536 alloy manufactured by selective laser melting

2019 ◽  
Vol 34 (08) ◽  
pp. 1405-1414
Author(s):  
Liang Zhang ◽  
Jia Song ◽  
Wenheng Wu ◽  
Zhibin Gao ◽  
Beibei He ◽  
...  
Keyword(s):  
Thermal Behavior ◽  
Selective Laser Melting ◽  
Processing Parameters ◽  
Laser Melting ◽  
Image Position

Abstract

scholarly journals High Bending Strength Hypereutectic Al-22Si-0.2Fe-0.1Cu-Re Alloy Fabricated by Selective Laser Melting

Metals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 528
Author(s):  
Chunyue Yin ◽  
Zhehao Lu ◽  
Xianshun Wei ◽  
Biao Yan ◽  
Pengfei Yan
Keyword(s):  
Selective Laser Melting ◽  
Bending Strength ◽  
Primary Silicon ◽  
Processing Parameters ◽  
Powder Materials ◽  
Laser Melting ◽  
Maximum Value ◽  
Fine Microstructure ◽  
Average Size ◽  
Al Matrix

The objective of the study is to investigate the corresponding microstructure and mechanical properties, especially bending strength, of the hypereutectic Al-Si alloy processed by selective laser melting (SLM). Almost dense Al-22Si-0.2Fe-0.1Cu-Re alloy is fabricated from a novel type of powder materials with optimized processing parameters. Phase analysis of such Al-22Si-0.2Fe-0.1Cu-Re alloy shows that the solubility of Si in Al matrix increases significantly. The fine microstructure can be observed, divided into three zones: fine zones, coarse zones, and heat-affected zones (HAZs). Fine zones are directly generated from the liquid phase with the characteristic of petaloid structures and bulk Al-Si eutectic. Due to the fine microstructure induced by the rapid cooling rate of SLM, the primary silicon presents a minimum average size of ~0.5 μm in fine zones, significantly smaller than that in the conventional produced hypereutectic samples. Moreover, the maximum value of Vickers hardness reaches ~170 HV0.2, and bending strength increases to 687.70 MPa for the as-built Al-22Si-0.2Fe-0.1Cu-Re alloys parts, which is much higher than that of cast counterparts. The formation mechanism of this fine microstructure and the enhancement reasons of bending strength are also discussed.

Effects of processing parameters on rapid manufacturing 90W–7Ni–3Fe parts via selective laser melting

2010 ◽  
Vol 53 (4) ◽  
pp. 310-317 ◽  
Author(s):  
R. D. Li ◽  
J. H. Liu ◽  
Y. S. Shi ◽  
L. Zhang ◽  
M. Z. Du
Keyword(s):  
Selective Laser Melting ◽  
Processing Parameters ◽  
Rapid Manufacturing ◽  
Laser Melting

Mechanical Behaviour of Gas Nitrided Ti6Al4V Bars Produced by Selective Laser Melting

2016 ◽  
Vol 704 ◽  
pp. 225-234 ◽  
Author(s):  
Peter Franz ◽  
Aamir Mukhtar ◽  
Warwick Downing ◽  
Graeme Smith ◽  
Ben Jackson
Keyword(s):  
Heat Treatment ◽  
Selective Laser Melting ◽  
Nitrided Layer ◽  
Xrd Analysis ◽  
Compound Layer ◽  
Processing Parameters ◽  
Heat Treatments ◽  
Laser Melting ◽  
Gas Nitriding ◽  
Heat Treated

Gas atomized Ti-6Al-4V (Ti64) alloy powder was used to prepare distinct designed geometries with different properties by selective laser melting (SLM). Several heat treatments were investigated to find suitable processing parameters to strengthen (specially to harden) these parts for different applications. The results showed significant differences between tabulated results for heat treated billet Ti64 and SLM produced Ti64 parts, while certain mechanical properties of SLM Ti64 parts could be improved by different heat treatments using different processing parameters. Most heat treatments performed followed the trends of a reduction in tensile strength while improving ductility compared with untreated SLM Ti64 parts.Gas nitriding [GN] (diffusion-based thermo-chemical treatment) has been combined with a selected heat treatment for interstitial hardening. Heat treatment was performed below β-transus temperature using minimum flow of nitrogen gas with a controlled low pressure. The surface of the SLM produced Ti64 parts after gas nitriding showed TiN and Ti2N phases (“compound layer”, XRD analysis) and α (N) – Ti diffusion zones as well as high values of micro-hardness as compared to untreated SLM produced Ti64 parts. The microhardness profiles on cross section of the gas nitrided SLM produced samples gave information about the i) microhardness behaviour of the material, and ii) thickness of the nitrided layer, which was investigated using energy dispersive spectroscopy (EDS) and x-ray elemental analysis. Tensile properties of the gas nitrided Ti64 bars produced by SLM under different conditions were also reported.

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