scholarly journals Comparison of Microstructure and Mechanical Properties of Scalmalloy® Produced by Selective Laser Melting and Laser Metal Deposition

Materials ◽  
2017 ◽  
Vol 11 (1) ◽  
pp. 17 ◽  
Author(s):  
Mustafa Awd ◽  
Jochen Tenkamp ◽  
Markus Hirtler ◽  
Shafaqat Siddique ◽  
Markus Bambach ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Selective Laser Melting ◽  
Metal Deposition ◽  
Laser Metal Deposition ◽  
Laser Melting ◽  
Microstructure And Mechanical Properties

Comparative study of structural phase condition and mechanical properties of Ni–Cr(X) и Fe–Cr(Х) heat-resistant alloys obtained using additive technologies

2018 ◽  
pp. 76-86
Author(s):  
Yu. R. Kolobov ◽  
A. N. Prokhorov ◽  
S. S. Manokhin ◽  
A. Yu. Tokmacheva-Kolobova ◽  
D. I. Serebryakov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Comparative Study ◽  
Selective Laser Melting ◽  
Metal Deposition ◽  
Additive Technologies ◽  
Laser Metal Deposition ◽  
Compression Tests ◽  
Direct Metal Laser Sintering ◽  
Laser Melting ◽  
Iron Based

The comparative study covers the features of formation, thermal stability of structure and mechanical properties of heatresistant Ni and Fe based alloys obtained using additive technologies (AT) by direct metal laser sintering, selective laser melting. It is found that alloys obtained by direct metal laser sintering have a cellular structure formed with small pores up to 200 nm in size, in contrast to alloys obtained by selective laser melting having elements with a globular and lamellar morphology and not completely melted areas as well as large pores about 5 μm in size. The study reveals a possible effect of nanophase hardening due to the presence of nanosized particles of chromium silicides in the material. A comparative analysis of the mechanical properties of studied materials is carried out. It is shown that the iron-based alloys have higher strength and lower ductility compared to nickel alloys. All studied samples obtained by selective laser melting demonstrate higher strength characteristics in comparison with alloys obtained by laser metal deposition. As a result of short-term annealing at a temperature of 900–1000 °C for 1 h leads to a significant reduction in the plasticity and strength of iron-based AT alloys during tensile and compression tests at room and elevated temperatures. During compression tests at t = 900 °C, iron-and nickel-based alloys obtained by laser metal deposition have similar strength characteristics. Unlike iron-based alloys, additional annealing of nickel-based AT alloys has virtually no impact on its strength properties.

Effect of TiB2 Content on Microstructure and Mechanical Properties of TiB/Ti-6Al-4V Composites Formed by Selective Laser Melting

2021 ◽  
Vol 48 (6) ◽  
pp. 0602102
Author(s):  
钦兰云 Qin Lanyun ◽  
门继华 Men Jihua ◽  
赵朔 Zhao Shuo ◽  
杨光 Yang Guang ◽  
王伟 Wang Wei ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Selective Laser Melting ◽  
Laser Melting ◽  
Microstructure And Mechanical Properties

Influence of Heat Treatment on Microstructure and Mechanical Properties of Selective Laser Melted TiAl6V4 Alloy

2018 ◽  
Vol 284 ◽  
pp. 615-620 ◽  
Author(s):  
R.M. Baitimerov ◽  
P.A. Lykov ◽  
L.V. Radionova
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Selective Laser Melting ◽  
Room Temperature ◽  
Base Alloy ◽  
Tensile Tests ◽  
Heat Treatments ◽  
Laser Melting ◽  
Microstructure And Mechanical Properties ◽  
Treatment Procedures

TiAl6V4 titanium base alloy is widely used in aerospace and medical industries. Specimens for tensile tests from TiAl6V4 with porosity less than 0.5% was fabricated by selective laser melting (SLM). Specimens were treated using two heat treatment procedures, third batch of specimens was tested in as-fabricated statement after machining. Tensile tests were carried out at room temperature. Microstructure and mechanical properties of SLM fabricated TiAl6V4 after different heat treatments were investigated.

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