Features of Melt Gas Atomization and Selective Laser Melting of High-Strength Austenitic Nitrogen-Containing Steel Powders

2020 ◽  
Vol 62 (1-2) ◽  
pp. 76-80
Author(s):  
P. A. Kuznetsov ◽  
I. V. Shakirov ◽  
V. V. Bobyr’ ◽  
A. S. Zhukov ◽  
V. N. Klimov
Keyword(s):  
Selective Laser Melting ◽  
High Strength ◽  
Gas Atomization ◽  
Laser Melting

Properties of aluminum metal matrix composites manufactured by selective laser melting

2021 ◽  
Vol 112 (7) ◽  
pp. 552-564
Author(s):  
Christian Felber ◽  
Florian Rödl ◽  
Ferdinand Haider
Keyword(s):  
Additive Manufacturing ◽  
Aluminum Alloys ◽  
Selective Laser Melting ◽  
Metal Matrix ◽  
High Hardness ◽  
High Strength ◽  
Laser Melting ◽  
Scanning Calorimetry ◽  
Particle Reinforcement ◽  
The Matrix

Abstract The most promising metal processing additive manufacturing technique in industry is selective laser melting, but only a few alloys are commercially available, limiting the potential of this technique. In particular high strength aluminum alloys, which are of great importance in the automotive industry, are missing. An aluminum 2024 alloy, reinforced by Ti-6Al-4V and B4C particles, could be used as a high strength alternative for aluminum alloys. Heat treating can be used to improve the mechanical properties of the metal matrix composite. Dynamic scanning calorimetry shows the formation of Al2Cu precipitates in the matrix instead of the expected Al2CuMg phases due to the loss of magnesium during printing, and precipitation processes are accelerated due to particle reinforcement and additive manufacturing. Strong reactions between aluminum and Ti-6Al-4V are observed in the microstructure, while B4C shows no reaction with the matrix or the titanium. The material shows high hardness, high stiffness, and low ductility through precipitation and particle reinforcement.

scholarly journals Additive Technology Methods for Manufacturing Permanent Magnets

2021 ◽  
Vol 346 ◽  
pp. 01010
Author(s):  
Dmitry Efremov ◽  
Alla Gerasimova ◽  
Nikita Kislykh ◽  
Cristina Shaibel
Keyword(s):  
Selective Laser Melting ◽  
Permanent Magnets ◽  
Magnetic Alloy ◽  
Gas Atomization ◽  
Layer By Layer ◽  
Laser Melting ◽  
Alloy Casting ◽  
Standard Data ◽  
Product Models ◽  
Powder Magnet

The paper presents the results of studying the possibility of using the selective laser melting method for production of permanent magnets. This process allows to manufacture not only product models and prototypes, but also finished functional products by adding material layer by layer and bonding particles and layers to each other. We have considered the application areas of selective laser melting (SLM) based on powders obtained by different methods for the study. In addition, we have analyzed the traditional magnetic alloy casting technology, studied magnetic materials, and compared the powder magnet properties with standard data. We have found that the parameters of powders obtained by gas atomization are qualitatively superior to those of powders obtained using other methods, whereas the resulting magnets meet the requirements for magnets. Based on the 25Kh15KA alloy powder atomized by gas atomization, a SLM plant allows to manufacture permanent magnets with a material density of 7.59–7.55 g/cu.cm, which meets the requirements recommended by the State Standard GOST 24897-81, and to obtain the magnet properties that can be achieved using traditional metallurgical technologies.

Achieving Ti6Al4V alloys with both high strength and ductility via selective laser melting

2019 ◽  
Vol 766 ◽  
pp. 138319 ◽  
Author(s):  
Jiangwei Liu ◽  
Qidong Sun ◽  
Chang'an Zhou ◽  
Xiebin Wang ◽  
Hu Li ◽  
...  
Keyword(s):  
Selective Laser Melting ◽  
High Strength ◽  
Laser Melting ◽  
Strength And Ductility

Fabrication of high-strength Mg-Gd-Zn-Zr alloy via selective laser melting

2020 ◽  
Vol 165 ◽  
pp. 110377 ◽  
Author(s):  
Qingchen Deng ◽  
Yujuan Wu ◽  
Yuanhang Luo ◽  
Ning Su ◽  
Xiaoyu Xue ◽  
...  
Keyword(s):  
Selective Laser Melting ◽  
High Strength ◽  
Laser Melting ◽  
Zr Alloy

Fabrication and heat treatment of high strength Al-Cu-Mg alloy processed using selective laser melting

2016 ◽  
Author(s):  
Hu Zhang ◽  
Haihong Zhu ◽  
Xiaojia Nie ◽  
Ting Qi ◽  
Zhiheng Hu ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Selective Laser Melting ◽  
High Strength ◽  
Mg Alloy ◽  
Laser Melting

scholarly journals Selective laser melting of high-strength, low-modulus Ti–35Nb–7Zr–5Ta alloy

Materialia ◽  
2020 ◽  
Vol 14 ◽  
pp. 100941 ◽  
Author(s):  
Raghunandan Ummethala ◽  
Phani S. Karamched ◽  
Sokkalingam Rathinavelu ◽  
Neera Singh ◽  
Akash Aggarwal ◽  
...  
Keyword(s):  
Selective Laser Melting ◽  
High Strength ◽  
Laser Melting ◽  
Low Modulus
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