Thermal physical and mechanical properties of W-Cu alloy fabricated via selctive laser melting

2016 ◽  
Author(s):  
Anru Yan ◽  
Zhiyong Wang ◽  
Zhihong Ma
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Laser Melting ◽  
Cu Alloy

Investigation of Physical and Mechanical Properties of Samples Grown by Selective Laser Melting of Iron Powder

2019 ◽  
Vol 11 ◽  
pp. 95-100
Author(s):  
Ivan Shakirov ◽  
Anton Zhukov ◽  
Pavel Kuznetsov ◽  
Vitaliy Bobyr' ◽  
Tatiana Fedina ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Iron Powder ◽  
Selective Laser Melting ◽  
Physical And Mechanical Properties ◽  
Laser Melting

scholarly journals Densification, Microstructure, and Mechanical Properties of Additively Manufactured 2124 Al–Cu Alloy by Selective Laser Melting

Materials ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 4423
Author(s):  
Junwang Deng ◽  
Chao Chen ◽  
Wei Zhang ◽  
Yunping Li ◽  
Ruidi Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Selective Laser Melting ◽  
Hollow Structure ◽  
Base Plate ◽  
Scanning Speed ◽  
Processing Parameters ◽  
Laser Melting ◽  
Cu Alloy ◽  
Microstructure And Mechanical Properties ◽  
Hatch Spacing

Owing to its high specific strength and low density, Al–Cu alloys have been extensively used in aerospace for lightweight components. Additive manufacturing techniques such as selective laser melting, which offers geometric freedom, is suitable for topology-optimized designs. In this study, the effect of processing parameters on the densification, microstructure, and mechanical properties of additively manufactured Al–Cu alloy 2124 by selective laser melting was investigated. Parameters such as laser power, scanning speed, hatch spacing, and use of a support were studied. The results revealed that a grille support with a hollow structure played a resistant role in the transfer of heat to the base plate, thus reducing the temperature gradient and lessening cracks in the building part. Smaller hatch spacing was beneficial for the achievement of a higher relative density and strength due to track re-melting and liquid phase backflow, which could fill cracks and pores during the building process. An ultimate tensile strength as high as 300 MPa of the vertically built sample was obtained at optimized processing parameters, while the elongation was relatively limited. Moreover, columnar grains were found to be responsible for the anisotropy of the mechanical properties of the as-printed 2124 alloy.

scholarly journals Microstructure, Mechanical Properties, and Fatigue Fracture Characteristics of High-Fracture-Resistance Selective Laser Melting Al-Ni-Cu Alloys

Metals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 87
Author(s):  
Kai-Chieh Chang ◽  
Jun-Ren Zhao ◽  
Fei-Yi Hung
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Selective Laser Melting ◽  
Treatment Time ◽  
High Temperature Stability ◽  
Laser Melting ◽  
High Fracture ◽  
Cu Alloy ◽  
Cu Alloys ◽  
Melting Pool

Al-Ni-Cu alloys are used in energy, automotive, and aerospace industries because of their excellent mechanical properties, corrosion resistance, and high-temperature stability. In this study, Al-Ni-Cu alloy powder was subjected to selective laser melting (SLM). The SLM Al-Ni-Cu alloy was manufactured using appropriate printing parameters, and its properties were investigated. The results revealed that the As-printed material exhibited a typical melting pool stack structure, with an ultimate tensile strength of 725 MPa but a high brittleness effect (low ductility). After traditional heat treatment, the melting pool structure did not completely disappear. The strengthening phase Al7Cu23Ni precipitated from the boundary of the melting pools; thus, the Al-Ni-Cu alloy maintained high strength (>500 MPa) and considerably increased ductility (>10%). The SLM Al-Ni-Cu alloy has considerable industrial application potential; therefore, increasing the heat treatment temperature or extending the heat treatment time in the future works can promote the decomposition of the melting pool boundary and solve the problem related to the aggregation behavior of the precipitation phase, thereby improving the fatigue life of the alloy.

Predictive models for physical and mechanical properties of Ti6Al4V produced by Selective Laser Melting

2016 ◽  
Vol 663 ◽  
pp. 181-192 ◽  
Author(s):  
F. Bartolomeu ◽  
S. Faria ◽  
O. Carvalho ◽  
E. Pinto ◽  
N. Alves ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Selective Laser Melting ◽  
Predictive Models ◽  
Physical And Mechanical Properties ◽  
Laser Melting
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