Additive manufactured AlSi10Mg samples using Selective Laser Melting (SLM): Microstructure, high cycle fatigue, and fracture behavior

2012 ◽  
Vol 34 ◽  
pp. 159-169 ◽  
Author(s):  
Erhard Brandl ◽  
Ulrike Heckenberger ◽  
Vitus Holzinger ◽  
Damien Buchbinder
Keyword(s):  
Selective Laser Melting ◽  
Fracture Behavior ◽  
High Cycle Fatigue ◽  
Cycle Fatigue ◽  
Laser Melting ◽  
Fatigue And Fracture

scholarly journals Very-High-Cycle Fatigue Behavior of Inconel 718 Alloy Fabricated by Selective Laser Melting at Elevated Temperature

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1001
Author(s):  
Zongxian Song ◽  
Wenbin Gao ◽  
Dongpo Wang ◽  
Zhisheng Wu ◽  
Meifang Yan ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Selective Laser Melting ◽  
Fatigue Resistance ◽  
Inconel 718 ◽  
High Cycle Fatigue ◽  
Cycle Fatigue ◽  
Laser Melting ◽  
Inconel 718 Alloy ◽  
Very High Cycle Fatigue ◽  
Very High

This study investigates the very-high-cycle fatigue (VHCF) behavior at elevated temperature (650 °C) of the Inconel 718 alloy fabricated by selective laser melting (SLM). The results are compared with those of the wrought alloy. Large columnar grain with a cellular structure in the grain interior and Laves/δ phases precipitated along the grain boundaries were exhibited in the SLM alloy, while fine equiaxed grains were present in the wrought alloy. The elevated temperature had a minor effect on the fatigue resistance in the regime below 108 cycles for the SLM alloy but significantly reduced the fatigue strength in the VHCF regime above 108 cycles. Both the SLM and wrought specimens exhibited similar fatigue resistance in the fatigue life regime of fewer than 107–108 cycles at elevated temperature, and the surface initiation mechanism was dominant in both alloys. In a VHCF regime above 107–108 cycles at elevated temperature, the wrought material exhibited slightly better fatigue resistance than the SLM alloy. All fatigue cracks are initiated from the internal defects or the microstructure discontinuities. The precipitation of Laves and δ phases is examined after fatigue tests at high temperatures, and the effect of microstructure on the formation and the propagation of the microstructural small cracks is also discussed.

High cycle fatigue and fracture behavior of Ti-5Al-5Mo-5V-3Cr alloy with BASCA and double aging treatments

2016 ◽  
Vol 658 ◽  
pp. 203-209 ◽  
Author(s):  
Leonardo Contri Campanelli ◽  
Paulo Sergio Carvalho Pereira da Silva ◽  
Claudemiro Bolfarini
Keyword(s):  
Fracture Behavior ◽  
High Cycle Fatigue ◽  
Cycle Fatigue ◽  
Double Aging ◽  
Fatigue And Fracture

Fracture Mechanisms in High-Cycle Fatigue of Selective Laser Melted Ti-6Al-4V

2014 ◽  
Vol 627 ◽  
pp. 125-128 ◽  
Author(s):  
Marco Simonelli ◽  
Y.Y. Tse ◽  
C. Tuck
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
Selective Laser Melting ◽  
High Cycle Fatigue ◽  
Fatigue Performance ◽  
Fracture Mechanisms ◽  
Cycle Fatigue ◽  
Laser Melting ◽  
Manufacturing Technique ◽  
Metal Additive

Selective laser melting (SLM) is an attractive metal additive manufacturing technique that can create functional finished components. The microstructure that originates from SLM, however, differs in many aspects from that obtained from conventional manufacturing. In addition, the microstructure-mechanical properties relationship is not yet fully understood. In this research, the high-cycle fatigue performance of SLM Ti-6Al-4V was studied. The dominant fracture mechanisms were reported and discussed in relation to the microstructure of the specimens.

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