Anisotropic high cycle fatigue property of Sc and Zr-modified Al-Mg alloy fabricated by laser powder bed fusion

2021 ◽  
pp. 102514
Author(s):  
Zehao Qin ◽  
Nan Kang ◽  
Mohamed El Mansori ◽  
Zihong Wang ◽  
Haoxiang Wang ◽  
...  
Keyword(s):  
High Cycle Fatigue ◽  
Fatigue Property ◽  
Mg Alloy ◽  
Powder Bed Fusion ◽  
Cycle Fatigue ◽  
Laser Powder Bed Fusion ◽  
Powder Bed

scholarly journals High cycle fatigue life estimation of AlSi10Mg processed by laser powder bed fusion

2018 ◽  
Vol 188 ◽  
pp. 03015 ◽  
Author(s):  
Even W. Hovig ◽  
Amin S. Azar ◽  
Martin F. Sunding ◽  
Knut Sørby ◽  
Mohammed M'hamdi ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Stress Concentration ◽  
Surface Properties ◽  
High Cycle Fatigue ◽  
Material Surface ◽  
Powder Bed Fusion ◽  
Cycle Fatigue ◽  
Laser Powder Bed Fusion ◽  
Element Analysis ◽  
Powder Bed

Fatigue life is known to be dependent on the surface properties of the material. Surface roughness provokes local stress concentration and cause crack initiation even at minute cyclic loads. In laser powder bed fusion, the as-built surfaces show variable roughness depending on the orientation of the specimens with respect to the build plate. In order to analyse the effect of build angle on surface properties, flat tensile specimens were produced from an AlSi10Mg alloy in a Concept Laser M2 Cusing machine. Seven specimens were arranged from flat to perpendicular with respect to the build plate at 15° intervals. The as-built surface topography of each specimen was characterised by white light interferometry. Two methods for calculating the stress concentration factor for high cycle fatigue simulation were developed. The presence of subsurface porosity was a crucial factor in expanding the stress concentration as demonstrated by finite element analysis.

scholarly journals High cycle fatigue life estimation of materials processed by laser powder bed fusion

2019 ◽  
Vol 42 (7) ◽  
pp. 1454-1466 ◽  
Author(s):  
Even W. Hovig ◽  
Amin S. Azar ◽  
Martin F. Sunding ◽  
Erik Andreassen ◽  
Knut Sørby
Keyword(s):  
Fatigue Life ◽  
High Cycle Fatigue ◽  
Powder Bed Fusion ◽  
Cycle Fatigue ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Life Estimation ◽  
Fatigue Life Estimation

Mechanisms driving high-cycle fatigue life of as-built Inconel 718 processed by laser powder bed fusion

2019 ◽  
Vol 761 ◽  
pp. 137993 ◽  
Author(s):  
Dillon S. Watring ◽  
Kristen C. Carter ◽  
Dustin Crouse ◽  
Bart Raeymaekers ◽  
Ashley D. Spear
Keyword(s):  
Fatigue Life ◽  
Inconel 718 ◽  
High Cycle Fatigue ◽  
Powder Bed Fusion ◽  
Cycle Fatigue ◽  
Laser Powder Bed Fusion ◽  
Powder Bed
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