scholarly journals Thickness Effect of Interlayer on Fatigue Behavior and Fatigue Fracture A5052 Mechanisms in Aluminum Alloy with DLC/Thermally Sprayed WC-12Co Hybrid Coatings

2013 ◽  
Vol 62 (12) ◽  
pp. 738-743 ◽  
Author(s):  
Toshifumi KAKIUCHI ◽  
Yoshihiko UEMATSU ◽  
Makoto TAKEKAWA ◽  
Takema TERATANI ◽  
Yoshifumi KOBAYASHI ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Fracture ◽  
Fatigue Behavior ◽  
Thickness Effect ◽  
Hybrid Coatings ◽  
Thermally Sprayed

420 Thickness Effect of Inter Layer on Fatigue Behavior in A5052 Aluminum Alloy with DLC/Thermally Sprayed WC-12Co Hybrid Coatings

2012 ◽  
Vol 2012.61 (0) ◽  
pp. _420-1_-_420-2_
Author(s):  
MAKOTO Takekawa ◽  
Yoshihiko UEMATSU ◽  
Toshifumi KAKIUCHI ◽  
Takema TERATANI ◽  
Yoshifumi KOBAYASHI ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Behavior ◽  
Thickness Effect ◽  
Hybrid Coatings ◽  
Thermally Sprayed

scholarly journals G030094 Fatigue Behavior of A5052 Aluminum Alloy with DLC/Thermally Sprayed WC-12Co Hybrid Coatings

2011 ◽  
Vol 2011 (0) ◽  
pp. _G030094-1-_G030094-4
Author(s):  
Toshifumi KAKIUCHI ◽  
Yoshihiko UEMATSU ◽  
Makoto TAKEKAWA ◽  
Takema TERATANI ◽  
Yoshifumi KOBAYASHI ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Behavior ◽  
Hybrid Coatings ◽  
Thermally Sprayed

Fatigue Behavior and Damage Mechanism of a Cast Aluminum Alloy in Very High Cycle Regime

2011 ◽  
Vol 264-265 ◽  
pp. 706-711
Author(s):  
Hong Qian Xue ◽  
E. Bayraktar ◽  
Claude Bathias
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Crack ◽  
Fatigue Fracture ◽  
Loading Condition ◽  
Fatigue Behavior ◽  
Axial Loading ◽  
Cast Aluminum Alloy ◽  
Cast Aluminum ◽  
Fatigue Fracture Surface ◽  
Very High

An improved understanding of fatigue behavior of a cast aluminum alloy (2-AS5U3G-Y35) in very high cycle regime was developed through ultrasonic fatigue test in axial and torsion loading, cyclic loading in axial and torsion at 35 Hz and 20kHz with R=-1 was used respectively to demonstrate the effect of loading condition. S-N curves obtained show that fatigue failure occurred in range of 105 -1010 cycles in axial or torsion loading, the asymptote of S-N curve is inclined gently, but no fatigue limit under torsion and axial loading condition. Fatigue fracture surface shows fatigue crack essentially initiated from the surface of the specimens subjected to cyclic torsion load, it is different from the fatigue fracture characteristic in axial loading which fatigue crack initiate from subsurface defect in very high cycle regime. Fatigue initiation is on the maximum shear plane, the overall crack orientation is observed on a typical spiral 45° to the fracture plane, which is the maximum principle stress plane, however, shear strip are very clear in the torsion fatigue fracture surface, the torsion fracture is actually in shear fracture.

Fatigue Behavior of A5052 Aluminum Alloy with DLC/Thermally Sprayed WC-12Co Hybrid Coatings

2012 ◽  
Vol 538-541 ◽  
pp. 1693-1696 ◽  
Author(s):  
Y. Uematsu ◽  
T. Kakiuchi ◽  
Y. Kobayashi ◽  
Y. Harada
Keyword(s):  
Fatigue Behavior ◽  
Single Layer ◽  
Fatigue Tests ◽  
Hybrid Coating ◽  
Hybrid Coatings ◽  
Al Alloy ◽  
Dlc Film ◽  
Rotating Bending Fatigue ◽  
Rotating Bending ◽  
Thermally Sprayed

Rotating bending fatigue tests had been performed using A5052 aluminum (Al) alloy with the hybrid coatings which consisted of tungsten carbide including 12% cobalt (WC-12Co) interlayer and diamond-like carbon (DLC) film, in order to investigate the effect of hybrid coating on the fatigue behavior. The WC-12Co layer was thermally sprayed by a high velocity oxygen fuel (HVOF) method on A5052 with the thickness of 70, 120 or 170μm. Subsequently, the DLC film was deposited with the thickness of 15μm. The fatigue strengths of the specimens with WC-12Co single layer were higher than those of the substrate and increased with increasing the thickness of WC-12Co layer. The fatigue strengths of the specimens with the hybrid coating of 70μm WC-12Co interlayer and 15μm DLC film were better than those of the specimen with 70μm WC-12Co single layer. Thus the hybrid coating structure was effective to improve fatigue strengths. However the beneficial effect of hybrid coating was not apparent in the specimens with thicker WC-12Co interlayer of 120 and 170μm.

Effect of the welding profile generated by the modified indirect electric arc technique on the fatigue behavior of 6061-T6 aluminum alloy

2010 ◽  
Vol 527 (7-8) ◽  
pp. 2057-2064 ◽  
Author(s):  
R.R. Ambriz ◽  
G. Mesmacque ◽  
A. Ruiz ◽  
A. Amrouche ◽  
V.H. López
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Behavior ◽  
Electric Arc

Fatigue behavior of a thermally sprayed low carbon steel coating

2000 ◽  
Vol 277 (1-2) ◽  
pp. 176-182 ◽  
Author(s):  
Pi Lin Liu ◽  
Jian Ku Shang ◽  
Oludele O Popoola
Keyword(s):  
Carbon Steel ◽  
Fatigue Behavior ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Steel Coating ◽  
Thermally Sprayed

The Effect of HFPD Thermally Sprayed WC-Co Coatings on the Fatigue Behavior and Deformation of Al 2024-T4

2000 ◽  
Author(s):  
A. Ibrahim ◽  
C.C. Berndt
Keyword(s):  
High Frequency ◽  
High Cycle Fatigue ◽  
Fatigue Behavior ◽  
Cycle Fatigue ◽  
Pulse Detonation ◽  
Deformation Behaviors ◽  
Life Distributions ◽  
Thermally Sprayed ◽  
Al 2024 ◽  
Frequency Pulse

Abstract The effect of high frequency pulse detonation (HFPD) and HVOF thermally sprayed WC-Co coatings on the high cycle fatigue (HCF) behavior of 2024-T4 aluminum was investigated. The fatigue life distributions of specimens in the polished and coated conditions are presented as a function of the probability of failure. The monotonic and cyclic deformation behaviors of the as-received and as-coated specimens were investigated. The conclusions show that, (i) the HFPD sprayed specimens exhibited slightly higher fatigue lives compared to the uncoated specimens, (ii) the HVOF sprayed specimens exhibited significantly higher fatigue lives compared to the uncoated specimens, and (iii) the as-coated specimen was cyclically stable.

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