Effect of heat treatments on the fatigue crack growth properties of an aluminum casting alloy. (Rotating bending of squeeze-cast aluminum alloy AC4CH).

Abstract Aluminum casting alloy compositions parallel those of wrought alloys in many respects. However, because work hardening plays no significant role in the development of casting properties, the use and purposes of some alloying elements differ in casting alloys versus wrought alloys. This chapter provides information on specifications and widely used designation systems and alloy nomenclature for aluminum casting alloys. It describes the composition of seven basic families of aluminum casting alloys: aluminum-copper, aluminum-silicon-copper, aluminum-silicon, aluminum-silicon-magnesium, aluminum-magnesium, aluminum-zinc-magnesium, and aluminum-tin. The chapter discusses the effects of alloying elements on the properties of cast aluminum. It provides information on various alloys that are grouped with respect to their applications or major performance characteristics.

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Slurry erosion-corrosion characteristics of squeeze cast aluminum alloy-aluminum borate composite

Materials and Corrosion ◽

10.1002/(sici)1521-4176(199904)50:4<205::aid-maco205>3.0.co;2-s ◽

1999 ◽

Vol 50 (4) ◽

pp. 205-212 ◽

Cited By ~ 4

Author(s):

J. P. Tu ◽

C. L. Li ◽

H. X. Zhao ◽

M. Matsumura

Keyword(s):

Aluminum Alloy ◽

Cast Aluminum Alloy ◽

Aluminum Borate ◽

Cast Aluminum ◽

Slurry Erosion ◽

Squeeze Cast ◽

Erosion Corrosion

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.264-265.706 ◽

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.

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