CASTING DEFECTS AND THE FATIGUE BEHAVIOUR OF AN ALUMINIUM CASTING ALLOY

1990 ◽  
Vol 13 (3) ◽  
pp. 213-227 ◽  
Author(s):  
M. J. Couper ◽  
A. E. Neeson ◽  
J. R. Griffiths
Keyword(s):  
Fatigue Behaviour ◽  
Casting Defects ◽  
Casting Alloy ◽  
Aluminium Casting ◽  
Aluminium Casting Alloy

scholarly journals Studies on JIS AC5A aluminium casting alloy

1963 ◽  
Vol 13 (2) ◽  
pp. 70-90
Author(s):  
Toshio ISOBE ◽  
Akira HANADA ◽  
Hirosada KAWARABAYASHI
Keyword(s):  
Casting Alloy ◽  
Aluminium Casting ◽  
Aluminium Casting Alloy

Silicon segregation in aluminium casting alloy

2000 ◽  
Vol 16 (2) ◽  
pp. 125-128 ◽  
Author(s):  
L. Snugovsky ◽  
J.F. Major ◽  
D.D. Perovic ◽  
J.W. Rutter
Keyword(s):  
Casting Alloy ◽  
Aluminium Casting ◽  
Aluminium Casting Alloy

scholarly journals Influence of Surface Finish and Porosity on the Fatigue behaviour of A356 Aluminium Casting Alloy

2018 ◽  
Vol 165 ◽  
pp. 14007
Author(s):  
Raquel Hidalgo ◽  
Jon Ander Esnaola ◽  
Miren Larrañaga ◽  
Iñigo Llavori ◽  
Nuria Herrero-Dorca ◽  
...  
Keyword(s):  
Fatigue Strength ◽  
Fatigue Behaviour ◽  
Fatigue Properties ◽  
Casting Alloy ◽  
Aluminium Casting Alloy ◽  
Negative Effect ◽  
Cast Surface ◽  
Fatigue Failures ◽  
Surface Pores ◽  
Initiation Period

In casting parts, due to the manufacturing process, the presence of defects such as porosity, inclusions and oxide films is unavoidable. All these irregularities have a negative effect on the component performance. Several works have demonstrated that, among them, porosity is especially detrimental to the fatigue properties. As most fatigue failures nucleate at the surface of a material, casting defects at or near the surface and surface roughness become an extremely important factor in determining the fatigue strength of cast components. Very little research has been conducted into the influence of both surface quality and porosity on the fatigue behaviour of aluminium castings parts. In the present work, the effects of two different surface qualities (machined and as-cast) on fatigue behaviour of an A356 casting alloy were studied. The S-N curves obtained showed that the cast surface had higher fatigue strength than the machined one. The failure in cast specimens initiated predominantly from valleys of the rough surface near pores or inclusions. On the other hand, in machined surfaces, the cracks initiated directly from surface pores. Thus, the improvement in fatigue life was attributed to a longer crack “initiation” period.

scholarly journals Quality Index of the AlSi7Mg0.3 Aluminium Casting Alloy Depending on the Heat Treatment Parameters

2016 ◽  
Vol 16 (3) ◽  
pp. 25-28 ◽  
Author(s):  
E. Czekaj ◽  
J. Zych ◽  
Z. Kwak ◽  
A. Garbacz-Klempka
Keyword(s):  
Heat Treatment ◽  
Quality Index ◽  
Construction Material ◽  
Solution Treatment ◽  
Casting Alloy ◽  
Aluminium Casting ◽  
Casting Alloys ◽  
Jet Cooling ◽  
Aluminium Casting Alloy

Abstract Issues connected with high quality casting alloys are important for responsible construction elements working in hard conditions. Traditionally, the quality of aluminium casting alloy refers to such microstructure properties as the presence of inclusions and intermetallic phases or porosity. At present, in most cases, Quality index refers to the level of mechanical properties – especially strength parameters, e.g.: UTS, YS, HB, E (Young’s Modulus), K1c (stress intensity factor). Quality indexes are often presented as a function of density. However, generally it is known, that operating durability of construction elements depends both on the strength and plastic of the material. Therefore, for several years now, in specialist literature, the concept of quality index (QI) was present, combines these two important qualities of construction material. The work presents the results of QI research for casting hypoeutectic silumin type EN AC-42100 (EN AC-AlSi7Mg0.3), depending on different variants of heat treatment, including jet cooling during solution treatment.

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