Optimization of Composition for Self-hardening AlZn10Si8Mg Alloys

Rosso, Mario; Peter, Ildiko; Castella, Christian; Molina, R.

doi:10.1016/j.matpr.2015.10.066

Cited by 11 publications

(1 citation statement)

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“…The most important and relevant feature of the self-hardening alloys is related to their good performance, without the need of any heat treatment. The possibility to avoid heat treatment represents an important benefit, contributing to considerably reduce both the production cost of some components and the amount of energy involved in the manufacturing process [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Study of Bending Fatigue Properties of Al-Si Cast Alloy

Tillová¹,

Závodská²,

Kuchariková³

et al. 2017

Archives of Metallurgy and Materials

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Fatigue properties of casting Al-alloys are very sensitive to the microstructural features of the alloy (e.g. size and morphology of the eutectic Si, secondary dendrite arm spacing -SDAS, intermetallics, grain size) and casting defects (porosity and oxides). Experimental study of bending fatigue properties of secondary cast alloys have shown that: fatigue tests up to 10 6 -10 7 cycles show mean fatigue limits of approx. 30-49 MPa (AlSi9Cu3 alloy -as cast state), approx. 65-76 MPa (AlSi9Cu3 alloy after solution treatment) and 60-70 MPa (self-hardened AlZn10Si8Mg alloy) in the tested casting condition; whenever large pore is present at or near the specimen's surface, it will be the dominant cause of fatigue crack initiation; in the absence of large casting defects, the influence of microstructural features (Si morphology; Fe-rich phases) on the fatigue performance becomes more pronounced.

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Section: Introductionmentioning

confidence: 99%