Influence of boron addition on the grain refinement and mechanical properties of AZ91 Mg alloy

This article reports the effect of boron addition on the grain refinement efficiency and mechanical properties of AZ91 magnesium alloy. The results show that the addition of boron in the form of Al–4B master alloy, significantly refines the grain size of AZ91 alloy. This refinement is due to the pre...

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Veröffentlicht in:	Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2009-11, Vol.525 (1), p.207-210
Hauptverfasser:	Suresh, M., Srinivasan, A., Ravi, K.R., Pillai, U.T.S., Pai, B.C.
Format:	Artikel
Sprache:	eng
Schlagworte:	AZ91 Mg alloy Cross-disciplinary physics: materials science rheology Exact sciences and technology Grain refinement Heterogeneous nucleation Materials science Mechanical properties Other heat and thermomechanical treatments Physics Treatment of materials and its effects on microstructure and properties
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Beschreibung
Zusammenfassung:	This article reports the effect of boron addition on the grain refinement efficiency and mechanical properties of AZ91 magnesium alloy. The results show that the addition of boron in the form of Al–4B master alloy, significantly refines the grain size of AZ91 alloy. This refinement is due to the presence of AlB 2 particles, which act as potential nucleants for Mg grains. Improved mechanical properties are obtained with the addition of boron due to the finer grains.
ISSN:	0921-5093 1873-4936
DOI:	10.1016/j.msea.2009.07.019