Minor Scandium - Zirconium Impacts on Aluminum-6 Magnesium Cast Alloys

Journal of Materials & Metallurgical Engineering, Vol. 1, No. 1, pp. 25-34, February 2011

Posted: 17 Apr 2011

See all articles by Priyavrat Thareja

Priyavrat Thareja

GNA University - Faculty of Engineering & Technology

Malay K. Banerjee

affiliation not provided to SSRN

Date Written: Feb 15, 2011

Abstract

Minor additions of scandium and zirconium alloy can not only improve strength and fracture toughness of the Al–6 Mg alloys, but also transform the age hardening characteristics for structural applications. If this impact were substantial, the enriched Al–6 Mg castings could be a potent material for futuristic transport sector, looking to higher specific strength and abundant availability in Indian/ global scenario.

This work reports the effect of scandium and zirconium minor addition on the texture and fracture toughness behavior of aluminium -6magnesium alloy, containing various amount of trace addition. Texture measurement and transmission electron microscopy have revealed that the evolution of texture in cast alloys after annealing is decided by the morphology and character of the precipitates. It is further demonstrated that the improvement in fracture toughness as achieved by the minor addition in Al-6Mg-0.4Sc alloy is due to reduction of the in-plane anisotropy which is secured by a favorable precipitate morphology.

Keywords: Fracture toughness, precipitation hardening, anisotropy in Al-6 Mg castings, Automotive applications

JEL Classification: z00, O3

Suggested Citation

Thareja, Priyavrat and Banerjee, Malay K., Minor Scandium - Zirconium Impacts on Aluminum-6 Magnesium Cast Alloys (Feb 15, 2011). Journal of Materials & Metallurgical Engineering, Vol. 1, No. 1, pp. 25-34, February 2011. Available at SSRN: https://ssrn.com/abstract=1811054

Priyavrat Thareja (Contact Author)

GNA University - Faculty of Engineering & Technology ( email )

Sri Hargobindgarh, Phagwara- Hoshiarpur Road,
Phagwara , Punjab, 144405
India

Malay K. Banerjee

affiliation not provided to SSRN ( email )

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