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

Autores

  • Prof. Priyavrat Thareja Head, Materials and Metallurgical Engineering department, PEC University of Technology, Chandigarh, 160012 India
  • Prof. Malay Banerjee

Palavras-chave:

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

Resumo

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

Biografia do Autor

  • Prof. Priyavrat Thareja, Head, Materials and Metallurgical Engineering department, PEC University of Technology, Chandigarh, 160012 India
    Heads Materials and Metallurgical Engineering department,PEC University of Technology. Member Editorial board, Indian Foundry Journal. Was meber Ed board, Powder Metallurgy, Quality International Journal from 1987 to 1993.Has innovated in Technical poetry, and authored elucidating Materials and Metallurgical Engineering processes and concepts.a certified, Lean Six Sigma Black Belt. An IRCA approved Lead Tutor and certified Auditor and in both QMS and EMS, he has promoted Value Auditing, and helped several industries in improving competence (through a tool ‘COMpro’. He was a part of special group of TC 176- which developed ANSI/ASQ/ISO 9001:20xx Education Management Standard presently under publication at Geneva. He is a TS 16949 Tier II supplier provisional auditor etc. He heads Materials and Metallurgical Engineering at PEC University of Technology, and also a Principal Programme Coordinator of the Total Quality Engineering and Management cell.

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Publicado

2011-02-22

Edição

Vol. 1 N.º 1 (2011)

Secção

Research Articles

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