Analysis of Strain Hardening Behaviour of Cast Aluminium Alloy 354 Subjected to Artificial Ageing at Various Temperatures

Aditya Eswar; Arnav Gupta; G. Dinesh Babu; Nageswara Rao Muktinutalapati

doi:10.4028/www.scientific.net/AMR.856.231

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 856Analysis of Strain Hardening Behaviour of Cast...

Analysis of Strain Hardening Behaviour of Cast Aluminium Alloy 354 Subjected to Artificial Ageing at Various Temperatures

Abstract:

Automotive industry makes wide scale use of cast aluminium alloy 354 in the production of crucial components, such as compressor wheels for turbochargers. The compressor wheels undergo T61 heat treatment, involving artificial ageing at 188°C. This study focuses on the possible improvement of the mechanical behaviour of the components by subjecting them to modified heat treatments involving usage of lower artificial ageing temperatures (160, 171 and 177°C). A comparative analysis of tensile properties and strain hardening behaviour has been carried out with different artificial ageing temperatures. Results showed that the heat treatment routinely employed by the industry (aged at 188°C) leads to overageing, thereby resulting in relatively inferior mechanical properties and lower strain hardening rates as compared to the samples heat treated at lower artificial ageing temperatures. It is concluded that lowering of the artificial ageing temperature can lead to a superior state of components with respect to mechanical behaviour.

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Periodical:

Advanced Materials Research (Volume 856)

Pages:

231-235

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.856.231

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Online since:

December 2013

Authors:

Aditya Eswar, Arnav Gupta, G. Dinesh Babu, Nageswara Rao Muktinutalapati

Keywords:

Artificial Ageing, Cast Aluminium Alloy 354, Hardening Capacity, HIPping, Strain Hardening Exponent, Strain Hardening Rate, Strength Coefficient

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