Impression Creep Characteristics of Mg-Sn-Ag Alloy

Abstract:

Magnesium alloys with enhanced thermal stability are being developed for automobile engine applications. The available commercial Mg-alloys are usually alloyed with aluminum that are thermally stable only for T < 150^o C. Development of new Mg-alloys is underway and Mg-Sn alloys are a promising option. In Mg-Sn alloy, the Mg₂Sn phase has high thermal stability and is expected to enhance the high temperature properties. In this study, Mg-5Sn alloy is incorporated with Ag as a minor alloying element (0.175 wt. %). The creep behavior of the Mg-Sn-Ag alloy is investigated using the impression creep technique. The impression creep tests were carried out under punching stress in the range of 80-320 MPa and temperature of 373-573 K, for dwell times up to 5 hours. The results highlight that creep of the alloy was load and temperature dependent, i.e. increasing the load and temperature resulted in higher creep rates.

• Periodical: Applied Mechanics and Materials (Volume 854)
• Pages: 33-37
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.854.33
• Online since: October 2016
• Authors: S. Jayalakshmi*, R. Arvind Singh, V. Thenambika, J. Kirubanidhi, Manoj Gupta
• Keywords: Creep Rate, Impression Creep, Magnesium, Mg-Sn-Ag Alloy, Stress, Temperature

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