International Journal of Vehicle Structures and Systems

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Impression Creep Behaviour of Extruded Mg-Sn Alloy


Affiliations
1 Dept. of Mech. Engg., Bannari Amman institute of Technology, Sathyamangalam, Tamilnadu, India
2 Dept. of Mech. Engg., Bannari Amman institute of Technology, Sathyamangalam, Tamilnadu
3 Dept. of Aeronautical Engg., Bannari Amman Institute of Technology, Sathyamangalam, Tamilnadu
4 Dept. of Mech. Engg., Bannari Amman Institute of Technology, Sathyamangalam, Tamilnadu
5 Dept. of Mech. Engg., National University of Singapore, Singapore
 

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Mg-Sn alloys contain thermally stable Mg2Sn phase, and are proposed as heat-resistant alloys for automobile engine applications. In this study, the creep behaviour of Mg-5Sn alloy was investigated using impression creep technique. The impression creep tests were carried out under constant punching stress in the range of 80-320 MPa at temperatures 373-573 K, for dwell times up to 5 hours. The results highlight that creep of Mg-5Sn alloy was load and temperature dependent, i.e. increasing the load and temperature resulted in larger creep deformation and hence to higher creep rates. From the creep curves, the stress exponent and the activation energy were estimated and the creep mechanism was identified.

Keywords

Magnesium Alloys, Mg-5Sn Alloy, Impression Creep, Creep Rate, Temperature, Stress.
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  • Impression Creep Behaviour of Extruded Mg-Sn Alloy

Abstract Views: 314  |  PDF Views: 180

Authors

V. Thenambika
Dept. of Mech. Engg., Bannari Amman institute of Technology, Sathyamangalam, Tamilnadu, India
S. Jayalakshmi
Dept. of Mech. Engg., Bannari Amman institute of Technology, Sathyamangalam, Tamilnadu
R. A. Singh
Dept. of Aeronautical Engg., Bannari Amman Institute of Technology, Sathyamangalam, Tamilnadu
J. K. Nidhi
Dept. of Mech. Engg., Bannari Amman Institute of Technology, Sathyamangalam, Tamilnadu
M. Gupta
Dept. of Mech. Engg., National University of Singapore, Singapore

Abstract


Mg-Sn alloys contain thermally stable Mg2Sn phase, and are proposed as heat-resistant alloys for automobile engine applications. In this study, the creep behaviour of Mg-5Sn alloy was investigated using impression creep technique. The impression creep tests were carried out under constant punching stress in the range of 80-320 MPa at temperatures 373-573 K, for dwell times up to 5 hours. The results highlight that creep of Mg-5Sn alloy was load and temperature dependent, i.e. increasing the load and temperature resulted in larger creep deformation and hence to higher creep rates. From the creep curves, the stress exponent and the activation energy were estimated and the creep mechanism was identified.

Keywords


Magnesium Alloys, Mg-5Sn Alloy, Impression Creep, Creep Rate, Temperature, Stress.



DOI: https://doi.org/10.4273/ijvss.8.3.10