| Numéro |
J. Phys. IV France
Volume 134, August 2006
EURODYMAT 2006 - 8th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
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|---|---|---|
| Page(s) | 983 - 987 | |
| DOI | https://doi.org/10.1051/jp4:2006134150 | |
| Publié en ligne | 26 juillet 2006 | |
J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 983-987
DOI: 10.1051/jp4:2006134150
Dynamic yield and tensile strength of LY12 aluminum alloy at elevated temperatures
Yonggang Wang1, 2, Hongliang He1, 2, Denping Chen2, Lili Wang1, 2 and Fuqian Jing1, 21 Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, PO Box 919-102, Mianyang 621900, Sichuan, China
2 Mechanics & Materials Science Res. Center, Ningbo University, Zhejiang 315211, China
Published online: 26 July 2006
Abstract
Wave profile measurements are presented for LY12 aluminum
alloy with a wide range of pre-heating from the room temperature to
approaching the melting point, and the dependences of dynamic yield strength
and tensile strength on the initial sample temperature have been
investigated. Experimental results indicate that dynamic yield strength
decreases rapidly with the heating temperature. Decrease of the spall
strength with the increase of heating temperature for LY12 aluminum alloy
was observed also, and nearly 80% loss of spall strength was determined
in the present temperature range. An empirical formulation has been proposed
to normalize the dependence of spall strength on the heating temperature,
and it gives a fairly good fitting for a number of aluminum based materials,
including pure aluminum, aluminum alloy and single crystal aluminum,
measured by this work and by others in the literature.
© EDP Sciences 2006