High Strain Rate Behaviour of Aluminium Alloy Sheet

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This paper presents results from quasi-static and high rate tensile testing of three aluminum sheet alloys, AA5754, AA5182 and AA6111, all of which are candidates for replacing mild steel in automotive bodies. Tests were performed at quasi-static rates using an Instron apparatus and at strain rates of 600 to 1500 s-1 using a tensile split Hopkinson bar. Additionally, an in-depth investigation was performed to determine the levels of damage within the materials and its sensitivity to strain rate. The constitutive response of all of the aluminum alloys tested showed only mild strain rate sensitivity. Dramatic increases in the elongation to failure were observed with increases in strain rate as well as greater reduction in area. Additionally, the level of damage was seen to increase with strain rate.

Info:

Periodical:

Materials Science Forum (Volumes 519-521)

Edited by:

W.J. Poole, M.A. Wells and D.J. Lloyd

Pages:

139-146

DOI:

10.4028/www.scientific.net/MSF.519-521.139

Citation:

M. J. Worswick et al., "High Strain Rate Behaviour of Aluminium Alloy Sheet", Materials Science Forum, Vols. 519-521, pp. 139-146, 2006

Online since:

July 2006

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$35.00

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