DYMAT 88 - 2nd International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading

J. Phys. Colloques 49 (1988) C3-105-C3-108
DOI: 10.1051/jphyscol:1988315

INVESTIGATION ON MICROSTRUCTURAL CHANGE IN COPPER DEFORMED AT STRAIN RATES OF UPTO 10⁴ PER SECOND

M.M. HAQUE¹, F.B. PICKERING² and M.S.J. HASHMI<sup>3

1</sup>  Department of Metallurgical Engineering, Bangladesh University of Engineering and Technology, Dhaka-1000, Bangladesh
²  Department of Metallurgy, Sheffield City Polytechnic, GB-Sheffield S1 1WB, Great-Britain
³  School of Mechanical Engineering, National Institute for Higher Education, Dublin-9, Republic of Ireland

Résumé
Des analyses des microstructures d'échantillons de cuivre de haute pureté déformés à température ambiante à différentes vitesses de déformation comprises entre 10^-4 et 10⁴ ont été réalisées. On a pu mettre en évidence les différents modes de déformation par examen métallographique de tous les échantillons. Les observations expérimentales montrent des différences de structure pour les échantillons déformés à très grande vitesse de déformation.

Abstract
Investigations on microstructures of high purity copper specimens deformed at various strain rates ranging from about 10^-4 to about 10⁴ per second and at room temperature have been carried out. The mode of deformation has been revealed by metallographic examination of all the specimens. Experimental observations show the structural differences for the specimens deformed at very high strain rates.