Home Kovove Materialy-Metallic Materials 2011 Metallic Materials Vol. 49 (2011), no. 5, pp.307-318

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Metallic Materials Vol. 49 (2011), no. 5, pp.307-318

Title: Constant structure creep experiments on aluminium
Author: K. MILICKA

Abstract: Creep behaviour of pure aluminium was investigated using constant structure creep experiments performed in the steady-state creep stage over a wide temperature interval from 523 to 773 K. The simultaneous activity of two parallel operating dislocation mechanisms was deduced from an analysis of the experiments. Both mechanisms are probably governed by diffusion along dislocation cores; however, they differ substantially in their activation areas. The contributions of the mechanisms to the steady-state creep rate depend on the applied stress and temperature. The nature of both mechanisms is extensively discussed.

Keywords: mechanical properties, high temperature deformation, creep, aluminium
Year: 2011, Volume: 49, Issue: 5 Page From: 307, Page To: 318

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