Identifying creep mechanisms at low stresses
Identifying creep mechanisms at low stresses
There are three possible mechanisms occurring in high temperature creep at low stresses: diffusion creep, Harper–Dorn creep and grain boundary sliding. This paper examines the characteristics of these three processes and proposes two sets of measurements that may be used to give an unambiguous identification of the dominant creep mechanism. The approach is applied to published creep data and new measurements are reported for a Mg–0.55%Zr alloy which permit a clear distinction between diffusion creep and grain boundary sliding.
creep, denuded zones, diffusion creep, grain boundary sliding, harper–dorn creep
266-273
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
15 May 2000
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Abstract
There are three possible mechanisms occurring in high temperature creep at low stresses: diffusion creep, Harper–Dorn creep and grain boundary sliding. This paper examines the characteristics of these three processes and proposes two sets of measurements that may be used to give an unambiguous identification of the dominant creep mechanism. The approach is applied to published creep data and new measurements are reported for a Mg–0.55%Zr alloy which permit a clear distinction between diffusion creep and grain boundary sliding.
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Published date: 15 May 2000
Keywords:
creep, denuded zones, diffusion creep, grain boundary sliding, harper–dorn creep
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 48645
URI: http://eprints.soton.ac.uk/id/eprint/48645
ISSN: 0921-5093
PURE UUID: d0045b96-0df6-4585-a5ad-5cf454984412
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Date deposited: 08 Nov 2007
Last modified: 16 Mar 2024 03:28
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