Creep Behavior of In-Situ Formed AlN Reinforced Mg–5Al Nanocomposite at Low Temperatures and Low Stresses
The deformation mechanism of in-situ AlN reinforced Mg-5Al nanocomposite was studied through creep test at <0.35 Tm (Tm = melting temperature of Mg) and various stress levels ranging from 40 to 130 MPa. From the experimental results, a stress exponent of 2.5 and an activation energy for diffusion of 47 kJ mol−1 were estimated. It was found from the deformation parameters and microstructure observation that grain boundary sliding (GBS) and Coble creep operated simultaneously during deformation.
Keywords: CREEP; MAGNESIUM; MECHANICAL MILLING; NANOCOMPOSITE
Document Type: Research Article
Publication date: 01 December 2009
- Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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