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Title: Effect of strain rate and ball milling of reinforcement on the compressive response of magnesium composites
Authors: Habibi, M.K.
Pouriayevali, H.
Gupta, M. 
Keywords: A. Metal-matrix composites (MMCs)
B. Mechanical properties
D. Mechanical testing
E. Powder processing
Issue Date: Dec-2011
Citation: Habibi, M.K., Pouriayevali, H., Gupta, M. (2011-12). Effect of strain rate and ball milling of reinforcement on the compressive response of magnesium composites. Composites Part A: Applied Science and Manufacturing 42 (12) : 1920-1929. ScholarBank@NUS Repository.
Abstract: Effect of strain rate change and reinforcement ball milling on the compressive response of Mg composites is investigated in this work. Quasi-static response was determined using a servo hydraulic MTS machine while dynamic response was assessed by Split Hopkinson Pressure Bar. The presence of either as-received or ball milled Al particles significantly assisted in improving compressive response of Mg in both regimes, compared to monolithic Mg. In the quasi-static regime, the Mg/1.626Al composite containing ball milled Al particles exhibits significantly higher compressive yield strength, ultimate compressive strength and work of fracture of (+76, +87% and +58%) compared to monolithic Mg. However, with a fixed amount of Al, composites containing ball milled particles show a higher strength compared to composites containing as-received particles. Results also revealed that the tremendous increase in strain rate led to an increase in flow stress of all synthesized material while the failure strain was marginally compromised. © 2011 Elsevier Ltd. All rights reserved.
Source Title: Composites Part A: Applied Science and Manufacturing
ISSN: 1359835X
DOI: 10.1016/j.compositesa.2011.08.017
Appears in Collections:Staff Publications

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