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On the impact of second phase particles on twinning in magnesium alloys
conference contribution
posted on 2011-01-01, 00:00 authored by Matthew BarnettMatthew Barnett, N Stanford, J Geng, J RobsonDeformation twinning is an important deformation mode in magnesium alloys. Despite this, little is known on the extent to which the stress for twinning can be altered by a dispersion of second phase particles. The current paper presents a series of findings on the role of differently shaped particles on both the stress required for twinning and the characteristics of the twins that form. It is shown that plate shaped particles are, as one might expect, an effective strengthener to {10-12} twinning. When precipitate plates form on the basal planes, the relative hardening of basal slip is minor in comparison to that seen for twinning. This provides opportunity for the alloy designer to control the apparent critical resolved shear stresses (CRSS) for the different deformation modes. Possible sources for the hardening of twins are discussed.
History
Event
Minerals, Metals and Materials Society (TMS) Annual Meeting and Exhibition (140th : 2011 : San Diego, Calif.)Pagination
289 - 293Publisher
John Wiley & SonsLocation
San Diego, Calif.Place of publication
Hoboken, N. J.Start date
2011-02-27End date
2011-03-03ISBN-13
9781118029367Language
engPublication classification
E1 Full written paper - refereedCopyright notice
2011, WileyEditor/Contributor(s)
W Sillekens, S Agnew, N Neelameggham, S MathaudhuTitle of proceedings
TMS 2011 : Magnesium Technology 2011 : Proceedings of the Magnesium Technology SymposiumUsage metrics
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