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Sergii Eduardovich Shumilin, Milos Janecek, Nikolai Vasilievich Isaev, Peter Minarik and Robert Kral Low Temperature Plasticity of Ultrafine-Grained AE42 and AZ31 Magnesium Alloys Advanced Engineering Materials 15

Version of Record online: 17 DEC 2012 | DOI: 10.1002/adem.201200324

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Plastic deformation of AZ31 and AE42 alloys processed by ECAP is investigated in temperature range from 0.5 to 293 K. At the temperatures 4.2 K and lower, the stress–strain curves become serrated. The slope of the temperature dependencies of the yield stress is typical for the thermally activated interaction of dislocations with a spectrum of local obstacles.

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