Please use this identifier to cite or link to this item: https://doi.org/10.1080/14786435.2010.484405
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dc.titleOn the generation of nanograins in pure copper through uniaxial single compression
dc.contributor.authorZhang, B.
dc.contributor.authorShim, V.P.W.
dc.date.accessioned2014-04-24T09:36:03Z
dc.date.available2014-04-24T09:36:03Z
dc.date.issued2010-08
dc.identifier.citationZhang, B., Shim, V.P.W. (2010-08). On the generation of nanograins in pure copper through uniaxial single compression. Philosophical Magazine 90 (24) : 3293-3311. ScholarBank@NUS Repository. https://doi.org/10.1080/14786435.2010.484405
dc.identifier.issn14786435
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/51489
dc.description.abstractAttempts at generating nanograins through uniaxial single compression were made by deforming copper samples at 298 K and 77 K. At 298 K, dynamically-deformed samples (DDS) become softer, in contrast to quasi-statically deformed samples (QDS), which show a hardness close to the saturation value. The microstructure of DDS is characterised by deformation twins and equiaxed micron-sized grains, and the observed softening is due to the occurrence of recrystallisation (RX). At a reduced temperature of 77 K, nanograins are generated in DDS, whereas QDS show forest dislocations and twins. The generation of nanograins, which evolve through rotational DRX, is associated with the formation of shear bands with an amorphous structure. Compared with twinning, it appears that amorphisation plays a more pronounced role in high strain rate deformation at reduced temperatures (77 K). The hardness of DDS, obtained from compression at 77 K, exceeds the saturation value by 16%, whereas that of QDS corresponds approximately to saturation. © 2010 Taylor & Francis.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1080/14786435.2010.484405
dc.sourceScopus
dc.subjectamorphisation
dc.subjectnanograin
dc.subjectrecrystallisation
dc.subjectshear band
dc.subjectstrain rate
dc.subjecttemperature effect
dc.subjecttwinning
dc.subjectuniaxial single compression
dc.typeArticle
dc.contributor.departmentMECHANICAL ENGINEERING
dc.description.doi10.1080/14786435.2010.484405
dc.description.sourcetitlePhilosophical Magazine
dc.description.volume90
dc.description.issue24
dc.description.page3293-3311
dc.identifier.isiut000279449000002
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