Prasada, M. J. N. V. ; Suwas, S. ; Chokshi, A. H. (2009) Microstructural evolution and mechanical characteristics in nanocrystalline nickel with a bimodal grain-size distribution Materials Science and Engineering: A - Structural Materials - Properties, Microstructure and Processing, 503 (1-2). pp. 86-91. ISSN 0921-5093
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S09215...
Related URL: http://dx.doi.org/10.1016/j.msea.2008.01.099
Abstract
An attractive microstructural possibility for enhancing the ductility of high-strength nanocrystals is to develop a bimodal grain-size distribution, in which the fine grains provide strength, and the coarser grains enable strain hardening. Annealing of nanocrystalline Ni over a range of temperatures and times led to microstructures with varying volume fractions of coarse grains and a change in texture. Tensile tests revealed a drastic reduction in ductility with increasing volume fraction of coarse grains. The reduction in ductility may be related to the segregation of sulphur to grain boundaries.
Item Type: | Article |
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Source: | Copyright of this article belongs to Elsevier Science. |
Keywords: | Nano; Nickel; Texture; Grain growth; Strength; Ductility |
ID Code: | 30489 |
Deposited On: | 23 Dec 2010 13:28 |
Last Modified: | 31 May 2011 08:28 |
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