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. 2017 Mar 9;10(3):272. doi: 10.3390/ma10030272

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© 2017 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Effect of crystallite size on (a) change in lattice parameter and (b) excess GB interfacial energy ( $γ_{gb}^{Excess}$ ) and excess free volume (ΔV) at the grain boundary of Fe–10Cr–3Al alloy powder. Here, a_o and a are the lattice parameter of the undistorted and distorted Fe–10Cr–3Al alloy, respectively.