Alloying Solid Solution Strengthening of Fe-Ga Alloys: A first-principles Study

Renforcement d’Alliages Fe-Ga au Moyen d’une Solution Solide d’Alliage: Une Étude Basée sur les Principes Fondamentaux

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Authors
  1. Chen, K.
  2. Cheng, L.M.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN);National Research Council of Canada, Ottawa ONT (CAN) Inst for Aerospace Research
Abstract
First-principles spin polarized calculations have been implemented by using the Discrete Molecular (DMol3) package to investigate the strengthening effect from alloying additions of Nb, Mo, V, Cr and Co in cubic solid solution of Fe-Ga alloys. Mayer bond order (BO) values were used to evaluate the atomic bond strengths in the alloys, and were then used to assess the alloying strengthening characteristics. Results from the calculation suggested that transition metal Nb achieves the best strengthening effect in Fe-Ga alloys. The solid solution strengthening follows a trend from larger to smaller by Nb, Mo, V, Cr and Co. The effect of Ga on individual bond strength variation between Fe and alloying elements and also on alloying strengthening was examined.

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Keywords
Fe-Ga;DMo13 package;alloying strengthening;first principles
Report Number
DRDC-ATLANTIC-SL-2006-050 — Scientific Literature
Date of publication
31 Mar 2006
Number of Pages
11
DSTKIM No
CA027322
CANDIS No
525409
Format(s):
Electronic Document(PDF)

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