The effect of nb on the recrystallization and grain growth of Ultra-High-Purity α-Fe : A combinatorial approach
Identifieur interne : 009300 ( Main/Exploration ); précédent : 009299; suivant : 009301The effect of nb on the recrystallization and grain growth of Ultra-High-Purity α-Fe : A combinatorial approach
Auteurs : C. W. Sinclair [Canada] ; C. R. Hutchinson [Australie] ; Y. Brechet [France]Source :
- Metallurgical and materials transactions. A, Physical metallurgy and materials science [ 1073-5623 ] ; 2007.
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Abstract
A combinatorial approach to the problem of the effect of Nb in solid solution on the conditions for recrystallization and grain growth in ultra-high-purity (UHP) α-Fe is presented. It is shown to be an efficient means for estimating parameters such as the binding energy of solute to grain boundaries, the transboundary solute diffusivity, and the intrinsic mobility of grain boundaries, crucial for practical applications of existing solute drag theories to questions related to alloy design. Using a Fe-Nb diffusion couple (Nb contents ranging from 0 to 0.095 wt pet) transformed within a temperature gradient (RT-850 °C), the boundary between the recrystallized and unrecrystallized regions and the grain growth behavior as a function of Nb content and temperature could be quantitatively rationalized using the slow branch of Cahn's solution to the solute drag problem.
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W." last="Sinclair">C. W. Sinclair</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Materials Engineering, University of British Columbia</s1><s2>Vancouver, BC, 6VT 1ZA</s2><s3>CAN</s3><sZ>1 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Vancouver, BC, 6VT 1ZA</wicri:noRegion></affiliation></author><author><name sortKey="Hutchinson, C R" sort="Hutchinson, C R" uniqKey="Hutchinson C" first="C. R." last="Hutchinson">C. R. Hutchinson</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Materials Engineering, Monash University</s1><s2>Clayton 3800, Victoria</s2><s3>AUS</s3><sZ>2 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Clayton 3800, Victoria</wicri:noRegion></affiliation></author><author><name sortKey="Brechet, Y" sort="Brechet, Y" uniqKey="Brechet Y" first="Y." last="Brechet">Y. 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