Journal article
Coarsening of second phase in a two-phase Zr-2.5Nb: On the role of phase boundaries
Acta materialia, v 57(19), pp 5812-5821
01 Nov 2009
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Deformed two-phase Zr-2.5Nb was subjected to 700 degrees C annealing and associated coarsening. After primary recrystallization, the second-phase body-centered cubic beta was well dispersed on the grain boundaries of hexagonal alpha matrix. Prolonged annealing led to the presence of the beta, mainly at the alpha tri-junctions. The two-phase coarsening was associated with clear trends of widening in the second-phase size distribution and changes in phase boundary nature. The former is contrary to what is expected. Changes in phase boundary nature were through increased concentration of 45 degrees[0 0 1] phase boundaries-good-fit interfaces, present in larger beta particles, which were estimated to have higher three-dimensional lattice coincidence and hence lower energy. Simple analytical modeling, assuming dissolution-controlled particle coarsening and a lower interfacial energy of the phase interface with the 45 degrees[0 0 1], was shown to explain these experimental observations. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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Details
- Title
- Coarsening of second phase in a two-phase Zr-2.5Nb: On the role of phase boundaries
- Creators
- V. D. Hiwarkar - Indian Institute of Technology BombayS. K. Sahoo - Indian Institute of Technology BombayK. V. Mani Krishna - Bhabha Atomic Research Center HospitalI. Samajdar - Indian Institute of Technology BombayG. K. Dey - Bhabha Atomic Research Center HospitalD. Srivastav - Bhabha Atomic Research Center HospitalR. Tewari - Bhabha Atomic Research Center HospitalS. Banarjee - Bhabha Atomic Research Center HospitalR. D. Doherty - Drexel University
- Publication Details
- Acta materialia, v 57(19), pp 5812-5821
- Publisher
- Elsevier
- Number of pages
- 10
- Grant note
- DST (Department of Science and Technology); Department of Science & Technology (India) IIT Bombay's support National Facility of Texture and OIM BRNS (Board of Research on Nuclear Science); Department of Atomic Energy (DAE); Board of Research in Nuclear Sciences (BRNS)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- [Retired Faculty]
- Web of Science ID
- WOS:000271668200017
- Scopus ID
- 2-s2.0-70349773088
- Other Identifier
- 991019167846304721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Metallurgy & Metallurgical Engineering