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A general mechanism...
A general mechanism of grain growth -I. Theory
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Hu, Jianfeng (author)
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Wang, Xianhao (author)
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- Zhang, Junzhan (author)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK),Xi’an University of Architecture and Technology, China
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Luo, Jun (author)
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Zhang, Zhijun (author)
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- Shen, Zhijian (author)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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(creator_code:org_t)
- Elsevier BV, 2021
- 2021
- English.
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In: Journal of Materiomics. - : Elsevier BV. - 2352-8478 .- 2352-8486. ; 7:5, s. 1007-1013
- Related links:
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https://doi.org/10.1...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The behaviors of grain growth dominate the formation of the microstructure inside polycrystalline materials and thus strongly influence their practical performances. However, grain growth behaviors still remain ambiguous and thus lack a mathematical formula to describe the general evolution despite decades of efforts. Here, we propose a new migration model of grain boundary (GB) and further derive a mathematical expression to depict the general evolution of grain growth in the cellular structures. The expression incorporates the variables influencing growth rate (e.g. GB features, grain size and local grain size distribution) and thus reveals how the normal, abnormal and stagnant behaviors of grain growth occur in polycrystalline systems. In addition, our model correlates quantitatively GB roughening transition with grain growth behavior. The general growth theory may provide new insights into the GB thermodynamics and kinetics during the cellular structure evolution.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Grain boundary migration
- Grain growth
- Roughening transition
- Abnormal grain growth
Publication and Content Type
- ref (subject category)
- art (subject category)
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