锆-4热成形过程中CDRX和MDRX的模拟

IF 1.9 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Modelling and Simulation in Materials Science and Engineering Pub Date : 2023-10-13 DOI:10.1088/1361-651x/acfe27

Victor Grand, Baptiste Flipon, Alexis Gaillac, Marc Bernacki

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引用次数: 0

摘要

摘要采用近年来建立的连续动态再结晶的全场水平集模型，模拟了锆合金-4在热压缩及后续热处理过程中的再结晶过程。通过实验和模拟研究了应变速率、终应变和初始显微组织的影响。量化了再结晶的非均质性。这可以证实淬火后的显微组织显示出更高程度的非均质性。模拟结果与实验结果相吻合。该模拟框架特别能够捕获由不同初始微观结构引起的这种再结晶非均匀性。最后，通过不同数值公式的模拟，指出了晶内位错密度非均质性对再结晶晶粒择优生长的影响。

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Modeling CDRX and MDRX during hot forming of zircaloy-4

Abstract A recently developed full field level-set model of continuous dynamic recrystallization is applied to simulate zircaloy-4 recrystallization during hot compression and subsequent heat treatment. The influence of strain rate, final strain and initial microstructure is investigated, by experimental and simulation tools. The recrystallization heterogeneity is quantified. This enables to confirm that quenched microstructures display a higher extent of heterogeneity. The simulation results replicate satisfactorily experimental observations. The simulation framework is especially able to capture such recrystallization heterogeneity induced by a different initial microstructure. Finally, the role of intragranular dislocation density heterogeneities over the preferential growth of recrystallized grains is pointed out thanks to additional simulations with different numerical formulations.

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来源期刊

Modelling and Simulation in Materials Science and Engineering 工程技术-材料科学：综合

CiteScore

3.30

自引率

5.60%

发文量

审稿时长

1.7 months

期刊介绍： Serving the multidisciplinary materials community, the journal aims to publish new research work that advances the understanding and prediction of material behaviour at scales from atomistic to macroscopic through modelling and simulation. Subject coverage: Modelling and/or simulation across materials science that emphasizes fundamental materials issues advancing the understanding and prediction of material behaviour. Interdisciplinary research that tackles challenging and complex materials problems where the governing phenomena may span different scales of materials behaviour, with an emphasis on the development of quantitative approaches to explain and predict experimental observations. Material processing that advances the fundamental materials science and engineering underpinning the connection between processing and properties. Covering all classes of materials, and mechanical, microstructural, electronic, chemical, biological, and optical properties.