异步冷轧少晶铜薄带局部变形的CP-FE模拟

doi:10.11896/cldb.21120214

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Abstract A micro-asynchronous mill with tension-compression-shear function was used to carry out the rolling experiment of thin strip with oligocrystal copper. Based on the theory of crystal plasticity, a crystal plastic finite element model (CPFEM) was established for the rolling deformation of thin strip of oligocrystal copper under composite forming conditions. Five orientation sets for each model and 1 to 5 grains in the thickness direction were incorporated into an oligocrystal microstructure generated by grain growth and texture distribution model. The accuracy of the developed CPFEM model is verified by the fact that the simulated roll force agree well with the experimental results. Results show that the CPFE model can quantitatively predict the slip activation, slip localization and grain-by-grain comparison of slip under compound rolling. In the thin oligocrystal with 1or 2 grains in the thickness direction, the slip is markedly heterogeneous and localization depending on grain morphology and crystallographic orientation, formation intense slip bands running at 45° with respect to the rolling direction and located along grain boundary and intra-grain. However, opposite grain orientation and morphology effects in the thick oligocrystal with 4 or 5 grains in the thickness direction. This model can accurately determine the mechanism of slip deformation and evolution of oligocrystal structures with similar grain size and thickness.

Key words： compound rolling oligocrystal grain interaction crystal plasticity finite element analysis

Published: 25 July 2023 Online: 2023-07-24

CLC number:

TG335.5

Fund:National Natural Science Foundation of China (51804219, 52005432,52204401), the Provincial Natural Science Foundation of Anhui Province (1808085QE161), the Provincial Key Research and Development Project of Anhui Province (202004a05020011), the Excellent Young Talent Program in University of Anhui Province (gxyq2022093), the Excellent Youth Research Project in University of Anhui Province (2022AH030153), and the Key Cultivation Project of Tongling University (2020tlxyxs33).

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	CHEN Shoudong
	LU Rihuan
	SUN Jian
	LI Jie

Cite this article:

CHEN Shoudong,LU Rihuan,SUN Jian, et al. CP-FE Modelling of Localized Plastic Deformation in the Asynchronous Cold Rolling of a Copper Oligocrystal[J]. Materials Reports, 2023, 37(14): 21120214-10.

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http://www.mater-rep.com/EN/10.11896/cldb.21120214 OR http://www.mater-rep.com/EN/Y2023/V37/I14/21120214

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