Investigation on the Strengthening Mechanism of Flow Control Extrusion by Using Experiment and Numerical Simulation

Bimodal grain structure leads to high strength and strain hardening effect of metallic materials. In this study, an effective approach called flow control extrusion (FCE) is proposed to achieve heterostructures of pure copper. Compared with conventional extrusion (CE), FCE shows much stronger grain...

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Bibliographic Details
Published inMaterials Vol. 14; no. 17; p. 5001
Main Authors Wu, Guangshan, Li, Yangqi, Chen, Fei
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.09.2021
MDPI
Subjects
Deformation
Ductility
Experiments
Extrusion
Extrusion dies
Flow control
Grain boundaries
Grain orientation
Grain refinement
Grain size
Grain structure
Heterostructures
Mechanical properties
Microstructure
Shear strain
Strain hardening
Ultrafines
United States > US
China
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Summary:Bimodal grain structure leads to high strength and strain hardening effect of metallic materials. In this study, an effective approach called flow control extrusion (FCE) is proposed to achieve heterostructures of pure copper. Compared with conventional extrusion (CE), FCE shows much stronger grain refine ability and much weaker grain orientation concentration. The significant grain refinement and heterostructures depend on the severe shear strain from FCE. The heterostructures of sample subject to FCE transfer from bimodal structure to gradient structure with the decrease of temperature, as the grains in the surface of sample are all refined to ultrafine scale. Both these two heterostructures can realize the improvement of strength and strain hardening effect simultaneously.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1996-1944
1996-1944
DOI:10.3390/ma14175001