Continuous dynamic recrystallization in a Zn-Cu-Ti sheet subjected to bilinear tensile strain

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:789

Article

Leonard, M.^1,2  Moussa, C.³  Roatta, A.^1,2  Seret, A.⁴  Signorelli, J. W.^1,2 

[1] Inst Fis Rosario IFIR CONICET UNR, Ocampo & Esmeralda, RA-2000 Rosario, Santa Fe, Argentina

[2] Fac Cs Exactas Ingn & Agrimensura FCEIA UNR, Av Pellegrini 250, RA-2000 Rosario, Santa Fe, Argentina

[3] PSL Res Univ, MINES ParisTech, CEMEF, CNRS,UMR 7635, CS 10207 1 Rue Claude Daunesse, F-06904 Sophia Antipolis, France

[4] Tech Univ Denmark, Dept Mech Engn, Sect Mfg Engn, DK-2800 Lyngby, Denmark

关键词: Zinc sheet;    Continuous dynamic recrystallization;    Formability;    Texture;   

DOI  :  10.1016/j.msea.2020.139689

来源: Elsevier

【 摘 要 】

Research on zinc sheet formability, relevant for its technological applications, requires deeper understanding of the microstructural features that govern the plastic response of the material. In this work, a microstructural analysis by means of electron back-scattered diffraction (EBSD) technique was conducted on a commercial Zn-Cu-Ti sheet subjected to a bilinear tensile test at room temperature and low strain rate (5 x 10(-4) s(-1)). The refinement of the granular structure is analyzed in terms of the development of subgrains within initially large grains, which eventually evolve into high angle boundary grains. This continuous dynamic recrystallization (CDRX) mechanism appears as a key factor in order to explain the grain fragmentation process and the weakening of the texture observed during straining of this alloy.

【 授权许可】

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