Hot deformation behavior and flow stress modeling of annealed AZ61 Mg alloys

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題名:	Hot deformation behavior and flow stress modeling of annealed AZ61 Mg alloys
作者:	李雄;Liao, Chinghao;Wu, Horngyu;Wu, Chengtao;Zhu, Fengjun;Lee, Shyong
貢獻者:	工學院機械工程學系
關鍵詞:	alloy;analysis;AZ61;AZ61 Mg alloy;Constitutive;Constitutive analysis;Dynamic;Dynamic recrystallization;Flow;Flow stress modeling;modeling;parameters;recrystallization;Strain-dependent;Strain-dependent constitutive parameters;stress
日期:	2014-01-01
上傳時間:	2026-04-23 15:14:08 (UTC+8)
出版者:	Elsevier BV;Elsevier B.V
摘要:	摘要： In this study, the hyperbolic-sine type constitutive equation was used to model the flow stress of annealed AZ61 magnesium(Mg) alloys. Hot compression tests were conducted at the temperatures ranging from 250 1C to 450 1C and at the strain rates ranging from 1 10–3s 1to 1 s 1on a Gleeble-3500 thermo-simulation machine. Constitutive equations as a function of strain were established through a simple extension of the hyperbolic sine constitutive relation. The effects of annealing heat treatments on the variations in constitutive parameters with strain were discussed. The hot compressive flow curves exhibited typical features of dynamic recrystallization. Multiple peak flow curves were observed in the annealed specimens upon testing at a strain rate of 1 10 1s–1and at various temperatures. Variations in constitutive parameters with strain were related to flow behavior and dependent on the initial conditions of the test specimens. The flow stresses of annealed AZ61 Mg alloys were predicted well by the strain-dependent constitutive equations of the hyperbolic sine function under the deformation conditions employed in this study. 其他題名： Progress in Natural Science 出版者： Elsevier B.V 出版日期： 2014-06-01 出處： Progress in natural science, 2014-06, Vol.24 (3), p.253-265 資源來源： China Online Journals (COJ) 版權： 2014 Chinese Materials Research Society 版權： Copyright © Wanfang Data Co. Ltd. All Rights Reserved. 識別號： ISSN: 1002-0071 識別號： ISSN: 1745-5391 識別號： DOI: 10.1016/j.pnsc.2014.04.006
顯示於類別:	[機械工程學系] 期刊論文

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