Study on hot deformation behaviuor of Mg-7. 1Gd-2. 8Y-1. 3Nd-0. 4Zn magnesium alloy using hyperbolic sine equation and processing maps

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Rezaeii Kheybari Ehsan; EBRAHIMI GHOLAMREZA

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Journal: JOURNAL OF NEW MATERIALS Year:2020 | Volume:10 | Issue:3 (39) Page(s): 61-76

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Title

Study on hot deformation behaviuor of Mg-7. 1Gd-2. 8Y-1. 3Nd-0. 4Zn magnesium alloy using hyperbolic sine equation and processing maps

Author(s)

Rezaeii Kheybari Ehsan | EBRAHIMI GHOLAMREZA | Issue Writer Certificate

Keywords

Mg-RE alloys'Q1

hot deformationQ1

hyperbolic sine equatutionQ1

processing mapsQ1

microstructureQ2

Abstract

Addition of rare earth (RE) elements to magnesium alloys has developed the Mg-RE alloys having high specific strength to be used in the aerosapace and automobile industries. Deformability of Mg alloys is limited due to hexcagonal closed packed (HCP) structure and the alloys are routinely processed by hot deformation. The aim of this study is investigation of hot deformation behavior and developed a con-stitutive model for Mg-7. 1Gd-2. 8Y-1. 3Nd-0. 4Zn (wt%) alloy. Therefore, hot compression tests were performed at temperature interval of 400º C-475º C and at strain rates in the range of 0. 001s-1-1s-1 with maxiumum strain of 0. 6 on as-extruded specimens. The hyperbolic-sine analysis showed that the stress power (n) and the activation energy (Q) of the investigated alloy are 4. 92 and 307. 42 kJ. mol-1, respectively. The processing maps were drawn based on the dynamic material model (DMM) in the study of the alloy. The maps suggest two stable domains at: (1) 475º C-0. 001s-1 and (2) 425º C-460º C at the strain rates of 0. 005s-1-0. 05s-1, and indicate a wide unstable region below 425º C.

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APA: Copy

Rezaeii Kheybari, Ehsan, & EBRAHIMI, GHOLAMREZA. (2020). Study on hot deformation behaviuor of Mg-7. 1Gd-2. 8Y-1. 3Nd-0. 4Zn magnesium alloy using hyperbolic sine equation and processing maps. JOURNAL OF NEW MATERIALS, 10(3 (39) ), 61-76. SID. https://sid.ir/paper/169768/en

Vancouver: Copy

Rezaeii Kheybari Ehsan, EBRAHIMI GHOLAMREZA. Study on hot deformation behaviuor of Mg-7. 1Gd-2. 8Y-1. 3Nd-0. 4Zn magnesium alloy using hyperbolic sine equation and processing maps. JOURNAL OF NEW MATERIALS[Internet]. 2020;10(3 (39) ):61-76. Available from: https://sid.ir/paper/169768/en

IEEE: Copy

Ehsan Rezaeii Kheybari, and GHOLAMREZA EBRAHIMI, “Study on hot deformation behaviuor of Mg-7. 1Gd-2. 8Y-1. 3Nd-0. 4Zn magnesium alloy using hyperbolic sine equation and processing maps,” JOURNAL OF NEW MATERIALS, vol. 10, no. 3 (39) , pp. 61–76, 2020, [Online]. Available: https://sid.ir/paper/169768/en

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