Paper Title:
Hot Workability and Constitutive Equations of ZM21 Magnesium Alloy
  Abstract

One of the most challenging activities for magnesium industry is to increase productivity by introducing cost-effective processes. While die-cast magnesium alloys are in worldwide use, even in the demanding sector of automotive industry, where cost is the major asset, wrought magnesium alloys still not widely available. The aim of the present study was to evaluate the high temperature response by torsion testing of a ZM21 alloy, to calculate the constitutive equations to be used in FEM simulation of the extrusion process. The ZM21 alloy that was considered in the present study was Direct-Chill casted by Alubin Ltd., Israel. Torsion tests were carried out in air on a computer-controlled torsion machine, under strain rates ranging from 10-2 to 5 s-1 and temperatures from 200 to 400°C. The equivalent peak flow stress was related to temperature and strain rate by means of the conventional power-law and by the sinh equation. The microstructure of the alloy, even at 300°C, appeared largely unrecrystallized, with elongated grains; also at 400°C, the structure is more equiaxed, but elongated structures still appears.

  Info
Periodical
Edited by
Luca Tomesani and Lorenzo Donati
Pages
79-86
DOI
10.4028/www.scientific.net/KEM.367.79
Citation
M. El Mehtedi, L. Balloni, S. Spigarelli, E. Evangelista, G.I. Rosen, "Hot Workability and Constitutive Equations of ZM21 Magnesium Alloy", Key Engineering Materials, Vol. 367, pp. 79-86, 2008
Online since
February 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Zhi Guo Chen, Zi Qiao Zheng, Dong Feng Han
Abstract:The hot deformation behaviors and microstructure in Al-Cu-Li alloy containing small amount of Ag and Mg were investigated by transmission...
1925
Authors: Gui Qing Chen, Gao Sheng Fu, Wen Duan Yan, Chao Zeng Cheng, Ze Chang Zou
Modeling, Analysis and Simulation of Manufacturing Processes
Abstract:The 3003 Al alloy was deformed by isothermal compression in the range of deformation temperature 300-500 °C at strain rate 0.0l-10.0...
306
Authors: Xiao Yu Zhong, Guang Jie Huang, Fang Fang He, Qing Liu
Abstract:Uni-axial tensile plastic deformation behavior of rolled magnesium alloy AZ31B under the temperature range from room temperature(RT) to 250°C...
219
Authors: Mei Juan Hu, Peng Wang, Li Hong Han, Xin Li Han
Abstract:The dynamic mechanical behaviors of as-cast sour service drill pipe steel under development during hot deformation were studied in this paper...
266
Authors: Tamás Mikó, Peter Barkoczy
Chapter 2: Plastic deformation
Abstract:This paper presents an investigation about the occurrence of the dynamic recrystallization (DRX) during hot forming. Two 7075 aluminum alloy...
105