Paper Title:
Modification of the Mechanical Anisotropy in Extruded AZ31 Sheets
  Abstract

Due to its low density and good mechanical properties Magnesium holds a high potential for design applications. The investigations discussed herein focus on the use of extruded magnesium sheets as semi-finished products e.g. for subsequent processing by roll forming. Special interest is given by the hcp-structure of magnesium which reduces forming abilities. Extrusion experiments using AZ31 were carried out to investigate the influence of different die geometries (S = sharp-edged and R= radius), billet temperatures (TB= 350°C and 390°C) and extrusion speeds (vext= 2.31 m/min and 9.24 m/min) on mechanical properties, grain structure and texture of said alloy. Two types of sheets with the dimensions of 80 x 1 mm and 80 x 2 mm respectively were produced using the institutes 10 MN extrusion press make SMS MEER. Sheet material with a thickness of 1 mm rolled from cast billets has been used for reference. Microstructural analysis focused on recrystallization behavior and grain size as well as grain distribution within the sheets. Tensile tests in extrusion or rolling direction as well as 45° and 90° to the same showed a strong influence of the specimen orientation on the mechanical properties. Additional Erichsen cupping tests demonstrated the stretch-forming capacity of the different test set-ups.

  Info
Periodical
Main Theme
Edited by
J.R. Duflou, R. Clarke, M. Merklein, F. Micari, B. Shirvani and K. Kellens
Pages
490-497
DOI
10.4028/www.scientific.net/KEM.473.490
Citation
N. Grittner, M. Engelhardt, M. Hepke, D. Bormann, B. A. Behrens, F. W. Bach, "Modification of the Mechanical Anisotropy in Extruded AZ31 Sheets", Key Engineering Materials, Vol. 473, pp. 490-497, 2011
Online since
March 2011
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: J. Swiostek, Jan Bohlen, Dietmar Letzig, Karl Ulrich Kainer
491
Authors: Takeshi Yamaguchi, Tadayoshi Tsukeda, Ken Saito, Yoshihito Kawamura
Abstract:In order to make the effect of processing clear, AM50A magnesium casting alloys were extruded at various extrusion conditions such as...
775
Authors: Young Ok Yoon, Shae K. Kim
Abstract:Thixoextrusion process has been developed for improving productivity, reducing extrusion pressure, extending die life and even cost saving...
787
Authors: Ran Liu, De Liang Yin, Jing Tao Wang
Abstract:Deformation anisotropy of samples from rolled sheet and extruded rod of AZ31 alloy was investigated in the present work. A strong basal plane...
145
Authors: M. Shahzad, A.H. Qureshi, H. Waqas, N. Hussain
Abstract:A direct-chill (DC) cast magnesium alloys ZK60 has been forward-extruded at 300 °C in a single pass at two extrusion ratios (ER) 12 and 44,...
554