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Title: Mechanical And Microstructural Aspects Of High Temperature Formability Of AZ31 Sheets

Abstract

The high temperature formability of AZ31 magnesium alloy sheets has been investigated in the temperature from 150 to 350 deg. C. The different straining conditions have been studied by using sheet blanks with several length to width ratios, and Forming Limit Diagrams were then obtained. As expected, an increase in temperature was observed to enhance the formability of the alloy. These differences in formability observed in the warm- and hot-forming regions were related to the microstructural evolution during deformation. Optical microscopy revealed the occurrence of recrystallization, and the volume fraction of recrystallized microstructure was found to increase with temperature. FEM simulation of the Nakazima test were also obtained by using flow curves obtained in torsion between 100 and 400 deg. C as input data. Correlation between FEM modeling results and experimental data was considered to be excellent.

Authors:
; ; ;  [1]
  1. Dipartimento di Meccanica, Universita Politecnica delle Marche, 60131 Ancona (Italy)
Publication Date:
OSTI Identifier:
21056990
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 907; Journal Issue: 1; Conference: 10. ESAFORM conference on material forming, Zaragoza (Spain), 18-20 Apr 2007; Other Information: DOI: 10.1063/1.2729695; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COMPUTERIZED SIMULATION; CORRELATIONS; CRYSTAL STRUCTURE; DEFORMATION; FINITE ELEMENT METHOD; MAGNESIUM ALLOYS; MICROSTRUCTURE; OPTICAL MICROSCOPY; RECRYSTALLIZATION; TEMPERATURE DEPENDENCE; THERMOMECHANICAL TREATMENTS; TORSION

Citation Formats

Spigarelli, S., Evangelista, E., El Mehtedi, M., and Balloni, L. Mechanical And Microstructural Aspects Of High Temperature Formability Of AZ31 Sheets. United States: N. p., 2007. Web. doi:10.1063/1.2729695.
Spigarelli, S., Evangelista, E., El Mehtedi, M., & Balloni, L. Mechanical And Microstructural Aspects Of High Temperature Formability Of AZ31 Sheets. United States. doi:10.1063/1.2729695.
Spigarelli, S., Evangelista, E., El Mehtedi, M., and Balloni, L. Sat . "Mechanical And Microstructural Aspects Of High Temperature Formability Of AZ31 Sheets". United States. doi:10.1063/1.2729695.
@article{osti_21056990,
title = {Mechanical And Microstructural Aspects Of High Temperature Formability Of AZ31 Sheets},
author = {Spigarelli, S. and Evangelista, E. and El Mehtedi, M. and Balloni, L.},
abstractNote = {The high temperature formability of AZ31 magnesium alloy sheets has been investigated in the temperature from 150 to 350 deg. C. The different straining conditions have been studied by using sheet blanks with several length to width ratios, and Forming Limit Diagrams were then obtained. As expected, an increase in temperature was observed to enhance the formability of the alloy. These differences in formability observed in the warm- and hot-forming regions were related to the microstructural evolution during deformation. Optical microscopy revealed the occurrence of recrystallization, and the volume fraction of recrystallized microstructure was found to increase with temperature. FEM simulation of the Nakazima test were also obtained by using flow curves obtained in torsion between 100 and 400 deg. C as input data. Correlation between FEM modeling results and experimental data was considered to be excellent.},
doi = {10.1063/1.2729695},
journal = {AIP Conference Proceedings},
number = 1,
volume = 907,
place = {United States},
year = {Sat Apr 07 00:00:00 EDT 2007},
month = {Sat Apr 07 00:00:00 EDT 2007}
}