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Title: EBSD analysis of (10–12) twinning activity in Mg–3Al–1Zn alloy during compression

The (10–12) twinning activity of Mg–3Al–1Zn magnesium alloy during uniaxial compression at room temperature has been investigated by electron backscatter diffraction. The results indicated that the twinning activity was closely related with two angles: one was the angle between the c-axis and the compression direction and the other was the angle between the a-axis and the titling direction in the basal plane for a given relation between the c-axis and the compression direction. These two parameters can be used to explain which twinning variant will operate under the given strain path. For the grains containing a single (10–12) twinning variant, the (10–12) twinning variant occurred in a wide range of Schmid factor values (0 < Schmid factor < 0.5) and the Schmid factor rank of 1 or 2 was the most commonly observed. By contrast, for the grains containing two (10–12) twinning variants, the (10–12) twinning activity exhibited a stronger orientation dependence and the combinations of Schmid factor ranks 1–3 and 1–2 were the most commonly observed. - Highlights: • Twinning activity of AZ31 magnesium alloy was investigated by EBSD. • (10–12) twinning shows a strong orientation dependence. • Two angles can be used to explain which twin variant willmore » operate.« less
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [1]
  1. College of Materials Science and Engineering, Fuzhou University, Fujian 350108 (China)
  2. Faculty of Materials Science and Energy, Southwest University, Chongqing 400715 (China)
  3. Department of Automotive Engineering, Clemson University, Greenville, SC 29607 (United States)
Publication Date:
OSTI Identifier:
22403610
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Characterization; Journal Volume: 98; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM BASE ALLOYS; BACKSCATTERING; COMPRESSION; ELECTRON DIFFRACTION; MAGNESIUM ALLOYS; ORIENTATION; STRAINS; TEMPERATURE RANGE 0273-0400 K; TWINNING; ZINC ALLOYS