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

Journal Article · Mon Dec 15 04:00:00 EST 2014 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2014.10.015· OSTI ID:22403610

Wang, Bingshu ^[1]; Deng, Liping ^[1]; Guo, Ning ^[2]; Xu, Zeren ^[3]; Li, Qiang ^[1]

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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)

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 will operate.

• OSTI ID: 22403610
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Vol. 98; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

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