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Title: Dependence of twinned volume fraction on loading mode and Schmid factor in randomly textured magnesium

Abstract

Here, the twinning activity in random textured cast magnesium during room temperature tension and compression tests was monitored by neutron diffraction (ND). Variation of integrated intensities of selected diffraction peaks, characterizing the twinned volume in particularly oriented grains was compared with calculated Schmid factors for extension twinning of these grains. It is shown that in tension there is a direct proportion between the twinned volume and the maximum value of the Schmid factor for a given grain orientation. In contrast, in compression this relation is not valid. The twinned volume in this case is influenced by both deviation of the grain from the ideal orientation and its rotation around the c-axis. The experimental results are in good agreement with those obtained from elasto-plastic self-consistent (EPSC) modeling.

Authors:
 [1];  [2]; ORCiD logo [3];  [4]
  1. Charles Univ., Prague (Czech Republic). Faculty of Mathematics and Physics and Dept. of Physics of Materials; Academy of Sciences of the Czech Republic (ASCR), Prague (Czech Republic). Nuclear Physics Inst.
  2. Charles Univ., Prague (Czech Republic). Faculty of Mathematics and Physics and Dept. of Physics of Materials
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Deakin Univ., Geelong, VIC (Australia)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Czech Science Foundation (GACR); European Regional Development Fund (ERDF)
OSTI Identifier:
1459810
Alternate Identifier(s):
OSTI ID: 1550482
Report Number(s):
LA-UR-16-27103
Journal ID: ISSN 1359-6454
Grant/Contract Number:  
AC52-06NA25396; 14-36566G; 251715; CZ.02.1.01/0.0/0.0/15_003/0000485
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 130; Journal Issue: C; Journal ID: ISSN 1359-6454
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Twinning; Magnesium; Neutron diffraction; Schmid factor

Citation Formats

Capek, Jan, Mathis, Kristian, Clausen, Bjorn, and Barnett, Matthew. Dependence of twinned volume fraction on loading mode and Schmid factor in randomly textured magnesium. United States: N. p., 2017. Web. doi:10.1016/j.actamat.2017.03.017.
Capek, Jan, Mathis, Kristian, Clausen, Bjorn, & Barnett, Matthew. Dependence of twinned volume fraction on loading mode and Schmid factor in randomly textured magnesium. United States. https://doi.org/10.1016/j.actamat.2017.03.017
Capek, Jan, Mathis, Kristian, Clausen, Bjorn, and Barnett, Matthew. Thu . "Dependence of twinned volume fraction on loading mode and Schmid factor in randomly textured magnesium". United States. https://doi.org/10.1016/j.actamat.2017.03.017. https://www.osti.gov/servlets/purl/1459810.
@article{osti_1459810,
title = {Dependence of twinned volume fraction on loading mode and Schmid factor in randomly textured magnesium},
author = {Capek, Jan and Mathis, Kristian and Clausen, Bjorn and Barnett, Matthew},
abstractNote = {Here, the twinning activity in random textured cast magnesium during room temperature tension and compression tests was monitored by neutron diffraction (ND). Variation of integrated intensities of selected diffraction peaks, characterizing the twinned volume in particularly oriented grains was compared with calculated Schmid factors for extension twinning of these grains. It is shown that in tension there is a direct proportion between the twinned volume and the maximum value of the Schmid factor for a given grain orientation. In contrast, in compression this relation is not valid. The twinned volume in this case is influenced by both deviation of the grain from the ideal orientation and its rotation around the c-axis. The experimental results are in good agreement with those obtained from elasto-plastic self-consistent (EPSC) modeling.},
doi = {10.1016/j.actamat.2017.03.017},
url = {https://www.osti.gov/biblio/1459810}, journal = {Acta Materialia},
issn = {1359-6454},
number = C,
volume = 130,
place = {United States},
year = {2017},
month = {3}
}

Journal Article:

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Cited by: 12 works
Citation information provided by
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