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Title: Effect of alloying elements in magnesium on deformation twin characteristics

Abstract

HCP magnesium metals are widely used in different industries due to their low density and high specific strength. Their applicability is restricted due to poor formability and high anisotropy in deformation behavior. The formability of magnesium can be improved by alloying additions and this modification can affect macroscopic plastic anisotropy. Alloying additions can also significantly control the twinning process. In this work we use a crystal plasticity based Fast Fourier Transform model to characterize deformation twinning in different alloy types. In the model, the influence of alloying additions is represented through their effect on the critical resolved shear stress (CRSS) values for all slip and twinning modes. From this study, we build an understanding of the influence of alloying elements on twin growth and twin transmission behavior. Lastly, a new plastic anisotropy measure is proposed to quantify the effects of alloying elements on some important twinning characteristics in magnesium alloys.

Authors:
ORCiD logo [1];  [1]; ORCiD logo [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
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) (SC-22)
OSTI Identifier:
1526945
Report Number(s):
LA-UR-6-26887
Journal ID: ISSN 1545-4150
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Magnesium Technology
Additional Journal Information:
Journal Volume: 2017; Journal ID: ISSN 1545-4150
Publisher:
Springer Nature
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Mg alloys; Deformation twins; Local stresses; Crystal plasticity

Citation Formats

Mariyappan, Arul Kumar, Beyerlein, Irene Jane, Lebensohn, Ricardo A., and Tome, Carlos. Effect of alloying elements in magnesium on deformation twin characteristics. United States: N. p., 2017. Web. doi:10.1007/978-3-319-52392-7_25.
Mariyappan, Arul Kumar, Beyerlein, Irene Jane, Lebensohn, Ricardo A., & Tome, Carlos. Effect of alloying elements in magnesium on deformation twin characteristics. United States. doi:10.1007/978-3-319-52392-7_25.
Mariyappan, Arul Kumar, Beyerlein, Irene Jane, Lebensohn, Ricardo A., and Tome, Carlos. Thu . "Effect of alloying elements in magnesium on deformation twin characteristics". United States. doi:10.1007/978-3-319-52392-7_25. https://www.osti.gov/servlets/purl/1526945.
@article{osti_1526945,
title = {Effect of alloying elements in magnesium on deformation twin characteristics},
author = {Mariyappan, Arul Kumar and Beyerlein, Irene Jane and Lebensohn, Ricardo A. and Tome, Carlos},
abstractNote = {HCP magnesium metals are widely used in different industries due to their low density and high specific strength. Their applicability is restricted due to poor formability and high anisotropy in deformation behavior. The formability of magnesium can be improved by alloying additions and this modification can affect macroscopic plastic anisotropy. Alloying additions can also significantly control the twinning process. In this work we use a crystal plasticity based Fast Fourier Transform model to characterize deformation twinning in different alloy types. In the model, the influence of alloying additions is represented through their effect on the critical resolved shear stress (CRSS) values for all slip and twinning modes. From this study, we build an understanding of the influence of alloying elements on twin growth and twin transmission behavior. Lastly, a new plastic anisotropy measure is proposed to quantify the effects of alloying elements on some important twinning characteristics in magnesium alloys.},
doi = {10.1007/978-3-319-52392-7_25},
journal = {Magnesium Technology},
issn = {1545-4150},
number = ,
volume = 2017,
place = {United States},
year = {2017},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

Figures / Tables:

Fig. 1 Fig. 1: Schematic representation of tri-crystal FFT simulation setup comprised of grain 1 with a twin lamella that has terminated at the grain boundary formed by the neighboring grains, grain 2. The buffer layer surrounds the tri-crystal and has a random texture

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Works referenced in this record:

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.