In Situ Characterization of the Effect of Twin-Microstructure Interactions on {1 0 <span style="text-decoration: overline">1</span> 2} Tension and {1 0 <span style="text-decoration: overline">1</span> 1} Contraction Twin Nucleation, Growth and Damage in Magnesium
Through in situ electron backscatter diffraction (EBSD) experiments, this paper uncovers dominant damage mechanisms in traditional magnesium alloys exhibiting deformation twinning. The findings emphasize the level of deleterious strain incompatibility induced by twin interaction with other deformati...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-10-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/10/11/1403 |
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| author | William D. Russell Nicholas R. Bratton YubRaj Paudel Robert D. Moser Zackery B. McClelland Christopher D. Barrett Andrew L. Oppedal Wilburn R. Whittington Hongjoo Rhee Shiraz Mujahid Bhasker Paliwal Sven C. Vogel Haitham El Kadiri |
| author_facet | William D. Russell Nicholas R. Bratton YubRaj Paudel Robert D. Moser Zackery B. McClelland Christopher D. Barrett Andrew L. Oppedal Wilburn R. Whittington Hongjoo Rhee Shiraz Mujahid Bhasker Paliwal Sven C. Vogel Haitham El Kadiri |
| author_sort | William D. Russell |
| collection | DOAJ |
| description | Through in situ electron backscatter diffraction (EBSD) experiments, this paper uncovers dominant damage mechanisms in traditional magnesium alloys exhibiting deformation twinning. The findings emphasize the level of deleterious strain incompatibility induced by twin interaction with other deformation modes and microstructural defects. A double fiber obtained by plane-strain extrusion as a starting texture of AM30 magnesium alloy offered the opportunity to track deformation by EBSD in neighboring grains where some undergo profuse {1 0 <span style="text-decoration: overline;">1</span> 2} twinning and others do not. For a tensile loading applied along extrusion transverse (ET) direction, those experiencing profuse twinning reveal a major effect of grain boundaries on non-Schmid behavior affecting twin variant selection and growth. Similarly, a neighboring grain, with its 〈<i>c</i>〉-axis oriented nearly perpendicular to tensile loading, showed an abnormally early nucleation of {1 0 <span style="text-decoration: overline;">1</span> 1} contraction twins (2% strain) while the same {1 0 <span style="text-decoration: overline;">1</span> 1} twin mode triggering under 〈<i>c</i>〉-axis uniaxial compression have higher value of critical resolved shear stress exceeding the values for pyramidal 〈<i>c</i> + <i>a</i>〉 dislocations. The difference in nucleation behavior of contraction vs. compression {1 0 <span style="text-decoration: overline;">1</span> 1} twins is attributed to the hydrostatic stresses that promote the required atomic shuffles at the core of twinning disconnections. |
| first_indexed | 2024-03-10T15:25:18Z |
| format | Article |
| id | doaj.art-196b55143d6c4fa5ae32656f16e6c856 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T15:25:18Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-196b55143d6c4fa5ae32656f16e6c8562023-11-20T18:06:42ZengMDPI AGMetals2075-47012020-10-011011140310.3390/met10111403In Situ Characterization of the Effect of Twin-Microstructure Interactions on {1 0 <span style="text-decoration: overline">1</span> 2} Tension and {1 0 <span style="text-decoration: overline">1</span> 1} Contraction Twin Nucleation, Growth and Damage in MagnesiumWilliam D. Russell0Nicholas R. Bratton1YubRaj Paudel2Robert D. Moser3Zackery B. McClelland4Christopher D. Barrett5Andrew L. Oppedal6Wilburn R. Whittington7Hongjoo Rhee8Shiraz Mujahid9Bhasker Paliwal10Sven C. Vogel11Haitham El Kadiri12Center for Advanced Vehicular Systems, Mississippi State University, Mississippi State, MS 39762, USACenter for Advanced Vehicular Systems, Mississippi State University, Mississippi State, MS 39762, USACenter for Advanced Vehicular Systems, Mississippi State University, Mississippi State, MS 39762, USAU.S. Army Corps of Engineers, Engineer Research and Development Center, Vicksburg, MS 39180, USAU.S. Army Corps of Engineers, Engineer Research and Development Center, Vicksburg, MS 39180, USACenter for Advanced Vehicular Systems, Mississippi State University, Mississippi State, MS 39762, USACenter for Advanced Vehicular Systems, Mississippi State University, Mississippi State, MS 39762, USACenter for Advanced Vehicular Systems, Mississippi State University, Mississippi State, MS 39762, USACenter for Advanced Vehicular Systems, Mississippi State University, Mississippi State, MS 39762, USACenter for Advanced Vehicular Systems, Mississippi State University, Mississippi State, MS 39762, USACenter for Advanced Vehicular Systems, Mississippi State University, Mississippi State, MS 39762, USAMaterials Science & Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USACenter for Advanced Vehicular Systems, Mississippi State University, Mississippi State, MS 39762, USAThrough in situ electron backscatter diffraction (EBSD) experiments, this paper uncovers dominant damage mechanisms in traditional magnesium alloys exhibiting deformation twinning. The findings emphasize the level of deleterious strain incompatibility induced by twin interaction with other deformation modes and microstructural defects. A double fiber obtained by plane-strain extrusion as a starting texture of AM30 magnesium alloy offered the opportunity to track deformation by EBSD in neighboring grains where some undergo profuse {1 0 <span style="text-decoration: overline;">1</span> 2} twinning and others do not. For a tensile loading applied along extrusion transverse (ET) direction, those experiencing profuse twinning reveal a major effect of grain boundaries on non-Schmid behavior affecting twin variant selection and growth. Similarly, a neighboring grain, with its 〈<i>c</i>〉-axis oriented nearly perpendicular to tensile loading, showed an abnormally early nucleation of {1 0 <span style="text-decoration: overline;">1</span> 1} contraction twins (2% strain) while the same {1 0 <span style="text-decoration: overline;">1</span> 1} twin mode triggering under 〈<i>c</i>〉-axis uniaxial compression have higher value of critical resolved shear stress exceeding the values for pyramidal 〈<i>c</i> + <i>a</i>〉 dislocations. The difference in nucleation behavior of contraction vs. compression {1 0 <span style="text-decoration: overline;">1</span> 1} twins is attributed to the hydrostatic stresses that promote the required atomic shuffles at the core of twinning disconnections.https://www.mdpi.com/2075-4701/10/11/1403EBSDmagnesiumdeformation twinningtexturedamage initiation |
| spellingShingle | William D. Russell Nicholas R. Bratton YubRaj Paudel Robert D. Moser Zackery B. McClelland Christopher D. Barrett Andrew L. Oppedal Wilburn R. Whittington Hongjoo Rhee Shiraz Mujahid Bhasker Paliwal Sven C. Vogel Haitham El Kadiri In Situ Characterization of the Effect of Twin-Microstructure Interactions on {1 0 <span style="text-decoration: overline">1</span> 2} Tension and {1 0 <span style="text-decoration: overline">1</span> 1} Contraction Twin Nucleation, Growth and Damage in Magnesium Metals EBSD magnesium deformation twinning texture damage initiation |
| title | In Situ Characterization of the Effect of Twin-Microstructure Interactions on {1 0 <span style="text-decoration: overline">1</span> 2} Tension and {1 0 <span style="text-decoration: overline">1</span> 1} Contraction Twin Nucleation, Growth and Damage in Magnesium |
| title_full | In Situ Characterization of the Effect of Twin-Microstructure Interactions on {1 0 <span style="text-decoration: overline">1</span> 2} Tension and {1 0 <span style="text-decoration: overline">1</span> 1} Contraction Twin Nucleation, Growth and Damage in Magnesium |
| title_fullStr | In Situ Characterization of the Effect of Twin-Microstructure Interactions on {1 0 <span style="text-decoration: overline">1</span> 2} Tension and {1 0 <span style="text-decoration: overline">1</span> 1} Contraction Twin Nucleation, Growth and Damage in Magnesium |
| title_full_unstemmed | In Situ Characterization of the Effect of Twin-Microstructure Interactions on {1 0 <span style="text-decoration: overline">1</span> 2} Tension and {1 0 <span style="text-decoration: overline">1</span> 1} Contraction Twin Nucleation, Growth and Damage in Magnesium |
| title_short | In Situ Characterization of the Effect of Twin-Microstructure Interactions on {1 0 <span style="text-decoration: overline">1</span> 2} Tension and {1 0 <span style="text-decoration: overline">1</span> 1} Contraction Twin Nucleation, Growth and Damage in Magnesium |
| title_sort | in situ characterization of the effect of twin microstructure interactions on 1 0 span style text decoration overline 1 span 2 tension and 1 0 span style text decoration overline 1 span 1 contraction twin nucleation growth and damage in magnesium |
| topic | EBSD magnesium deformation twinning texture damage initiation |
| url | https://www.mdpi.com/2075-4701/10/11/1403 |
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