Microstructural Aspects of Grain Boundary Bulge in a Dynamically Recrystallized Mg-Al-Zn Alloy
Microstructural features of grain boundary bulging have been studied in a dynamically recrystallized (DRXed) Mg-Al-Zn alloy. Unidirectional compression was used to deform the specimens to different strains at 473 K (200 °C). Microstructural characterization of the deformed specimens was performed by...
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| Veröffentlicht in: | Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2010-07, Vol.41 (7), p.1864-1870 |
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| container_title | Metallurgical and materials transactions. A, Physical metallurgy and materials science |
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| creator | Sun, D.K. Chang, C.P. Kao, P.W. |
| description | Microstructural features of grain boundary bulging have been studied in a dynamically recrystallized (DRXed) Mg-Al-Zn alloy. Unidirectional compression was used to deform the specimens to different strains at 473 K (200 °C). Microstructural characterization of the deformed specimens was performed by using both scanning electron microscopy and transmission electron microscopy (TEM). From the present results, it is suggested that in AZ31 Mg alloy, the DRXed grain is developed from grain boundary bulging. After a grain boundary segment starts to bulge, a bridging dislocation wall forms and anchors the bulged grain boundary. During further deformation, the misorientation of this bridging wall gradually increases, then transforms into a grain boundary, and a DRXed grain forms. Electron backscattered diffraction was used to study the orientation relationship between bulges/DRXed grains and the parent grains, and no special orientation relationship was found between them. |
| doi_str_mv | 10.1007/s11661-010-0220-8 |
| format | Article |
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Unidirectional compression was used to deform the specimens to different strains at 473 K (200 °C). Microstructural characterization of the deformed specimens was performed by using both scanning electron microscopy and transmission electron microscopy (TEM). From the present results, it is suggested that in AZ31 Mg alloy, the DRXed grain is developed from grain boundary bulging. After a grain boundary segment starts to bulge, a bridging dislocation wall forms and anchors the bulged grain boundary. During further deformation, the misorientation of this bridging wall gradually increases, then transforms into a grain boundary, and a DRXed grain forms. Electron backscattered diffraction was used to study the orientation relationship between bulges/DRXed grains and the parent grains, and no special orientation relationship was found between them.</description><identifier>ISSN: 1073-5623</identifier><identifier>EISSN: 1543-1940</identifier><identifier>DOI: 10.1007/s11661-010-0220-8</identifier><identifier>CODEN: MMTAEB</identifier><language>eng</language><publisher>Boston: Springer US</publisher><subject>Alloys ; Annealing ; Applied sciences ; Characterization and Evaluation of Materials ; Chemistry and Materials Science ; Exact sciences and technology ; Grain boundaries ; Grain size ; Materials Science ; Metallic Materials ; Metallurgy ; Metals. Metallurgy ; Nanotechnology ; Structural Materials ; Surfaces and Interfaces ; Thin Films ; Twins</subject><ispartof>Metallurgical and materials transactions. 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A, Physical metallurgy and materials science</title><addtitle>Metall Mater Trans A</addtitle><description>Microstructural features of grain boundary bulging have been studied in a dynamically recrystallized (DRXed) Mg-Al-Zn alloy. Unidirectional compression was used to deform the specimens to different strains at 473 K (200 °C). Microstructural characterization of the deformed specimens was performed by using both scanning electron microscopy and transmission electron microscopy (TEM). From the present results, it is suggested that in AZ31 Mg alloy, the DRXed grain is developed from grain boundary bulging. After a grain boundary segment starts to bulge, a bridging dislocation wall forms and anchors the bulged grain boundary. During further deformation, the misorientation of this bridging wall gradually increases, then transforms into a grain boundary, and a DRXed grain forms. Electron backscattered diffraction was used to study the orientation relationship between bulges/DRXed grains and the parent grains, and no special orientation relationship was found between them.</description><subject>Alloys</subject><subject>Annealing</subject><subject>Applied sciences</subject><subject>Characterization and Evaluation of Materials</subject><subject>Chemistry and Materials Science</subject><subject>Exact sciences and technology</subject><subject>Grain boundaries</subject><subject>Grain size</subject><subject>Materials Science</subject><subject>Metallic Materials</subject><subject>Metallurgy</subject><subject>Metals. 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A, Physical metallurgy and materials science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sun, D.K.</au><au>Chang, C.P.</au><au>Kao, P.W.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Microstructural Aspects of Grain Boundary Bulge in a Dynamically Recrystallized Mg-Al-Zn Alloy</atitle><jtitle>Metallurgical and materials transactions. A, Physical metallurgy and materials science</jtitle><stitle>Metall Mater Trans A</stitle><date>2010-07-01</date><risdate>2010</risdate><volume>41</volume><issue>7</issue><spage>1864</spage><epage>1870</epage><pages>1864-1870</pages><issn>1073-5623</issn><eissn>1543-1940</eissn><coden>MMTAEB</coden><abstract>Microstructural features of grain boundary bulging have been studied in a dynamically recrystallized (DRXed) Mg-Al-Zn alloy. Unidirectional compression was used to deform the specimens to different strains at 473 K (200 °C). Microstructural characterization of the deformed specimens was performed by using both scanning electron microscopy and transmission electron microscopy (TEM). From the present results, it is suggested that in AZ31 Mg alloy, the DRXed grain is developed from grain boundary bulging. After a grain boundary segment starts to bulge, a bridging dislocation wall forms and anchors the bulged grain boundary. During further deformation, the misorientation of this bridging wall gradually increases, then transforms into a grain boundary, and a DRXed grain forms. Electron backscattered diffraction was used to study the orientation relationship between bulges/DRXed grains and the parent grains, and no special orientation relationship was found between them.</abstract><cop>Boston</cop><pub>Springer US</pub><doi>10.1007/s11661-010-0220-8</doi><tpages>7</tpages></addata></record> |
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| subjects | Alloys Annealing Applied sciences Characterization and Evaluation of Materials Chemistry and Materials Science Exact sciences and technology Grain boundaries Grain size Materials Science Metallic Materials Metallurgy Metals. Metallurgy Nanotechnology Structural Materials Surfaces and Interfaces Thin Films Twins |
| title | Microstructural Aspects of Grain Boundary Bulge in a Dynamically Recrystallized Mg-Al-Zn Alloy |
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