Comparative study of bulk metallic glass composites with high-volume-fractioned dendritic and spherical b. c. c. phase precipitates
A dendritic β-phase reinforced bulk metallic glass (BMG) composite named as D2 was prepared by rapid quenching of a homogenous Zr60Ti14.67Nb5.33Cu5.56Ni4.44Be10 melt, and characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) observation and room-temperature compressio...
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| Format: | Article |
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Foundry Journal Agency
2015-05-01
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| Series: | China Foundry |
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| Online Access: | http://ff.foundryworld.com/uploadfile/2015061156306957.pdf |
| _version_ | 1818263832352522240 |
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| author | Guo-yuan Sun Yong Li |
| author_facet | Guo-yuan Sun Yong Li |
| author_sort | Guo-yuan Sun |
| collection | DOAJ |
| description | A dendritic β-phase reinforced bulk metallic glass (BMG) composite named as D2 was prepared by rapid quenching of a homogenous Zr60Ti14.67Nb5.33Cu5.56Ni4.44Be10 melt, and characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) observation and room-temperature compression test. The microstructure and mechanical properties were compared with those of the spherical β-phase reinforced composite named as composite S2. It was found that the composite D2 contains β-phase dendrites up to 56% in volume-fraction, and exhibits a ductile compressive behavior with plastic strain of 12.7%. As the high-volume-fractioned β-phase dendrites transferred to coarse spherical particles of about 20 μm in diameter in the composite S2, a much improved plastic strain up to 20.4% can be achieved. Micrographs of the fractured samples reveal different interaction modes of the propagating shear bands with the dendritic and spherical β phase inclusions, resulting in different shear strains in the composite samples. The matrix of composite S2 undergoes a significantly larger shear strain than that of the composite D2 before ultimate failure, which is thought to be mainly responsible for the greatly increased global plastic strain of the S2 relative to D2. |
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| id | doaj.art-a108436ad79d421fb42a9edb33d5154f |
| institution | Directory Open Access Journal |
| issn | 1672-6421 1672-6421 |
| language | English |
| last_indexed | 2024-12-12T19:25:17Z |
| publishDate | 2015-05-01 |
| publisher | Foundry Journal Agency |
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| series | China Foundry |
| spelling | doaj.art-a108436ad79d421fb42a9edb33d5154f2022-12-22T00:14:32ZengFoundry Journal AgencyChina Foundry1672-64211672-64212015-05-01122169172Comparative study of bulk metallic glass composites with high-volume-fractioned dendritic and spherical b. c. c. phase precipitatesGuo-yuan Sun0Yong Li1School of Mechanical Engineering, North China University of Water Conservancy and Electric Power, Zhengzhou 450011, ChinaSchool of Mechanical Engineering, North China University of Water Conservancy and Electric Power, Zhengzhou 450011, ChinaA dendritic β-phase reinforced bulk metallic glass (BMG) composite named as D2 was prepared by rapid quenching of a homogenous Zr60Ti14.67Nb5.33Cu5.56Ni4.44Be10 melt, and characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) observation and room-temperature compression test. The microstructure and mechanical properties were compared with those of the spherical β-phase reinforced composite named as composite S2. It was found that the composite D2 contains β-phase dendrites up to 56% in volume-fraction, and exhibits a ductile compressive behavior with plastic strain of 12.7%. As the high-volume-fractioned β-phase dendrites transferred to coarse spherical particles of about 20 μm in diameter in the composite S2, a much improved plastic strain up to 20.4% can be achieved. Micrographs of the fractured samples reveal different interaction modes of the propagating shear bands with the dendritic and spherical β phase inclusions, resulting in different shear strains in the composite samples. The matrix of composite S2 undergoes a significantly larger shear strain than that of the composite D2 before ultimate failure, which is thought to be mainly responsible for the greatly increased global plastic strain of the S2 relative to D2.http://ff.foundryworld.com/uploadfile/2015061156306957.pdfbulk metallic glass composite; high volume-fraction; dendrite spheroidization; shear strain; plasticity |
| spellingShingle | Guo-yuan Sun Yong Li Comparative study of bulk metallic glass composites with high-volume-fractioned dendritic and spherical b. c. c. phase precipitates China Foundry bulk metallic glass composite; high volume-fraction; dendrite spheroidization; shear strain; plasticity |
| title | Comparative study of bulk metallic glass composites with high-volume-fractioned dendritic and spherical b. c. c. phase precipitates |
| title_full | Comparative study of bulk metallic glass composites with high-volume-fractioned dendritic and spherical b. c. c. phase precipitates |
| title_fullStr | Comparative study of bulk metallic glass composites with high-volume-fractioned dendritic and spherical b. c. c. phase precipitates |
| title_full_unstemmed | Comparative study of bulk metallic glass composites with high-volume-fractioned dendritic and spherical b. c. c. phase precipitates |
| title_short | Comparative study of bulk metallic glass composites with high-volume-fractioned dendritic and spherical b. c. c. phase precipitates |
| title_sort | comparative study of bulk metallic glass composites with high volume fractioned dendritic and spherical b c c phase precipitates |
| topic | bulk metallic glass composite; high volume-fraction; dendrite spheroidization; shear strain; plasticity |
| url | http://ff.foundryworld.com/uploadfile/2015061156306957.pdf |
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