Surface Crystallization in Mg-Based Bulk Metallic Glass during Copper Mold Casting
The localized crystallization of Mg54Cu28Ag7Y11 bulk metallic glass (BMG) in the injection casting process using a copper mold was investigated. It has been found that several crystalline phases were formed close to the as-cast surface but did not exist in the internal part of the BMG plate. It is a...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2014/798479 |
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| _version_ | 1832566126085668864 |
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| author | Xin Wang |
| author_facet | Xin Wang |
| author_sort | Xin Wang |
| collection | DOAJ |
| description | The localized crystallization of Mg54Cu28Ag7Y11 bulk metallic glass (BMG) in the injection casting process using a copper mold was investigated. It has been found that several crystalline phases were formed close to the as-cast surface but did not exist in the internal part of the BMG plate. It is abnormal that the as-cast surface is partially crystallized with higher cooling rate than that of inside. Overheating of the melt and nucleation induced by the surface of copper mold play key roles in the abnormal crystallization. It is suggested that the function of copper mold to trigger heterogeneous nucleation cannot be totally ignored, although it provides the high cooling rate for the glass formation during casting. |
| format | Article |
| id | doaj-art-4fd96d873c104dcda718d6caeb17325c |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-4fd96d873c104dcda718d6caeb17325c2025-02-03T01:04:55ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422014-01-01201410.1155/2014/798479798479Surface Crystallization in Mg-Based Bulk Metallic Glass during Copper Mold CastingXin Wang0School of Material Science and Engineering, Hebei University of Technology, Dingzigu Road, Hongqiao District, Tianjin 300130, ChinaThe localized crystallization of Mg54Cu28Ag7Y11 bulk metallic glass (BMG) in the injection casting process using a copper mold was investigated. It has been found that several crystalline phases were formed close to the as-cast surface but did not exist in the internal part of the BMG plate. It is abnormal that the as-cast surface is partially crystallized with higher cooling rate than that of inside. Overheating of the melt and nucleation induced by the surface of copper mold play key roles in the abnormal crystallization. It is suggested that the function of copper mold to trigger heterogeneous nucleation cannot be totally ignored, although it provides the high cooling rate for the glass formation during casting.http://dx.doi.org/10.1155/2014/798479 |
| spellingShingle | Xin Wang Surface Crystallization in Mg-Based Bulk Metallic Glass during Copper Mold Casting Advances in Materials Science and Engineering |
| title | Surface Crystallization in Mg-Based Bulk Metallic Glass during Copper Mold Casting |
| title_full | Surface Crystallization in Mg-Based Bulk Metallic Glass during Copper Mold Casting |
| title_fullStr | Surface Crystallization in Mg-Based Bulk Metallic Glass during Copper Mold Casting |
| title_full_unstemmed | Surface Crystallization in Mg-Based Bulk Metallic Glass during Copper Mold Casting |
| title_short | Surface Crystallization in Mg-Based Bulk Metallic Glass during Copper Mold Casting |
| title_sort | surface crystallization in mg based bulk metallic glass during copper mold casting |
| url | http://dx.doi.org/10.1155/2014/798479 |
| work_keys_str_mv | AT xinwang surfacecrystallizationinmgbasedbulkmetallicglassduringcoppermoldcasting |