Temperature Effect on Fracture of a Zr-Based Bulk Metallic Glass
Bulk metallic glass (BMGs) is highly expected for applications in engineering structures due to their superior mechanical properties. The fracture toughness of some BMGs was investigated at cryogenic and at elevated temperatures. However, the mechanism of the temperature-dependence of BMG toughness...
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| Format: | Article |
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MDPI AG
2020-05-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/10/2391 |
| _version_ | 1797567271488454656 |
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| author | Na Yang Jun Yi Yu Hang Yang Bo Huang Yan Dong Jia Sheng Zhong Kou Gang Wang |
| author_facet | Na Yang Jun Yi Yu Hang Yang Bo Huang Yan Dong Jia Sheng Zhong Kou Gang Wang |
| author_sort | Na Yang |
| collection | DOAJ |
| description | Bulk metallic glass (BMGs) is highly expected for applications in engineering structures due to their superior mechanical properties. The fracture toughness of some BMGs was investigated at cryogenic and at elevated temperatures. However, the mechanism of the temperature-dependence of BMG toughness still remains elusive. Here, we characterized the fracture toughness of Zr<sub>61</sub>Ti<sub>2</sub>Cu<sub>25</sub>Al<sub>12</sub> BMG prepared with Zr elemental pieces with low Hf content at temperatures ranging from 134 to 623 K. The relaxation spectrum of the BMG was characterized by a dynamic mechanical analysis using the same temperature range. We found that the BMG is tougher at onset temperatures of the relaxation processes than at peak temperatures. The temperature-dependent fracture toughness of the BMG is strongly dependent on its relaxation spectrum. |
| first_indexed | 2024-03-10T19:39:18Z |
| format | Article |
| id | doaj.art-10be64fe22244039adb017fc0b975871 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T19:39:18Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-10be64fe22244039adb017fc0b9758712023-11-20T01:23:17ZengMDPI AGMaterials1996-19442020-05-011310239110.3390/ma13102391Temperature Effect on Fracture of a Zr-Based Bulk Metallic GlassNa Yang0Jun Yi1Yu Hang Yang2Bo Huang3Yan Dong Jia4Sheng Zhong Kou5Gang Wang6School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaInstitute of Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaInstitute of Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaInstitute of Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaInstitute of Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaSchool of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaInstitute of Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaBulk metallic glass (BMGs) is highly expected for applications in engineering structures due to their superior mechanical properties. The fracture toughness of some BMGs was investigated at cryogenic and at elevated temperatures. However, the mechanism of the temperature-dependence of BMG toughness still remains elusive. Here, we characterized the fracture toughness of Zr<sub>61</sub>Ti<sub>2</sub>Cu<sub>25</sub>Al<sub>12</sub> BMG prepared with Zr elemental pieces with low Hf content at temperatures ranging from 134 to 623 K. The relaxation spectrum of the BMG was characterized by a dynamic mechanical analysis using the same temperature range. We found that the BMG is tougher at onset temperatures of the relaxation processes than at peak temperatures. The temperature-dependent fracture toughness of the BMG is strongly dependent on its relaxation spectrum.https://www.mdpi.com/1996-1944/13/10/2391bulk metallic glasstoughnessrelaxationshear band |
| spellingShingle | Na Yang Jun Yi Yu Hang Yang Bo Huang Yan Dong Jia Sheng Zhong Kou Gang Wang Temperature Effect on Fracture of a Zr-Based Bulk Metallic Glass Materials bulk metallic glass toughness relaxation shear band |
| title | Temperature Effect on Fracture of a Zr-Based Bulk Metallic Glass |
| title_full | Temperature Effect on Fracture of a Zr-Based Bulk Metallic Glass |
| title_fullStr | Temperature Effect on Fracture of a Zr-Based Bulk Metallic Glass |
| title_full_unstemmed | Temperature Effect on Fracture of a Zr-Based Bulk Metallic Glass |
| title_short | Temperature Effect on Fracture of a Zr-Based Bulk Metallic Glass |
| title_sort | temperature effect on fracture of a zr based bulk metallic glass |
| topic | bulk metallic glass toughness relaxation shear band |
| url | https://www.mdpi.com/1996-1944/13/10/2391 |
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