The Structural Evolution of Al86Ni9La5 Glassy Ribbons during Milling at Room and Cryogenic Temperatures
Melt-spun metallic Al86Ni9La5 glassy ribbons solidified at different circumferential speeds (Sc) were subjected to high-energy ball milling at room and cryogenic temperatures. Crystallization induced by milling was found in the Al86Ni9La5 solidified at lower circumferential speed (Sc = 14.7 m/s), wh...
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MDPI AG
2018-10-01
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| Series: | Materials |
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| Online Access: | http://www.mdpi.com/1996-1944/11/10/1956 |
| _version_ | 1811323511605559296 |
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| author | Zhicheng Yan Yan Liu Shaopeng Pan Yihua Hu Jing Pang Weimin Wang |
| author_facet | Zhicheng Yan Yan Liu Shaopeng Pan Yihua Hu Jing Pang Weimin Wang |
| author_sort | Zhicheng Yan |
| collection | DOAJ |
| description | Melt-spun metallic Al86Ni9La5 glassy ribbons solidified at different circumferential speeds (Sc) were subjected to high-energy ball milling at room and cryogenic temperatures. Crystallization induced by milling was found in the Al86Ni9La5 solidified at lower circumferential speed (Sc = 14.7 m/s), while the Al86Ni9La5 with Sc = 36.6 m/s kept amorphous. Besides, a trend of structural rejuvenation during milling process was observed, as the onset temperatures (Tx1, Tx2) and the crystallization enthalpies (ΔH1, ΔH2) first decreased and then increased along with the milling time. We explored the structural origin of crystallization by ab initio molecular dynamic simulations and found that the tricapped trigonal prism (TTP) Ni-centered clusters with a higher frequency in samples solidified at a lower cooling rate, which tend to link into medium-range orders (MROs), may promote crystallization by initiating the shear bands during milling. Based on the deformation mechanism and crush of metallic glasses, we presented a qualitative model to explain the structural rejuvenation during milling. |
| first_indexed | 2024-04-13T13:56:27Z |
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| id | doaj.art-386c3cb6ab5c49b698beb5eafeee2063 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-04-13T13:56:27Z |
| publishDate | 2018-10-01 |
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| series | Materials |
| spelling | doaj.art-386c3cb6ab5c49b698beb5eafeee20632022-12-22T02:44:10ZengMDPI AGMaterials1996-19442018-10-011110195610.3390/ma11101956ma11101956The Structural Evolution of Al86Ni9La5 Glassy Ribbons during Milling at Room and Cryogenic TemperaturesZhicheng Yan0Yan Liu1Shaopeng Pan2Yihua Hu3Jing Pang4Weimin Wang5Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, ChinaCollege of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, ChinaCollege of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaKey Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, ChinaQingdao Yunlu Advanced Materials Technology Company Limited, Lancun Town, Qingdao 266232, ChinaKey Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, ChinaMelt-spun metallic Al86Ni9La5 glassy ribbons solidified at different circumferential speeds (Sc) were subjected to high-energy ball milling at room and cryogenic temperatures. Crystallization induced by milling was found in the Al86Ni9La5 solidified at lower circumferential speed (Sc = 14.7 m/s), while the Al86Ni9La5 with Sc = 36.6 m/s kept amorphous. Besides, a trend of structural rejuvenation during milling process was observed, as the onset temperatures (Tx1, Tx2) and the crystallization enthalpies (ΔH1, ΔH2) first decreased and then increased along with the milling time. We explored the structural origin of crystallization by ab initio molecular dynamic simulations and found that the tricapped trigonal prism (TTP) Ni-centered clusters with a higher frequency in samples solidified at a lower cooling rate, which tend to link into medium-range orders (MROs), may promote crystallization by initiating the shear bands during milling. Based on the deformation mechanism and crush of metallic glasses, we presented a qualitative model to explain the structural rejuvenation during milling.http://www.mdpi.com/1996-1944/11/10/1956metallic glassmillingcrystallizationstructural rejuvenationshear band |
| spellingShingle | Zhicheng Yan Yan Liu Shaopeng Pan Yihua Hu Jing Pang Weimin Wang The Structural Evolution of Al86Ni9La5 Glassy Ribbons during Milling at Room and Cryogenic Temperatures Materials metallic glass milling crystallization structural rejuvenation shear band |
| title | The Structural Evolution of Al86Ni9La5 Glassy Ribbons during Milling at Room and Cryogenic Temperatures |
| title_full | The Structural Evolution of Al86Ni9La5 Glassy Ribbons during Milling at Room and Cryogenic Temperatures |
| title_fullStr | The Structural Evolution of Al86Ni9La5 Glassy Ribbons during Milling at Room and Cryogenic Temperatures |
| title_full_unstemmed | The Structural Evolution of Al86Ni9La5 Glassy Ribbons during Milling at Room and Cryogenic Temperatures |
| title_short | The Structural Evolution of Al86Ni9La5 Glassy Ribbons during Milling at Room and Cryogenic Temperatures |
| title_sort | structural evolution of al86ni9la5 glassy ribbons during milling at room and cryogenic temperatures |
| topic | metallic glass milling crystallization structural rejuvenation shear band |
| url | http://www.mdpi.com/1996-1944/11/10/1956 |
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