Thermal processing map and thermoplastic forming map of Zr-based bulk metallic glass in the supercooled liquid region | |
Li, Jinling1,2; Li, Chunyan1,2; Wang, Shunping1; Wang, Haibo1; Kou, Shengzhong1,2 | |
刊名 | JOURNAL OF NON-CRYSTALLINE SOLIDS |
2021-10-15 | |
卷号 | 570 |
关键词 | Rheological behavior Flow stress Viscosity Thermal  processing map Thermoplastic ferming map |
ISSN号 | 0022-3093 |
DOI | 10.1016/j.jnoncrysol.2021.121008 |
英文摘要 | In order to make the bulk metallic glass (BMG) better used in micro electro mechanical system (MEMS), the rheological behavior of (Zr0.6336Cu0.1452Ni0.1012Al0.12)99.4Y0.6 BMG in the supercooled liquid phase region (SCLR) was studied, and the thermal processing map and the thermoplastic forming map were constructed in this paper. The Time-Temperature-Transformation (TTT) curve was established according to the crystallization incubation time of (Zr0.6336Cu0.1452Ni0.1012Al0.12)99.4Y0.6 BMG at different temperatures in the SCLR, which provided a theoretical basis for the time and temperature selection of thermal forming. Furthermore, the results show that the flow stress and viscosity coefficient of the BMG in the SCLR are strongly dependent on temperature and strain rate. The flow stress tends to decrease with the increase of temperature and the decrease of strain rate. When the temperature is 703 K with the strain rate of 5 x 10-4 s-1, the flow stress value is only 5 MPa. Meanwhile, the viscosity coefficient of the alloy remain approximately constant at 703 K, showing Newtonian fluid characteristic. It can be concluded that the alloy has excellent thermal processing property and thermoplastic forming (TPF) ability at temperature of 698-703 K, and thermoplastic forming ability is less affected by the strain rate within this temperature range. |
WOS研究方向 | Materials Science |
语种 | 英语 |
出版者 | ELSEVIER |
WOS记录号 | WOS:000687330100003 |
内容类型 | 期刊论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/148613] |
专题 | 材料科学与工程学院 |
作者单位 | 1.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China; |
推荐引用方式 GB/T 7714 | Li, Jinling,Li, Chunyan,Wang, Shunping,et al. Thermal processing map and thermoplastic forming map of Zr-based bulk metallic glass in the supercooled liquid region[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS,2021,570. |
APA | Li, Jinling,Li, Chunyan,Wang, Shunping,Wang, Haibo,&Kou, Shengzhong.(2021).Thermal processing map and thermoplastic forming map of Zr-based bulk metallic glass in the supercooled liquid region.JOURNAL OF NON-CRYSTALLINE SOLIDS,570. |
MLA | Li, Jinling,et al."Thermal processing map and thermoplastic forming map of Zr-based bulk metallic glass in the supercooled liquid region".JOURNAL OF NON-CRYSTALLINE SOLIDS 570(2021). |
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