Thermal processing map and thermoplastic forming map of Zr-based bulk metallic glass in the supercooled liquid region

doi:10.1016/j.jnoncrysol.2021.121008

	Thermal processing map and thermoplastic forming map of Zr-based bulk metallic glass in the supercooled liquid region
	Li, Jinling 1,2; Li, Chunyan 1,2; Wang, Shunping 1; Wang, Haibo 1; Kou, Shengzhong 1,2
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).