Effect of partial crystallisation on mechanical properties of (Cu 42Zr 42Al 8Ag 8) 99.5Si 0.5 bulk metallic glass

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Title:	Effect of partial crystallisation on mechanical properties of (Cu 42Zr 42Al 8Ag 8) 99.5Si 0.5 bulk metallic glass
Authors:	蔡佩樺;Tsai, P H;Wang, S K;Jian, S R;Lee, I S;Chang, Y Z;Lin, Y Z;Jang, J S C;Li, C
Contributors:	工學院材料科學與工程研究所
Keywords:	Bulk metallic glass;Crystallisation;Isothermal annealing;Mechanical properties
Date:	2012-02-01
Issue Date:	2026-04-23 11:32:01 (UTC+8)
Publisher:	Maney Publishing;London: Taylor & Francis
Abstract:	摘要： The (Cu 42 Zr 42 Al 8 Ag 8 ) 99·5 Si 0·5 bulk metallic glass (BMG) rods, 3 mm in diameter, with different fractions of nanocrystalline phase were prepared by isothermal annealing the as cast BMG rods at the temperature within the supercooled temperature region for different time periods in vacuum respectively. The result of hardness and compression test revealed that the hardness and yield strength of compression test all exhibit an increasing trend with crystallisation fraction. The maximum 1990 MPa yield strength, 2100 MPa fracture strength and 5% failure strain occur at the 50% crystallised BMG sample (with an average size about 60 nm). This suggests that these homogeneous distributed nanocrystals embedded in the amorphous matrix may act as a network obstacle in the glassy matrix to restrict the propagation of highly localised shear banding, avoiding catastrophic shearing-off through the whole sample and result in improving the plasticity. 出版者： London: Taylor & Francis 出版日期： 2012-02-01 出處： Materials science and technology, 2012-02, Vol.27 (1), p.43-45 版權： 2012 W. S. Maney & Son Ltd. 2012 版權： (©) 2012 W. S. Maney & Son Ltd. 識別號： ISSN: 1066-7857 識別號： ISSN: 0267-0836 識別號： EISSN: 1753-5557 識別號： EISSN: 1743-2847 識別號： DOI: 10.1179/175355511X13240279341083 識別號： CODEN: MSCTEP
Appears in Collections:	[Institute of Materials Science and Engineering] journal & Dissertation

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