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最近APL上两篇关于模量关联的文章
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最近接连发表的两篇关于模量关联的文章。 The correlation between shear elastic modulus and glass transition temperature of bulk metallic glasses Zhibin Lu,1 Jiangong Li,1,a Hang Shao,1 H. Gleiter,2 and Xia Ni1 1MOE Key Laboratory for Magnetism and Magnetic Materials, Institute of Materials Science and Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China 2Institut für Nanotechnologie, Forschungszentrum Karlsruhe, Postfach 3640, D-76021 Karlsruhe, Germany Received 1 December 2008; accepted 12 February 2009; published online 6 March 2009 Based on Varshni equation, the shear elastic modulus at the glass transition temperature GTg and the shear elastic modulus at 0 K G0 were calculated from the elastic modulus measured at room temperature for various bulk metallic glasses BMGs. The GTg /G0 ratios for various BMGs are almost the same and have a value around 0.85. This unique correlation implies that the glass transition occurs when the shear modulus of a BMG decreases to about 85% of G0. This correlation between shear modulus and glass transition is of significance in understanding the glass transition of BMGs. © 2009 American Institute of Physics. DOI: 10.1063/1.3093879 Correlation between average melting temperature and glass transition temperature in metallic glasses Zhibin Lu and Jiangong Lia MOE Key Laboratory for Magnetism and Magnetic Materials, Institute of Materials Science and Engineering, Lanzhou University, Lanzhou 730000, China Received 17 November 2008; accepted 22 January 2009; published online 12 February 2009 The correlation between average melting temperature Tm and glass transition temperature Tg in metallic glasses MGs is analyzed. A linear relationship, Tg=0.385Tm, is observed. This correlation agrees with Egami’s suggestion Rep. Prog. Phys. 47, 1601 1984. The prediction of Tg from Tm through the relationship Tg=0.385Tm has been tested using experimental data obtained on a large number of MGs. This relationship can be used to predict and design MGs with a desired Tg. © 2009 American Institute of Physics. DOI: 10.1063/1.3081028 [ Last edited by hslining on 2009-9-21 at 23:28 ] |
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2009-03-14 21:16
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