Glass formation for iron-based alloys by combining kinetic and thermodynamic parameters

被引：2

作者：

Willy, J. H. ^{[1
]}

Wang Gang ^{[1
]}

Liu Zhong-wu ^{[1
]}

机构：

[1] S China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China

来源：

JOURNAL OF CENTRAL SOUTH UNIVERSITY | 2013年 / 20卷 / 02期

基金：

中国国家自然科学基金;

关键词：

metallic glass; glass-forming ability; iron-based alloys; critical cooling rate; CRITICAL COOLING RATE; FORMING ABILITY CRITERION; BULK METALLIC GLASSES; DELTA-H-M; SUPERCOOLED LIQUID; VISCOSITY; BEHAVIOR; TI;

D O I：

10.1007/s11771-013-1487-x

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The glass formation was intensively studied for Fe-based alloys. Parameters defining kinetics and thermodynamic behavior of crystallization were calculated using calorimetric measurements and physical properties of constituent elements. It is found that the critical cooling rate R (c) estimated by combining kinetic and thermodynamic parameters highly correlates with measured R (c) found in literatures with correlation coefficient R (2)=0.944, and alloy compositions with high melting enthalpy Delta H (m) can easily form glass even without high undercooling and high value of the beta-parameter of Turnbull's theory, revealing that the glass formation in this group of alloys is mostly controlled by growth limitation. This combination of kinetic and thermodynamic parameters can be used to determine alloy composition with good glass forming ability in Fe-based alloys just using physical properties of alloying elements and calorimetric measurements.

引用

页码：293 / 300

页数：8

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