Development of W-Reinforced Zr-Based Metallic Glass

被引：5

作者：

Terajima, Takeshi ^{[1
]}

Nakata, Kazuhiro ^{[1
]}

Kimura, Hisamichi ^{[2
]}

Inoue, Akihisa

机构：

[1] Osaka Univ, Joining & Welding Res Inst, Ibaraki 5670876, Japan

[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

JOURNAL OF THE JAPAN INSTITUTE OF METALS | 2010年 / 74卷 / 02期

关键词：

metallic glass; composite; tungsten; plastic deformation; thermal expansion coefficient; MECHANICAL-PROPERTIES; MATRIX COMPOSITES; PARTICLES; BEHAVIOR;

D O I：

10.2320/jinstmet.74.85

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

In order to improve the mechanical properties of Zr55Al10Ni5Cu30 metallic glass, tungsten-reinforced Zr55Al10Ni5Cu30 was developed. Tungsten particles with a diameter phi = 100 mu m were uniformly distributed into the matrix, exhibiting good wettability with the Zr55Al10Ni5Cu30 metallic glass matrix. Due to the extremely high melting temperature of tungsten, the tungsten particles coexisted with amorphous Zr55Al10Ni5Cu30, although a reaction layer of ZrW2 and a crystallized matrix formed to a certain extent depending on the sample. Nevertheless, the total amount of crystallization in both the matrix and the reaction phases remained small. As the volume fraction of W was increased front 0 to 8.7%, the compressive plastic strain increased from 0 to 1.3%, and the compressive fracture strength increased front 1480 MPa to 1870 MPa. The coefficient of thermal expansion of monolithic Zr55Al10N15Cu30 decreased from 10.4 x 10(-6)/K to 8.2 x 10(-6)/ K in the case of the composite containing 30% W powder.

引用

页码：85 / 88

页数：4

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