US EPA

1755096 

Journal Article 

Development of W-Reinforced Zr-Based Metallic Glass 

Terajima, T; Nakata, K; Kimura, H; Inoue, A 

2010 

Yes 

Journal of the Japan Institute of Metals/Nippon Kinzoku Gakkaishi
ISSN: 0021-4876
EISSN: 1880-6880 

74 

2 

85-88 

WOS:000276524100004 

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. 

metallic glass; composite; tungsten; plastic deformation; thermal expansion coefficient