Vacuum hot pressing of gas-atomized Ni-Zr-Ti-Si-Sn amorphous powder

被引：20

作者：

Kim, YB

Park, HM

Jeung, WY

Bae, JS

机构：

[1] Korea Inst Sci & Technol, Met Proc Res Ctr, Seoul 136791, South Korea

[2] Korea Univ, Dept Adv Mat Engn, Seoul 136701, South Korea

[3] Korea Inst Machinary & Mat, Dept Mat Technol, Chang Won 641830, South Korea

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2004年 / 368卷 / 1-2期

关键词：

amorphous powder; gas-atomization; consolidation; bulk amorphous alloy;

D O I：

10.1016/j.msea.2003.11.015

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Fully amorphous Ni57Zr20Ti18Si3Sn2 powders without any crystallinity are successfully fabricated in the particle size range below 75 mum by gas-atomization method. Gas-atomized Ni57Zr20Ti18Si3Sn2 amorphous powder exhibits the glass transition temperature (T-g) of 828 K and the crystallization temperature (T-x) of 886 K. The gas-atomized Ni57Zr20Ti18Si3Sn2 amorphous powder posesses a supercooled liquid region (DeltaTX) of 58 K. Based on the determined consolidation condition, the gas-atomized Ni57Zr20Ti18Si3Sn2 amorphous powder was consolidated by a vacuum hot pressing apparatus. The optimum consolidation conditions were determined by isothermal annealing of Ni57Zr20Ti18Si3Sn2 amorphous powder. The consolidated bulk Ni57Zr20Ti18Si3Sn2 samples show completely amorphous on processing after consolidation. The relative density and hardness of the consolidated bulk Ni57Zr20Ti18Si3Sn2 compacts are greater than 99 % and 800 Hv, respectively. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：318 / 322

页数：5

共 14 条

[1]

AKASUKA R, 1999, T JIM, V40, P258

[2]

BOUDARD M, 1991, J MATER SCI, V26, P6517, DOI 10.1007/BF02387839

[3]

BUDROV S, 1991, MAT SCI ENG A-STRUCT, V133, P455

[4] PREPARATION OF BULKY AMORPHOUS ZR-AL-CO-NI-CU ALLOYS BY COPPER MOLD CASTING AND THEIR THERMAL AND MECHANICAL-PROPERTIES [J].