Kim, YB Park, HM 2024-01-21T05:08:12Z 2024-01-21T05:08:12Z 2021-09-03 2005-04-15 0921-5093 https://pubs.kist.re.kr/handle/201004/136548 An amorphous/crystalline composite was synthesized by warm extrusion of copper-deposited Ni57Zr20Ti18Si3Sn2, amorphous powder. Electroless plating method was applied to deposit crystalline copper on Ni57Zr20Ti18Si3Sn2 amorphous powder after fabricating Ni57Zr20Ti18Si3Sn2 amorphous powder by gas-atomization technique. Fully amorphous Ni57Zr20Ti18Si3Sn2, powder with a supercooled liquid region of 58 K could be obtained in the particle size range below 75 mu m. Uniform deposition of crystalline copper on the Ni57Zr20Ti18Si3Sn2 amorphous powders was successfully performed by electroless plating. The optimum processing conditions for extrusion were obtained from the time-temperature-transformation curve determined by isothermal annealing of Ni57Zr20Ti18Si3Sn2 amorphous powder. The extruded amorphous/crystalline composite shows plasticity after yielding and exhibits a strength level of 1.3 GPa and plastic stain of about 3% under compressive condition. While monolithic bulk Ni57Zr20Ti18Si3Sn2 amorphous alloy fabricated under same extrusion condition shows no plastic deformation. (c) 2005 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA ALLOYS NI COATINGS EXTRUSION Synthesis of amorphous/crystalline composite using electroless copper plated amorphous powder Article 10.1016/j.msea.2005.01.035 1 MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v.396, no.1-2, pp.166 - 171 MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 396 1-2 166 171 scie scopus 000228740500022 2-s2.0-15944385222 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Science & Technology - Other Topics Materials Science Metallurgy & Metallurgical Engineering Article ALLOYS NI COATINGS EXTRUSION amorphous powder composite electroless plating copper gas-atomization bulk amorphous alloy