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Title: Femtosecond laser-induced phase transformations in amorphous Cu{sub 77}Ni{sub 6}Sn{sub 10}P{sub 7} alloy

In this study, the femtosecond laser-induced crystallization of CuNiSnP amorphous ribbons was investigated by utilizing an amplified Ti:sapphire laser system. X-ray diffraction and scanning electronic microscope were applied to examine the phase and morphology changes of the amorphous ribbons. Micromachining without crystallization, surface patterning, and selective crystallization were successfully achieved by changing laser parameters. Obvious crystallization occurred under the condition that the laser fluence was smaller than the ablation threshold, indicating that the structural evolution of the material depends strongly on the laser parameters. Back cooling method was used to inhibit heat accumulation; a reversible transformation between the disordered amorphous and crystalline phases can be achieved by using this method.
Authors:
; ; ;  [1] ;  [1] ;  [2] ;  [3] ;  [1] ;  [4]
  1. Department of Mechanical Engineering, Tsinghua University, Beijing 100084 (China)
  2. (China)
  3. School of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China)
  4. (Canada)
Publication Date:
OSTI Identifier:
22412806
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; AMORPHOUS STATE; COPPER BASE ALLOYS; CRYSTALLIZATION; LASER RADIATION; MORPHOLOGY; NICKEL ALLOYS; PHOSPHORUS ADDITIONS; SAPPHIRE; SCANNING ELECTRON MICROSCOPY; SURFACES; TIN ALLOYS; X-RAY DIFFRACTION