Vacuum Arc Melting Processes for Biomedical Ni-Ti Shape Memory Alloy

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Vacuum Arc Melting Processes for Biomedical Ni-Ti Shape Memory Alloy

Authors
  • Tsai, De-Chang
  • Chiang, Chen-Hsueh
Type
Published Article
Journal
MATEC Web of Conferences
Publisher
EDP Sciences
Publication Date
Nov 04, 2015
Volume
30
Identifiers
DOI: 10.1051/matecconf/20153001004
Source
EDP Sciences
License
Green

Abstract

This study primarily involved using a vacuum arc remelting (VAR) process to prepare a nitinol shape-memory alloy with distinct ratios of alloy components (nitinol: 54.5 wt% to 57 wt%). An advantage of using the VAR process is the adoption of a water-cooled copper crucible, which effectively prevents crucible pollution and impurity infiltration. Optimising the melting production process enables control of the alloy component and facilitates a uniformly mixed compound during subsequent processing. This study involved purifying nickel and titanium and examining the characteristics of nitinol alloy after alloy melt, including its microstructure, mechanical properties, phase transition temperature, and chemical components.

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