Melt-cast microfibers of Cu-based shape memory alloy adopt a favorable texture for superelasticity

Nihan Tuncer, Christopher A. Schuh*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Continuous production of shape memory alloy (SMA) fibers and microfibers is a non-trivial task due to the challenges associated with their undeformed memory and, for many copper-based SMAs, brittleness in non-engineered forms. Here we demonstrate the direct continuous casting of super-meter-scale Cu-based SMA microfibers into a desirable oligocrystalline microstructure that is not brittle. The melt-casting process used here develops a favorable texture as well, leading to large superelastic strains (above 8%), beyond what is typical for non-single-crystal SMAs.

Original languageEnglish (US)
Pages (from-to)46-50
Number of pages5
JournalScripta Materialia
Volume117
DOIs
StatePublished - May 2016

Funding

This work was supported by the U.S. Army Research Laboratory and the U.S. Army Research Office through the Institute for Soldier Nanotechnologies, under contract number W911NF-13-D-0001 .

Keywords

  • Fibers
  • Martensitic phase transformations
  • Shape memory alloys

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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