Magnetically enhanced shockwave-assisted three-dimensional imprinting and applications on NiTi shape memory alloys

S. Kylychbekov, A. Menon, S. Hakimov, G. Toker, K. Lemmen, H. Karaca, A. O. Er

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Shape Memory Alloys (SMA) have unique characteristics to memorize their original structure and retain them when activated by heat or stress, however, there still much to be done in terms of fatigue life and phase modifiability. In this project, we propose a tunable treatment method using shockwaves created by nanosecond and picosecond pulsed lasers assisted with magnetic field to create 3-D structures on NiTi SMA. When the laser pulse hits the surface, its energy is partially absorbed, which ablates the surface resulting a plasma plume. By confining the plasma using dielectric medium and magnetic field, the shockwave is tuned for vertical transfer of the pressure gradient on the surface. Optical profilometer and SEM results confirm that the shockwave pressure became uniform when magnetic field was used. The less heat affected zones on the crater, and equal depth across the crater indicates a stable surface morphology due to magnetic field. Moreover, Shape-memory properties were also investigated with differential scanning calorimetry (DSC) measurements of NiTi samples, and the results indicate significant phase broadening, reaching up to 33% from the initial, and shifts in austenitic and martensitic phases of 5 °C. The tunability of the shockwave using magnetic field and water confinement expands the usage in treatment and imprinting of SMAs for biomedical and industrial applications.

Original languageEnglish
Title of host publicationLaser-based Micro- and Nanoprocessing XVI
EditorsAkira Watanabe, Rainer Kling
ISBN (Electronic)9781510648494
DOIs
StatePublished - 2022
EventLaser-based Micro- and Nanoprocessing XVI 2022 - Virtual, Online
Duration: Feb 20 2022Feb 24 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11989
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceLaser-based Micro- and Nanoprocessing XVI 2022
CityVirtual, Online
Period2/20/222/24/22

Bibliographical note

Funding Information:
This project was funded by NSF EPSCoR RII Track-1 (OIA-1849213).

Publisher Copyright:
Copyright © 2022 SPIE.

Keywords

  • 3-D imprinting
  • Laser Shock Peening
  • Laser Shockwaves
  • Magnetic fields
  • Shape Memory Alloys

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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