Modulating the Pseudoelastic Response of Nitinol Using Ion Implantation

Journal Article · 31 March 2022 · Advanced Materials and Processes

OSTI ID:1865719

Hinojos, Alejandro ^[1]; Hong, Daniel ^[2]; Feng, Longsheng ^[2]; Gao, X. ^[2]; Wang, Yunzhi ^[2]; Mills, Michael J. ^[2]; Anderson, Peter M. ^[2]; Yang, Chao ^[3]; Wharry, Janelle P. ^[3]; Hattar, Khalid ^[4]; Li, Nan ^[5]; Schaffer, Jeremy E. ^[6]

---

1. The Ohio State Univ., Columbus, OH (United States); Purdue University
2. The Ohio State Univ., Columbus, OH (United States)
3. Purdue Univ., West Lafayette, IN (United States)
4. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
5. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
6. Fort Wayne Metals Research Products, LLC. Fort Wayne, IN (United States)

This work explores whether ion beam modification can be used to modulate the austenite to martensite phase transformation in Nickel-Titanium (NiTi), thereby achieving novel or localized transformation properties in near-surface regions. We report this could provide alternatives to laser shot peening or other surface treatment methods and possibly expand applications in biomedical, aerospace, and other fields. Irradiation induces defects and internal stress that can serve as nucleation and/or pinning sites for the phase transformation. Thus, it can augment more convention- al approaches, including alloying, severe mechanical work, grain size reduction, and precipitation of coherent precipitates. A range of outcomes is possible in principle, including a shift of the critical stress or temperature for onset of the transformation, linearization, reduction of hysteresis, stabilization, and extent of transformation strain.

• Research Organization: Purdue Univ., West Lafayette, IN (United States); The Ohio State Univ., Columbus, OH (United States); Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States). Center for Integrated Nanotechnologies (CINT); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; National Sciene Foundation (NSF); USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: SC0020150; SC0001258; NA0003525; 89233218CNA000001
• OSTI ID: 1865719
• Journal Information: Advanced Materials and Processes, Journal Name: Advanced Materials and Processes Journal Issue: 3 Vol. 180; ISSN 0882-7958
• Publisher: ASM InternationalCopyright Statement
• Country of Publication: United States
• Language: English