Formation of two-way shape memory effect in NiTi alloy using pulsed laser irradiation

Saidjafarzoda Ilhom; Khomidkhodzha Kholikov; Peizhen Li; Dovletgeldi Seyitliyev; Zachary Thomas; Duvall Roberts; Omer San; Haluk E. Karaca; Ali O. Er

doi:10.1117/12.2290276

19 February 2018 Formation of two-way shape memory effect in NiTi alloy using pulsed laser irradiation

Saidjafarzoda Ilhom, Khomidkhodzha Kholikov, Peizhen Li, Dovletgeldi Seyitliyev, Zachary Thomas, Duvall Roberts, Omer San, Haluk E. Karaca, Ali O. Er

Author Affiliations +

Proceedings Volume 10520, Laser-based Micro- and Nanoprocessing XII; 105200V (2018) https://doi.org/10.1117/12.2290276
Event: SPIE LASE, 2018, San Francisco, California, United States

Abstract

Shape memory alloys (SMAs) are a unique class of smart materials and they were employed in various applications in engineering, biomedical, and aerospace technologies. Here, we report an advanced, efficient, and low-cost direct imprinting method with low environmental impact to create thermally controllable surface patterns. Patterned microindents were generated on Ni₅₀Ti₅₀ (at. %) SMAs using an Nd:YAG laser with 1064 nm wavelength at 10 Hz. Laser pulses at selected fluences were focused on the NiTi surface and generated pressure pulses of up to a few GPa. Optical microscope images showed that surface patterns with tailorable sizes can be obtained. The depth of the patterns increases with laser power and irradiation time. Upon heating, the depth profile of SMA surfaces changed where the maximum depth recovery ratio of 30 % was observed. Recovery ratio decreased and saturated at about 15 % when the amount of time and thus the indent depth was increased. Laser-induced shock wave propagation inside the material was simulated and showed a good agreement with the experimental results. The stress wave closely followed the rise time of the laser pulse to its peak value and initial decay. Rapid attenuation and dispersion of the stress wave were observed.

Citation Download Citation

Saidjafarzoda Ilhom, Khomidkhodzha Kholikov, Peizhen Li, Dovletgeldi Seyitliyev, Zachary Thomas, Duvall Roberts, Omer San, Haluk E. Karaca, and Ali O. Er "Formation of two-way shape memory effect in NiTi alloy using pulsed laser irradiation", Proc. SPIE 10520, Laser-based Micro- and Nanoprocessing XII, 105200V (19 February 2018); https://doi.org/10.1117/12.2290276

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Shape memory alloys

Laser energy

Pulsed laser operation

Copper

Aerospace engineering

Laser irradiation

Plasma

Show All Keywords

Keywords/Phrases

Search In:

Publication Years