Laser Annealing on the Surface Treatment of Thin Super Elastic NiTi Wire

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F18%3A00330365" target="_blank" >RIV/68407700:21220/18:00330365 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/18:00501904

Result on the web

<a href="https://doi.org/10.1088/1757-899X/362/1/012007" target="_blank" >https://doi.org/10.1088/1757-899X/362/1/012007</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/362/1/012007" target="_blank" >10.1088/1757-899X/362/1/012007</a>

Result language

angličtina

Original language name

Laser Annealing on the Surface Treatment of Thin Super Elastic NiTi Wire

Original language description

Here the aim of this research is annealing the surface of NiTi wire for shape memory alloy, super-elastic wire by solid state laser beam. The laser surface treatment was carried out on the NiTi wire locally with fast, selective, surface heat treatment that enables precisely tune the localized material properties without any precipitation. Both as drawn (hard) and straight annealing NiTi wire were considered for laser annealing with input power 3 W, with precisely focusing the laser beam height 14.3 % of the Z-axis with a spot size of 1 mm. However, straight annealing wire is more interest due to its low temperature shape setting behavior and used by companies for stent materials. The variable parameter such as speed of the laser scanning and tensile stress on the NiTi wire were optimized to observe the effect of laser response on the sample. Superelastic, straight annealed NiTi wires (d: 0.10 mm) were held prestrained at the end of the superelastic plateau (epsilon: 5 similar to 6.5 %) above the superelastic region by a tensile machine (Mitter: miniature testing rig) at room temperature (RT). Simultaneously, the hardness of the wires along the cross-section was performed by nano-indentation (NI) method. The hardness of the NiTi wire corresponds to phase changes were correlated with NI test. The laser induced NiTi wire shows better fatigue performance with improved 6500 cycles.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

IOP Conference Series: Materials Science and Engineering

ISBN

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ISSN

1757-8981

e-ISSN

—

Number of pages

7

Pages from-to

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Publisher name

IOP Publishing

Place of publication

London

Event location

Bukurešť

Event date

Mar 7, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000447159700007