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

The result's identifiers

  • 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>

Alternative languages

  • 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

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • OECD FORD branch

    20501 - Materials engineering

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2018

  • Confidentiality

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

Data specific for result type

  • Article name in the collection

    IOP Conference Series: Materials Science and Engineering

  • ISBN

  • ISSN

    1757-8981

  • e-ISSN

  • Number of pages

    7

  • Pages from-to

  • 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