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    Volume 6, Issue 4 (August 2017)

    Special Issue Paper

    Effect of Nitriding on Fatigue of Thermohydrogen Treated Ti-6Al-4V Alloy

    (Received 31 May 2016; accepted 22 November 2016)

    Published Online: 29 August 2017

    CODEN: MPCACD

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    Abstract

    The comparative study of the influence of different types of nitriding (ion nitriding and gas nitriding) on the fatigue strength, during the rotating bending fatigue tests of the samples of Ti-6Al-4V alloy, after refinement of grain structure by thermohydrogen treatment was carried out. It was shown that increasing the fatigue strength to σ−1 = 590 MPa, obtained by refinement of grain structure of the samples, decreased after nitriding, remaining at σ−1 = 520 MPa for ion nitriding and σ−1 = 410 MPa for gas nitriding. The reasons of such a decrease were considered.

    Author Information:

    Pohrelyuk, I. M.
    High Temperature Strength of Structural Materials in Gas and Liquid Metal Media Dept., Karpenko Physico-Mechanical Inst. of National Academy of Sciences of Ukraine, Lviv

    Fedirko, V. M.
    High Temperature Strength of Structural Materials in Gas and Liquid Metal Media Dept., Karpenko Physico-Mechanical Inst. of National Academy of Sciences of Ukraine, Lviv

    Skvortsova, S. V.
    MATI—Russian State Technological Univ. named after K.E. Tsiolkovsky, Moscow

    Luk’yanenko, A. G.
    High Temperature Strength of Structural Materials in Gas and Liquid Metal Media Dept., Karpenko Physico-Mechanical Inst. of National Academy of Sciences of Ukraine, Lviv

    Tkachuk, O. V.
    High Temperature Strength of Structural Materials in Gas and Liquid Metal Media Dept., Karpenko Physico-Mechanical Inst. of National Academy of Sciences of Ukraine, Lviv


    Stock #: MPC20160073

    ISSN:2379-1365

    DOI: 10.1520/MPC20160073

    Author
    Title Effect of Nitriding on Fatigue of Thermohydrogen Treated Ti-6Al-4V Alloy
    Symposium ,
    Committee B10