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  • Influence of the martensite volume fraction on the reciprocating sliding behavior of Ti-Nb microalloyed steel
    Tuckart, Walter ...
    The objective of this work was to evaluate the influence of martensite fraction on the wear mode and the energy dissipation by friction of dual phase (DP) steel tested under reciprocating sliding ... conditions. For this purpose, a Ti-Nb microalloyed steel was heat treated in a conventional furnaceat temperatures between 780 and 880°C (intercritical annealing temperature) for 3 min to obtain DP microstructures with volume fractions of martensite between 25 and 90%. Wear tests were carried out in both DP and asreceived samples, using a reciprocating tribometer with ball-on-flat geometry, at two constant applied loads, 2.5 and 4 N. The wear damage of each sample was measured through volume loss and the dissipated energy during the test. The obtained results evidenced a significant influence of the contact load over the wear mode, because at low load the DP wear was reduced with increased hardness but just up to 75% of martensite. At high load, the sliding process promotes an oxide mixture in the ferritic microstructure that acts as a factor in wear reduction.
    Vir: Tribology transactions. - ISSN 1040-2004 (Vol. 57, no. 1, 2014, str. 146-155)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 2014
    Jezik - angleški
    COBISS.SI-ID - 1027754

    Povezava(-e):

    http://dx.doi.org/10.1080/10402004.2013.856981

vir: Tribology transactions. - ISSN 1040-2004 (Vol. 57, no. 1, 2014, str. 146-155)
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