Effect of carbon content and drawing strain on the fatigue behavior of tire cord filaments
Küçük Resim Yok
Tarih
2018
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier - Division Reed Elsevier India Pvt Ltd
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
In this work we aim to investigate fatigue strengths of the steel filaments in diameter of 0.25 mm with three different Carbon (0.70%C, 0.80%C and 0.90%C) and with four different drawing strains (3.25, 3.37, 3.71 and 3.76) by the pure bending test method. All fatigue tests have been carried out at room temperature and at a frequency of 10 Hz via a custom manufactured pure bending testing machine of which the fully reserved strain value, R = epsilon(min)/epsilon(max), is -1. The applied value of cyclic deformation, epsilon, has been chosen from the range 0.20%-1.07% as bending strain. The plots of S-N (Strain-Cycle) curves are based on high cycle fatigue (HCF) life is greater than or equal to 10(4) cycles. The fatigue deformation limit values have been determined as 0.55% units and 0.20% units for the steels of the 0.25NT-70C and 0.25UT-90C quality, respectively. The increase in hardness resulting from the microstructural thinning (due to drawing strain) increases the fatigue deformation limit of the steels containing 0.80%C. Despite the increase in the drawing strain, carbon content and hardness, the fatigue deformation limit decreased with increasing inclusion content. Fractured surfaces of the samples, which have been broken at both high fatigue life and fatigue deformation limit values, are inspected via SEM. The SEM inspection has demonstrated that the fatigue fracturing of the steel filaments are similar to that of baseball bat cracking. (C) 2018 Karabuk University. Publishing services by Elsevier B.V.
Açıklama
Anahtar Kelimeler
Steel tire cord, Carbon content, Pure bending fatigue, Fracture surfaces
Kaynak
Engineering Science and Technology-An International Journal-Jestech
WoS Q Değeri
N/A
Scopus Q Değeri
Q1
Cilt
21
Sayı
3
