Journal of Production Engineering

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Vol. 3 No. 3 (1986): Former "Proceedings of the Institute of Production Engineering"
Original Research Article

Fatigue crack initiation and growth of tool steel Č.4751

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  • Katarina Gerić,
  • Leposava Šiđanin
Katarina Gerić
University of Novi Sad, Faculty of Technical Sciences, Departman for Production Engineering, Trg Dositeja Obradovica 6, 21000 Novi Sad, Serbia
DOI: https://doi.org/10.24867/JPE-1986-03-049

Published 1986-09-01

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How to Cite

Gerić, K., & Šiđanin, L. (1986). Fatigue crack initiation and growth of tool steel Č.4751. Journal of Production Engineering, 3(3), 49–59. https://doi.org/10.24867/JPE-1986-03-049

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Abstract

The conditions for fatigue crack initiation and propagation in double and triple tempered tool steel .4751 have been investigated. Fatigue crack initiation was analyzed as a function of the ΔK parameter. It was observed that the minimum value of (ΔK/Δσ)th decreased from 620 to 499 MPa with an increasing notch tip radius from 0.4 to 1.5 mm for double-tempered steel and from 620 to 537 MPa for triple-tempered steel, respectively. The fatigue crack growth rate, as a function of stress intensity range for both tempered conditions, was found to follow a relationship as predicted by Paris.

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FULL TEXT ARTICLE (PDF)