Estimation of the notch sensitivity of a nitrided steel by acoustic emission
- Authors: Rogachev S.O.1, Nikulin S.A.1, Khatkevich V.M.1, Ozherelkov D.Y.1, Molyarov A.V.1
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Affiliations:
- National University of Science and Technology MISiS
- Issue: Vol 2017, No 10 (2017)
- Pages: 862-866
- Section: Applied Problems of Strength and Plasticity
- URL: https://journals.rcsi.science/0036-0295/article/view/171775
- DOI: https://doi.org/10.1134/S0036029517100184
- ID: 171775
Cite item
Abstract
The notch sensitivity of sheet corrosion-resistant 08Kh17T steel is estimated in the states before and after high-temperature (1000–1100°C) internal nitriding during tensile tests accompanied by the measurement of acoustic emission signals. A crack in the steel is shown to propagate according to a ductile mechanism is all states. As the nitrogen content increases from 0.60 to 0.85%, the ultimate tensile strength of the steel decreases by 15% in the presence of a stress concentrator and remains substantially higher than the yield strength of the sheet steel without a stress concentrator.
About the authors
S. O. Rogachev
National University of Science and Technology MISiS
Author for correspondence.
Email: csaap@mail.ru
Russian Federation, Leninskii pr. 4, Moscow, 119049
S. A. Nikulin
National University of Science and Technology MISiS
Email: csaap@mail.ru
Russian Federation, Leninskii pr. 4, Moscow, 119049
V. M. Khatkevich
National University of Science and Technology MISiS
Email: csaap@mail.ru
Russian Federation, Leninskii pr. 4, Moscow, 119049
D. Yu. Ozherelkov
National University of Science and Technology MISiS
Email: csaap@mail.ru
Russian Federation, Leninskii pr. 4, Moscow, 119049
A. V. Molyarov
National University of Science and Technology MISiS
Email: csaap@mail.ru
Russian Federation, Leninskii pr. 4, Moscow, 119049