Effect of Reduction on the Phase Composition and the Mechanical Properties of a VNS9-Sh TRIP Steel Wire during Static and Cyclic Loading.

Autor: Prosvirnin, D. V., Seval'nev, G. S., Kaplan, M. A., Sevost'yanov, M. A., Baikin, A. S., Sergienko, K. V., Pivovarchik, S. V., Prutskov, M. E., Seval'neva, T. G., Kolmakov, A. G., Ul'yanov, E. I.
Zdroj: Russian Metallurgy (Metally); Oct2023, Vol. 2023 Issue 10, p1510-1515, 6p
Abstrakt: Abstract—The phase composition and the static and fatigue mechanical properties of austenitic–martensitic VNS9-Sh (23Kh15N5AM3-Sh) TRIP steel at studied at various stages of cold drawing, from a diameter of 2.4 mm to a diameter of 0.36 mm, which corresponds to an overall reduction (cumulative strain) of 31.5 and 86%, respectively. As the cumulative strain increases from 31.5 to 45%, the fraction of martensite in the material volume is found to increase from 15 to 20.4% at a comparable strength level (1800–1850 MPa), the yield strength increases, and the relative elongation decreases. At an identical phase composition (15–20.4% martensite in the volume and at most 14% at the surface) and a comparable tensile strength (1800–1850 MPa), the fatigue characteristics of a wire 0.95 mm in diameter are higher than those of a wire 2.4 mm in diameter. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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