Effect of Preliminary Deformation on the Low-Cyclic Fatigue Characteristics, Phase Composition, and Residual Stresses of VNS9-Sh TRIP Steel

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发表日期：

2024年5月1日

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E. I. Lukin,
A. A. Ashmarin,
G. S. Seval’nev,
S. Ya. Betsofen,
I. O. Bannykh,
E. V. Blinov,
P. V. Ryzhkov,
D. V. Chernenok

摘要

Abstract

The influence of preliminary plastic tensile deformation (ε_pd = 9.5–26%) on the low-cyclic fatigue (LCF), phase composition, and residual stresses of 0.3- and 0.8-mm thick VNS9-Sh TRIP steel ribbons is determined. The LCF resistances of the ribbons of both thicknesses are shown to decrease as ε_pd increases. Cyclic loading is found to lead to the formation of tensile stresses in martensite, unlike static tension inducing compressive stresses in martensite.