NDLI: Effect of Dynamic Change in Strain Rate on Mechanical and Stress Corrosion Cracking Behavior of a Mild Steel

Content Provider	Springer Nature Link
Author	Krishnan, Govinda Varshney, A. Parameswaran, Venkitanarayanan Mondal, K.
Copyright Year	2017
Abstract	The current work analyzes the effect of the dynamic change in strain rate during tensile loading of a mild steel on its mechanical and stress corrosion behavior in 3.5 wt.% NaCl solution. The sample experiences high strain rate (10$^{−2}$ s$^{−1}$) up to 10, 15 and 20% of total deformation and then very low strain rate of 10$^{−6}$ s$^{−1}$ till fracture without any unloading in between. The behavioral characteristics of the steel under these circumstances are found to be different from that exhibited during complete loading till fracture both at high and slow strain rates separately. Total strain increases with the increase in the strain at which change in strain rate happens, and this is attributed to the generation of large number of dislocations at higher strain rate and subsequently release of dislocation at low strain rate during change over due to more time available for dynamic recovery. This observation is common for both in air and corrosive environment. One unique observation in this study is the higher total strain and lower strength observed during dynamic change in strain rate in the corrosive environment compared to that in air, which is attributed to the hydrogen-induced plasticity mechanism.
Starting Page	2619
Ending Page	2631
Page Count	13
File Format	PDF
ISSN	10599495
Journal	Journal of Materials Engineering and Performance
Volume Number	26
Issue Number	6
e-ISSN	15441024
Language	English
Publisher	Springer US
Publisher Date	2017-05-15
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	corrosion steel strain rate stress corrosion cracking Characterization and Evaluation of Materials Tribology, Corrosion and Coatings Quality Control, Reliability, Safety and Risk Engineering Design
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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