NDLI: Influence of deformation on the structure and mechanical and corrosion properties of high-nitrogen austenitic 07Kh16AG13M3 steel

Content Provider	Springer Nature Link
Author	Berezovskaya, V. V. Khadyev, M. S. Merkushkin, E. A. Sokolovskaya, Yu. A.
Copyright Year	2013
Abstract	The correlation has been studied between the structure of a high-nitrogen austenitic Cr-Mn-N steel formed in the process of combined hardening treatment, including cold plastic deformation (CPD), and its mechanical and corrosion properties. The structure and properties of commercial high-nitrogen (0.8% N) 07Kh16AG13M3 steel is analyzed after rolling by CPD and aging at 500 and 800°C. It is shown that CPD of the steel occurs by dislocation slip and deformation twinning. Deformation twinning and also high resistance of austenite to martensitic transformations at true strains of 0.2 and 0.4 determine the high plasticity of the steel. The contribution of the structure imperfection parameters to the broadening of the austenite lines during CPD is estimated by X-ray diffraction. The main hardening factor is stated to be lattice microdistortions. Transmission electron microscopy study shows that heating of the deformed steel to 500°C leads to the formation of the intermediate CrN phase by a homogeneous mechanism, and the intermtallic χ phase forms along the austenite grain boundaries in the case of heating at 800°C. After hardening by all investigated technological schemes, exception for aging at 800°C, the steel does not undergo pitting corrosion and is slightly prone to a stress corrosion cracking during static bending tests, while aging at 800°C causes pitting corrosion at a pitting formation potential E $_{pf}$ = −0.25 V.
Starting Page	855
Ending Page	862
Page Count	8
File Format	PDF
ISSN	00360295
Journal	Russian Metallurgy (Metally)
Volume Number	2013
Issue Number	11
e-ISSN	15556255
Language	English
Publisher	Pleiades Publishing
Publisher Date	2014-03-06
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys

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