Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Room temperature corrosion behaviour of plastically deformed AISI 304 stainless steel by friction stir welding in neutral and acidified chloride solutions

Journal Article · · Corrosion Engineering, Science and Technology
Severe plastic deformation of 304L stainless steel plate was carried out by friction stirring under an isothermal tool temperature at 825°C. The friction stirred zone showed extensive grain refinement, high fraction of low angle grain boundaries due to dislocation rearrangement, Σ3 and Σ9 special grain boundaries and discrete Fe–Cr–Mn-rich particles. Electrochemical polarisation measurements were done on the base metal (BM) and friction stir welded (FSW) specimens in the neutral and acidified 3.5% NaCl solutions. The BM showed marginally better pitting resistance in the neutral chloride solution than the FSW because of a larger fraction of special grain boundaries, and larger grain size. Whereas in acidified 3.5% NaCl solution, the FSW showed better corrosion resistance than the BM. Furthermore, the surface film of the FSW had a lower impedance and a lower defect concentration than the BM indicating higher diffusivity of point defects in the FSW.
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
2446719
Report Number(s):
PNNL-SA--168590
Journal Information:
Corrosion Engineering, Science and Technology, Journal Name: Corrosion Engineering, Science and Technology Journal Issue: 7 Vol. 57; ISSN 1478-422X
Publisher:
Taylor & FrancisCopyright Statement
Country of Publication:
United States
Language:
English

References (34)

Fracture and the formation of sigma phase, M23C6, and austenite from delta-ferrite in an AlSl 304L stainless steel journal June 1994
Microstructures in Friction Stir Welded 304 Austenitic Stainless Steel journal March 2005
Interfacial Reaction during Friction Stir Welding of Al and Cu journal March 2011
Quantification of Microtexture at Weld Nugget of Friction Stir-Welded Carbon Steel journal March 2017
Application of Grain Boundary Engineering to Improve Intergranular Corrosion Resistance in a Fe–Cr–Mn–Mo–N High-Nitrogen and Nickel-Free Austenitic Stainless Steel journal January 2020
Pitting behavior of friction stir repair-welded 304L stainless steel in 3.5% NaCl solution at room temperature: role of grain and defect structures journal December 2020
Anodic behaviour of mild steel in strong sulphuric acid—I. Steady-state conditions journal January 1964
Flow patterns during friction stir welding journal September 2002
Optimization of grain boundary character distribution for intergranular corrosion resistant 304 stainless steel by twin-induced grain boundary engineering journal May 2002
Enhancing the properties of friction stir welded stainless steel joints via multi-criteria optimization journal September 2016
Recrystallization in type 304L stainless steel during friction stirring journal February 2005
Comparison of corrosion properties of passive films formed on phase reversion induced nano/ultrafine-grained 321 stainless steel journal September 2013
Improving the intergranular corrosion resistance of 304 stainless steel by grain boundary network control journal May 2011
Implications of the kosmotrope/chaotrope nature of the anions on the breakdown of passivity of iron by halides journal May 2014
Effect of grain size on pitting corrosion of 304L austenitic stainless steel journal May 2015
Improving intergranular corrosion resistance in a nickel-free and manganese-bearing high-nitrogen austenitic stainless steel through grain boundary character distribution optimization journal June 2016
Anomalous evolution of corrosion behaviour of warm-rolled type 304 austenitic stainless steel journal July 2019
Relationship between the microstructure and local corrosion properties of weld metal in austenitic stainless steels journal October 2020
Solid state crack repair by friction stir processing in 304L stainless steel journal January 2018
Banded structure and its distribution in friction stir processing of 316L austenitic stainless steel journal January 2012
Friction stir welding of maraging steel (Grade-250) journal August 2013
Microstructural evolution and mechanical properties of friction stir welded joint of Fe–Cr–Mn–Mo–N austenite stainless steel journal December 2014
Friction-stir welding of ultrafine grained austenitic 304L stainless steel produced by martensitic thermomechanical processing journal July 2015
In-situ grain structure and texture evolution during friction stir welding of austenite stainless steel journal February 2017
Recent Advances in Dissimilar Friction Stir Welding of Aluminum to Magnesium Alloys journal January 2020
Processing-microstructure-property correlations for temperature-controlled friction stir welding of 304L SS plates journal February 2021
Rapid formation of the sigma phase in 304 stainless steel during friction stir welding journal December 2003
Revealing the relationship between grain size and corrosion rate of metals journal December 2010
Effect of grain size on the corrosion resistance of low carbon steel journal January 2020
Interpretation of Cyclic Potentiodynamic Polarization Test Results for Study of Corrosion Behavior of Metals: A Review journal September 2018
Material flow and mixing patterns during dissimilar FSW journal November 2010
Microstructural characterisation of stir zone containing residual ferrite in friction stir welded 304 austenitic stainless steel journal September 2005
Update on Investigations of Viability of Cold Spray and FSW as a Spent Nuclear Fuel Dry Storage Canister Mitigation Tool report September 2019
Tool Wear and Reactions in 304 Stainless Steel during Friction Stir Welding journal February 2011