Influence of Mechanical Deformation on the Corrosion Behavior of AISI 304 Stainless Steel Obtained from Cooking Utensils

CORROSION ◽  
2001 ◽  
Vol 57 (6) ◽  
pp. 557-565 ◽  
Author(s):  
V. A. C. Haanappel ◽  
M. F. Stroosnijder
Keyword(s):  
Stainless Steel ◽  
Current Density ◽  
Corrosion Current Density ◽  
Water Solution ◽  
Cold Work ◽  
Corrosion Current ◽  
304 Stainless Steel ◽  
Cyclic Polarization ◽  
Aisi 304 ◽  
Polarization Measurements

Abstract The corrosion properties of an AISI 304 (UNS S30400) stainless steel food-service utensil were investigated by linear polarization, Tafel plots, and cyclic polarization, performed in a sodium chloride (NaCl)/water solution at 20°C. Different surface area zones of the utensil were distinguished by differences in the amount of residual stress incorporated as a result of cold work. Large differences in corrosion current density and pit formation after cyclic polarization measurements, and as a consequence, in corrosion rates were found between zones with different degrees of deformation. In general, an increasing degree of deformation resulted in a decrease in the corrosion current density, whereas after cyclic polarization the number of pits increased. However, crevice corrosion was always observed after cyclic polarization measurements.

scholarly journals Corrosion Behavior of Diffusion Bonding Joints of (OFHC) Copper with Stainless Steel 304L in 3.5% NaCl

2018 ◽  
Vol 21 (1) ◽  
pp. 74
Author(s):  
Sami Abualnoun Ajeel ◽  
Ahmed Ali Akbar Akbar ◽  
Safaa Mohammed Hassoni
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Corrosion Behavior ◽  
Current Density ◽  
Diffusion Bonding ◽  
Corrosion Current Density ◽  
Pure Copper ◽  
Corrosion Current ◽  
Stainless Steel 304L ◽  
Materials Used

The present work deals with direct diffusion bonding welding without interlayer of austenitic stainless steel type AISI 304L with Oxygen Free High Conductivity pure copper (OFHC) in vacuum atmosphere (1.5 *10-5 mbr.). The optimum bonding conditions are temperature of 650 ◦C, duration time of 45 min. and the applied stress of 30 MPa, in order to secure a tight contact between the mating surfaces. The corrosion behavior of diffusion bonding joints in 3.5% Nacl is studied to evaluate the corrosion resistance of welding joints by using Potentiodynamic method. The observed microstructure of corroded specimen of optimum diffusion bonding joint shows that the corrosion current density has low value as compared with base materials used. During polarization, galvanic coupling is observed between two materials used. At passivity region, inverse polarity is occurred at 450mV. Therefore, passive stainless steel 304 L behaves as cathode respective to pure copper, the corrosion behavior of the diffusion bonding joint was mostly by copper side. The corrosion results indicate the presence of galvanic effect. The corrosion current density of copper, stainless steel 304L and bond joints condition were (3.66 µA/cm2, 1.62 µA/cm2 and 1.85µA/cm2) respectively. A SEM examination of corroded diffusion bonding joint indicates that the galvanic corrosion happened on copper side. The corrosion rate of bonding joint conditions was 0.85 mpy, which is less than 1%. This means that corrosion resistance of bond joint is more than excellent.

Pitting Corrosion in AISI 304 Rolled Stainless Steel Welding at Different Deformation Levels

2019 ◽  
Vol 9 (16) ◽  
pp. 3265 ◽  
Author(s):  
Francisco-Javier Cárcel-Carrasco ◽  
Manuel Pascual-Guillamón ◽  
Lorenzo Solano García ◽  
Fidel Salas Vicente ◽  
Miguel-Angel Pérez-Puig
Keyword(s):  
Stainless Steel ◽  
Pitting Corrosion ◽  
Cold Work ◽  
Weld Zone ◽  
Experimental Tests ◽  
Steel Plates ◽  
304 Stainless Steel ◽  
Chemical Transformations ◽  
Aisi 304 ◽  
Corrosion Tests

This paper analyzes pitting corrosion at the weld zone and at the heat affected zone (HAZ) in AISI 304 rolled stainless steel welds. As the aforementioned material is one of the most frequently used types of stainless steel, it is needful to be aware of the mechanisms that lead to its deterioration, like corrosion, since it can cause failures or malfunction in a wide variety of products and facilities. For the experimental tests 1.5 mm thick AISI 304 stainless steel plates were welded and rolled to different thicknesses and after, the samples were subjected to mechanical and corrosion tests and to a micrograph study. Deformation stresses and other intrinsic metallurgic and physic-chemical transformations that occur during cold rolling and welding, and that are key factors in the anti-corrosion behavior of AISI 304 rolled stainless steel, have been observed and analyzed. A correlation has been found between cold work levels in test samples and number of pits after corrosion tests.

Comparison of Recovery and Recrystallization in Stainless Steel Following Plane-Wave Shock Loading and Explosive Forming

1970 ◽  
Vol 28 ◽  
pp. 428-429 ◽  
Author(s):  
J. A. Korbonski ◽  
L. E. Murr
Keyword(s):  
Stainless Steel ◽  
Shock Loading ◽  
Pressure Pulse ◽  
Shock Pressure ◽  
304 Stainless Steel ◽  
Strain Rates ◽  
Two Dimensional ◽  
Aisi 304 Stainless Steel ◽  
Aisi 304 ◽  
Explosive Forming

Comparison of recovery rates in materials deformed by a unidimensional and two dimensional strains at strain rates in excess of 104 sec.−1 was performed on AISI 304 Stainless Steel. A number of unidirectionally strained foil samples were deformed by shock waves at graduated pressure levels as described by Murr and Grace. The two dimensionally strained foil samples were obtained from radially expanded cylinders by a constant shock pressure pulse and graduated strain as described by Foitz, et al.

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