ChemInform Abstract: GALVANIC CORROSION OF A BARE AND COATED AL ALLOYS COUPLED TO STAINLESS STEEL 304 OR TI-6AL-4V

1973 ◽  
Vol 4 (43) ◽  
pp. no-no
Author(s):  
F. MANSFELD ◽  
E. P. PARRY
Keyword(s):  
Stainless Steel ◽  
Galvanic Corrosion ◽  
Al Alloys ◽  
Stainless Steel 304

Laboratory Studies of Galvanic Corrosion I. Two-Metal Couples

CORROSION ◽  
1975 ◽  
Vol 31 (8) ◽  
pp. 298-302 ◽  
Author(s):  
F. MANSFELD ◽  
J. V. KENKEL
Keyword(s):  
Stainless Steel ◽  
Anode Materials ◽  
Galvanic Corrosion ◽  
Tap Water ◽  
Current Data ◽  
Al Alloys ◽  
Distilled Water ◽  
Galvanic Current ◽  
Accelerated Corrosion ◽  
Relative Susceptibility

Abstract Galvanic interaction of stainless steel 304L, Ni 270, Cu, Ti-6AI-4V, Sn, 4130 steel, Cd, and Zn has been studied in 3.5% NaCl using galvanic current and weight loss measurements in 24-hour tests. Galvanic couples of 4130 steel and one of the Al alloys 1100, 2024, 2213, 6061, and 7075 have also been evaluated in tap water and distilled water. Galvanic current data can be used to assess both the effect of different dissimilar cathode materials as well as the relative susceptibility to galvanic corrosion of anode materials. For 3.5% NaCl, it has been found that the effect of the cathode material decreases in the order Cu > Ni > stainless steel >Ti-6Al-4V, while the relative susceptibility of anode materials decreases in the order Sn > Zn > 4130 steel > Cd. An analysis of data in various electrolytes shows that coupling of 4130 steel to Al alloys leads to cathodic protection of the steel in 3.5% NaCl, but to accelerated corrosion in tap water and distilled water.

scholarly journals Análisis de la solidificación de aleaciones ZN-AL a partir del método de Newton

2019 ◽  
pp. 1-7
Author(s):  
Sara Cruz-Guerrero ◽  
Israel Lazaro-Becerril ◽  
Jorge Eduardo Munguia-Huerta ◽  
Antonio Juanico-Loran ◽  
Hector Cruz-Mejia
Keyword(s):  
Stainless Steel ◽  
Primary Phase ◽  
Al Alloys ◽  
Cooling Curves ◽  
Lamellar Eutectic ◽  
Type K ◽  
Electronic File ◽  
Stainless Steel 304 ◽  
Eutectic Morphology ◽  
A Minor

The undercoolings of the primary and eutectic phases were determined in three Zn-Al alloys by the experimental cooling curves associated. The compositions of the alloys considered in this study were Zn-3%wAl, Zn-6%w Al and Zn-11% w Al in order to determinate the influence of the primary phase in the morphology obtained by the euetecic microsconstituent at the end of the solidification and its relationship with the underccoling registered in each step. The experimental cooling curves were obtained by a thermocouple type K inserted laterally at the center of a metallic mould of stainless steel 304, which dimentions were 4 cm of diameter and 7.5 cm of lengh. This thermocouple was connected to a data adqusiitior system and a computer in order to register these data in an electronic file. These data were processed following the algorithm of NTA method. The results obtained showed that a minor undercoolig is associated with a lamellar eutectic morphology.

EXPLOSIVE CLADDING OF ALUMINIUM 5052-STAINLESS STEEL 304

2019 ◽  
Vol 14 (3) ◽  
Author(s):  
Saravanan S ◽  
Murugan G
Keyword(s):  
Stainless Steel ◽  
Interfacial Microstructure ◽  
Bend Angle ◽  
Flyer Plate ◽  
Layer Formation ◽  
Molten Layer ◽  
Explosive Cladding ◽  
Plate Velocity ◽  
Stainless Steel 304 ◽  
Loading Ratio

This study addresses the effect of process parameters viz., loading ratio (mass of explosive/mass of flyer plate) and preset angle on dynamic bend angle, collision velocity and flyer plate velocity in dissimilar explosive cladding. In addition, the variation in interfacial microstructure and mechanical strength of aluminium 5052-stainless steel 304 explosive clads is reported. The interface exhibits a characteristic undulating interface with a continuous molten layer formation. The interfacial amplitude increases with the loading ratio and preset angle. Maximum hardness is observed at regions closer to the interface

Galvanic Corrosion Study on Stainless Steel Cartridge Design

2008 ◽  
Author(s):  
Daniel P. Schmidt ◽  
Donald R. Skelton ◽  
Michelle E. Malham
Keyword(s):  
Stainless Steel ◽  
Galvanic Corrosion ◽  
Corrosion Study

Evaluation of the residual stress in stainless steel 304L hydraulically expanded joints

2020 ◽  
pp. 095440892096401
Author(s):  
Ying Hong ◽  
Xuesheng Wang ◽  
Yan Wang ◽  
Zhao Zhang ◽  
Yong Han
Keyword(s):  
Residual Stress ◽  
Stainless Steel ◽  
Yield Strength ◽  
Residual Stresses ◽  
Heat Exchangers ◽  
Nuclear Power ◽  
The Finite Element Method ◽  
Power Stations ◽  
Stainless Steel 304 ◽  
Initial Clearance

Stainless steel 304 L tubes are commonly used in the fabrication of heat exchangers for nuclear power stations. The stress corrosion cracking (SCC) of 304 L tubes in hydraulically expanded tube-to-tubesheet joints is the main reason for the failure of heat exchangers. In this study, 304 L hydraulically expanded joint specimens were prepared and the residual stresses of a tube were evaluated with both an experimental method and the finite element method (FEM). The residual stresses in the outer and inner surfaces of the tube were measured by strain gauges. The expanding and unloading processes of the tube-to-tubesheet joints were simulated by the FEM. Furthermore, an SCC test was carried out to verify the results of the experimental measurement and the FEM. There was good agreement between the FEM and the experimental results. The distribution of the residual stress of the tube in the expanded joint was revealed by the FEM. The effects of the expansion pressure, initial tube-to-hole clearance, and yield strength of the tube on the residual stress in the transition zone that lay between the expanded and unexpanded region of the tube were investigated. The results showed that the residual stress of the expanded joint reached the maximum value when the initial clearance was eliminated. The residual stress level decreased with the decrease of the initial tube-to-hole clearance and yield strength. Finally, an effective method that would reduce the residual stress without losing tightness was proposed.

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