scholarly journals Tafel-analysis of the AP-CITROX decontamination technology of Inconel alloy 690

2021 ◽  
pp. 110073
Author(s):  
R. Katona ◽  
A. Rivonkar ◽  
R. Locskai ◽  
G. Bátor ◽  
A. Abdelouas ◽  
...  
Keyword(s):  
Inconel Alloy ◽  
Alloy 690

INCONEL FILLER METAL 52

Alloy Digest ◽  
1992 ◽  
Vol 41 (9) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Arc Welding ◽  
Filler Metal ◽  
Pressurized Water Reactors ◽  
Pressurized Water ◽  
High Chromium ◽  
Inconel Alloy ◽  
Gas Tungsten Arc ◽  
Alloy 690 ◽  
Water Reactors

Abstract INCONEL FILLER METAL 52 is a high chromium filler metal for gas-metal-arc and gas-tungsten-arc welding of Inconel Alloy 690 (See Alloy Digest Ni-266, March 1981). Higher chromium is beneficial in resisting stress-corrosion cracking in high purity water for pressurized water reactors and for resistance to oxidizing acids. This datasheet provides information on composition and tensile properties. It also includes information on corrosion resistance as well as joining. Filing Code: Ni-412. Producer or source: Inco Alloys International Inc..

INCONEL WELDING ELECTRODE 152

Alloy Digest ◽  
1992 ◽  
Vol 41 (7) ◽  
Keyword(s):  
Arc Welding ◽  
Pressurized Water Reactors ◽  
Shielded Metal Arc Welding ◽  
Pressurized Water ◽  
High Chromium ◽  
Inconel Alloy ◽  
Metal Arc Welding ◽  
Alloy 690 ◽  
Water Reactors ◽  
Welding Electrode

Abstract INCONEL WELDING ELECTRODE 152 is a high chromium rod for shielded-metal-arc welding of Inconel Alloy 690 (Alloy Digest Ni-266, March 1981). Higher chromium is beneficial in resisting stress-corrosion cracking in high purity water for pressurized water reactors and for resistance to oxidizing acids. This datasheet provides information on composition and tensile properties. It also includes information on corrosion resistance as well as joining. Filing Code: Ni-406. Producer or source: Inco Alloys International Inc..

scholarly journals Inconel Alloy 690-A New Corrosion Resistant Material

1979 ◽  
Vol 28 (2) ◽  
pp. 82-95 ◽  
Author(s):  
A. J. Sedriks ◽  
J. W. Schultz ◽  
M. A. Cordovi
Keyword(s):  
Resistant Material ◽  
Corrosion Resistant ◽  
Inconel Alloy ◽  
Alloy 690

Carbide Precipitation and SCC Behavior of Inconel Alloy 690

CORROSION ◽  
1988 ◽  
Vol 44 (5) ◽  
pp. 288-289 ◽  
Author(s):  
J. M. Sarver ◽  
J. R. Crum ◽  
W. L. Mankins
Keyword(s):  
Carbide Precipitation ◽  
Inconel Alloy ◽  
Alloy 690

Interpretation of Carbide Precipitation and Chromium Concentration Distribution of Alloy 690

2013 ◽  
Vol 372 ◽  
pp. 84-87 ◽  
Author(s):  
Kwang Soon Jang ◽  
Da Som Park ◽  
Yong Jae Yu ◽  
Jeong Min Kim ◽  
Hyun Seong Noh ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Chromium Carbide ◽  
Concentration Distribution ◽  
Chromium Concentration ◽  
Nucleation Theory ◽  
Classical Nucleation Theory ◽  
Avrami Equation ◽  
Hydrogen Brittleness ◽  
Inconel Alloy ◽  
Alloy 690

Inconel alloy 690 which contains high chromium concentration, has replaced Inconel alloy 600 because of its high resistance of stress corrosion cracking (SCC). Inconel alloy 690 is an austenite nickel-based alloy and it has intergranular chromium carbide (M23C6). Alloy should be maintained to be nearly free from fretting wear, corrosion, and hydrogen brittleness for a several decades. Main factors controlling deterioration are initial chromium carbide size and their distribution along austenite grain boundary and chromium concentration distribution inside of grain. The precipitated carbide along grain boundary are modeled by KJMA(Kolmogorov-Johnson-Mehl-Avrami) equation. The model is based on the classical nucleation theory, and Cr diffusion controlled growth followed by coarsening. The distribution of the chromium concentration near grain boundary with time is based on diffusion of chromium. The simulated results are compared with the experiments from literatures to confirm the validity of model.

Oxidation Products in Inconel Alloys 600 and 690 Under Hydrogenated Steam Environments and Their Role in Stress Corrosion Cracking

2010 ◽  
Vol 1276 ◽  
Author(s):  
Hugo F. Lopez
Keyword(s):  
Crack Initiation ◽  
Oxidation Products ◽  
Alloy 600 ◽  
Initiation Mechanism ◽  
Water Steam ◽  
Inconel Alloy ◽  
Inconel Alloys ◽  
Alloy 690 ◽  
Gel Film ◽  
The Stability

AbstractThermodynamic considerations for the stability of Ni and Cr compounds developed under PWR environments (PH2O and PH2) are experimentally tested. In particular, the experimental outcome indicates that Ni(OH)2 and CrOOH are thermodynamically stable products under actual PWR conditions (T < 360°C and Pressures of up to 20 MPa). Accordingly, a mechanism is proposed to explain crack initiation and growth in inconel alloy 600 along the gbs. The mechanism is based on the existing thermodynamic potential for the transformation of a protective NiO surface layer into an amorphous non-protective Ni(OH)2 gel. This gel is also expected to form along the gbs by exposing the gb Ni-rich regions to H2 supersaturated water steam. Crack initiation is then favored by tensile stressing of the gb regions which can easily rupture the brittle gel film. Repeating the sequence of reactions as fresh Ni is exposed to the environment is expected to also account for crack growth in Inconel alloy 600. The proposed crack initiation mechanism is not expected to occur in alloy 690 where a protective Cr2O3 film covers the metal surface. Yet, if a pre-existing crack is present in alloy 690, crack propagation would occur in the same manner as in alloy 600.

Microstructural effects on the hydrogen permeation of an Inconel alloy 690

2008 ◽  
Vol 50 (12) ◽  
pp. 3371-3377 ◽  
Author(s):  
J.M. Zagal ◽  
H.F. López ◽  
O. Flores ◽  
J.L. Albarran ◽  
L. Martínez
Keyword(s):  
Hydrogen Permeation ◽  
Inconel Alloy ◽  
Alloy 690 ◽  
Microstructural Effects

The Corrosion Resistance of Inconel Alloy 600 in High Temperature Phosphate Solutions

CORROSION ◽  
1977 ◽  
Vol 33 (4) ◽  
pp. 130-144 ◽  
Author(s):  
N. PESSALL ◽  
A. B. DUNLAP ◽  
D. W. FELDMAN
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Sodium Phosphate ◽  
Spectroscopic Studies ◽  
Alloy 600 ◽  
Inconel Alloy ◽  
Raman Spectroscopic ◽  
Alloy 800 ◽  
Alloy 690 ◽  
Phosphate Solutions

Abstract A test program is described in which the corrosion resistance of Inconel Alloy 600 and other alloys is evaluated in sodium phosphate solutions at temperatures between 275 and 325 C. For Inconel Alloy 600, a significant increase in corrosion resistance is associated with the increase in phosphate solubility which occurs when the Na/P ratio (r) is reduced from 3.0 to below 2.0. In solutions characterized by 2 &gt; r &gt; 1.35, the corrosion resistance of Inconel Alloy 600 exhibits a minimum value. Inconel Alloy 690 and Incoloy Alloy 800 exhibit similar corrosion behavior. Raman spectroscopic studies of sodium phosphate solutions indicate a conversion at 200 C of Na3PO4 → Na2HPO4, while both Na2HPO4 and NaH2PO4 are stable up to 320 C. The Raman spectra provide the basis for a good correlation between the corrosion resistance of Inconel Alloy 600 and the concentration of HPO4= or H2PO4− species in the high temperature phosphate environments.

INCONEL ALLOY 690

Alloy Digest ◽  
1981 ◽  
Vol 30 (3) ◽  
Keyword(s):  
High Temperature ◽  
Base Alloy ◽  
Aqueous Media ◽  
High Strength ◽  
Heat Treating ◽  
Inconel Alloy ◽  
Alloy 690 ◽  
Resistance To Stress ◽  
Nickel Base ◽  
Temperature Water

Abstract INCONEL Alloy 690 is a wrought nickel-base alloy with excellent resistance to many corrosive aqueous media and high-temperature atmospheres. It also has high strength, good metallurgical stability, and favorable fabrication characteristics. It has excellent resistance to stress-corrosion cracking in chloride-containing solutions and to sodium hydroxide solutions. INCONEL Alloy 690 is useful for various applications involving nitric or nitric/hydrofluoric acid solutions, sulfur-containing gases and various types of high-temperature water such as in nuclear generators. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ni-266. Producer or source: Huntington Alloy Products Division, An INCO Company.

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