scholarly journals Effect of Carbonitride Precipitates on the Corrosion Resistance of Low-Alloy Steels under Operating Conditions of Oil-Field Pipelines

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 766
Author(s):  
Irina Rodionova ◽  
Andrey Amezhnov ◽  
Ekaterina Alekseeva ◽  
Yuliya Gladchenkova ◽  
Irina Vasechkina
Keyword(s):  
Heat Treatment ◽  
Corrosion Resistance ◽  
Operating Conditions ◽  
Oil Field ◽  
Rolled Sheet ◽  
Low Alloy Steels ◽  
Alloy Steels ◽  
Sheet Products ◽  
Microalloying Elements ◽  
Hot Rolled

An investigation into the corrosion resistance of steels with various contents of carbon and microalloying elements was carried out. It was shown that the presence of a large amount of nanosized (2–3 nm and less) precipitates of the interphase type, particularly niobium carbonitride and vanadium carbonitride, leads to a decrease in the corrosion resistance of hot-rolled sheet products. It was found that, after heat treatment of rolled products at 710 °C, the corrosion resistance of the metal is improved. One of the reasons for this is a decrease in the amount of interphase precipitates, which negatively affect the corrosion resistance of steel, while particles formed in austenite and ferrite do not have such an effect. To ensure high corrosion resistance of steels for oil-field pipelines, microalloying with niobium instead of vanadium is advisable, as well as heat treatment at temperatures above 710 °C.

scholarly journals Effect of tempering heat treatment on the CO2 corrosion resistance of quench-hardened Cr-Mo low-alloy steels for oil and gas applications

2019 ◽  
Vol 154 ◽  
pp. 36-48 ◽  
Author(s):  
Clara. Escrivà-Cerdán ◽  
Steve W. Ooi ◽  
Gaurav R. Joshi ◽  
Roberto Morana ◽  
H.K.D.H. Bhadeshia ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Corrosion Resistance ◽  
Oil And Gas ◽  
Co2 Corrosion ◽  
Low Alloy Steels ◽  
Alloy Steels

BETHLEHEM HOT-ROLLED SHEET XF SERIES

Alloy Digest ◽  
1992 ◽  
Vol 41 (1) ◽  
Keyword(s):  
Tensile Properties ◽  
High Strength ◽  
Rolled Sheet ◽  
Low Alloy Steels ◽  
Bend Strength ◽  
Bethlehem Steel Corporation ◽  
Alloy Steels ◽  
Steel Corporation ◽  
Hot Rolled ◽  
Minimum Yield

Abstract BETHLEHEM HOT-ROLLED SHEET XF SERIES alloys B50XF, B60XF, B70XF and B80XF are high strength low alloy steels. The numbers in the alloy designations refer to minimum yield strengths. The steels are made using ladle desulfurization which virtually eliminates harmful stringer type inclusions. The steels were developed for parts that are difficult to form using conventional high strength low alloy steels. This datasheet provides information on composition, microstructure, hardness, tensile properties, and bend strength as well as deformation, and fatigue. It also includes information on forming and machining. Filing Code: SA-383. Producer or source: Bethlehem Steel Corporation. Originally published August 1981, Bethlehem B50XF thru B80XF.

TRI-MARK TM-115

Alloy Digest ◽  
1983 ◽  
Vol 32 (8) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Arc Welding ◽  
High Strength ◽  
Heat Treating ◽  
Low Alloy Steels ◽  
Mining Equipment ◽  
Alloy Steels ◽  
Temperature Impact ◽  
Welding Electrode

Abstract TRI-MARK TM-115 is a gas-shielded flux-cored welding electrode for continuous high deposition are welding. It is designed specifically for semiautomatic and automatic arc welding of high-strength low-alloy steels and quenched-and-tempered steels. This gas-sheilded tubular wire can be used for single and multiple-pass welding. It has outstanding low-temperature impact properties. Its applications including mining equipment, large vehicles and similar items. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as heat treating, machining, and joining. Filing Code: SA-392. Producer or source: Tri-Mark Inc..

scholarly journals Erosion and Corrosion Resistance Performance of Laser Metal Deposited High-Entropy Alloy Coatings at Hellisheidi Geothermal Site

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3071
Author(s):  
Andri Isak Thorhallsson ◽  
Francesco Fanicchia ◽  
Emily Davison ◽  
Shiladitya Paul ◽  
Svava Davidsdottir ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Microstructural Characterization ◽  
Corrosion Damage ◽  
Process Equipment ◽  
High Entropy Alloy ◽  
Low Alloy Steels ◽  
Manufacturing Defects ◽  
High Entropy ◽  
Alloy Steels ◽  
Resistance Performance

Geothermal process equipment and accessories are usually manufactured from low-alloy steels which offer affordability but increase the susceptibility of the materials to corrosion. Applying erosion-corrosion-resistant coatings to these components could represent an economical solution to the problem. In this work, testing of two newly developed laser metal deposited high-entropy alloy (LMD-HEA) coatings—CoCrFeNiMo0.85 and Al0.5CoCrFeNi, applied to carbon and stainless steels—was carried out at the Hellisheidi geothermal power plant. Tests in three different geothermal environments were performed at the Hellisheidi site: wellhead test at 194 °C and 14 bar, erosion test at 198 °C and 15 bar, and aerated test at 90 °C and 1 bar. Post-test microstructural characterization was performed via Scanning Eletron Microscope (SEM), Back-Scattered Electrons analysis (BSE), Energy Dispersive X-ray Spectroscopy (EDS), optical microscopy, and optical profilometry while erosion assessment was carried out using an image and chemical analysis. Both the CoCrFeNiMo0.85 and Al0.5CoCrFeNi coatings showed manufacturing defects (cracks) and were prone to corrosion damage. Results show that damage in the CoCrFeNiMo0.85-coated carbon steel can be induced by manufacturing defects in the coating. This was further confirmed by the excellent corrosion resistance performance of the CoCrFeNiMo0.85 coating deposited onto stainless steel, where no manufacturing cracks were observed.

AK STEEL 409 Ni

Alloy Digest ◽  
2021 ◽  
Vol 70 (6) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Cost Effective ◽  
Heat Treating ◽  
Low Alloy Steels ◽  
Service Temperature ◽  
Alloy Steels ◽  
Cost Effective Alternative ◽  
Maximum Service Temperature

Abstract AK Steel 409 Ni is a 11% chromium ferritic stainless steel microalloyed with titanium and nickel. It provides excellent weldability, toughness, and fabricating characteristics superior to those of type 409 stainless steel in thicknesses over 3.05 mm (0.120 in.). This alloy is a cost effective alternative to mild steels and low-alloy steels that also provides superior corrosion and/or oxidation resistance. The recommended maximum service temperature of AK Steel 409 Ni is 730 °C (1350 °F). This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as heat treating and joining. Filing Code: SS-1336. Producer or source: AK Steel Corporation.

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