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

被引：3
|
作者：
Rodionova, Irina [1 ]
Amezhnov, Andrey [1 ]
Alekseeva, Ekaterina [2 ]
Gladchenkova, Yuliya [3 ]
Vasechkina, Irina [4 ]
机构：
[1] Bardin Cent Res Inst Ferrous Met, Moscow 105005, Russia
[2] Peter Great St Petersburg Polytech Univ, Sci & Technol Complex New Technol & Mat, Inst Adv Engn Technol, St Petersburg 194064, Russia
[3] Lomonosov Moscow State Univ, Dept Chem, Moscow 119991, Russia
[4] Natl Univ Sci & Technol MISIS, Dept New Mat & Nanotechnol, Moscow 119049, Russia
来源：
METALS | 2021年 / 11卷 / 05期
关键词：
low-alloy steels; oil-field pipelines; corrosion resistance; microstructure; chemical composition; nanosized precipitates; excess phases; vanadium carbonitride; niobium carbonitride; MICROSTRUCTURE PARAMETERS; CHEMICAL-COMPOSITION; BEHAVIOR; CRACKING; NB;
D O I：
10.3390/met11050766
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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 degrees 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 degrees C.
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页数：15
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