Yttrium modifying influence on the shape and amount of nonmetallic inclusions in the austenitic high alloy steel
DOI:
https://doi.org/10.31498/2225-6733.31.2015.71440Keywords:
contaminants, austenitic high alloy steel service properties, nonmetallic inclusions, shape and size of inclusions, yttrium, refining, modification of the shape and size of nonmetallic inclusionsAbstract
Yttrium influence on the form and amount of non-metallic inclusions in steel 06H23N18M5 was studied. It has been found that yttrium binds oxygen and other elements into heterogeneous compounds, it resulting in the transition of impurities into passive state. Oxide inclusions, sulfide inclusions and globules formed as a result of steel components reactions with oxygen, sulfur and nitrogen dissolved in metal are mostly found in the structure. It was found that by modifying and refining austenitic steels with yttrium service properties of the deposited layer can be adjusted. X-ray diffraction and X-ray spectrum analysis revealed that the modified steel 06H23N18M5 + 0.02% Y has a heterogeneous structure with uniformly distributed inclusions of σ-phase and composite carbides (Fe, Cr, Mo) 23C6. It is possible that Y modification resulted in the appearance of chemically resistant intermetallic σ-phase in these steels, for nucleation was facilitated by increasing the number of crystallization centers as dispersed primary yttrium oxy-sulfide compoundsReferences
Барахтин Б.К. Металлы и сплавы. Анализ и исследование. Физико-аналитические методы исследования металлов и сплавов. Неметаллические включения: справочник / Б.К. Барахтин, А.М. Немец / Под ред. И.П. Калинкина. – СПб. : Профессионал, 2006. – 486 с.
Патюпкин А.В. Повышение кавитационно-коррозионной стойкости наплавленного металла типа 06Х23Н18М5 путем модифицирования его иттрием / А.В. Патюпкин, Г.А. Бялик // Нові матеріали і технології в металургії та машинобудуванні. – 2006. – № 1. – С. 24-29.
Кудрин В.А. Металлургия стали : учебник для ВУЗов / В.А. Кудрин. – 2-е изд., перераб. и доп. – М. : Металлургия, 1989. – 560 с.
Виноград М.И. Включения в стали и ее свойства / М.И. Виноград. – М. : Металлургиздат, 1963. – 252 с.
Деев Г.Ф. Дефекты сварных швов / Г.Ф. Деев, И.Р. Пацкевич. – Киев : Наукова думка, 1984. – 208 с.
Абралов М.А. Влияние церия и иттрия на структуру и свойства металла шва на сплаве 06ХН28МДТ / М.А. Абралов // Автоматическая сварка. – 1978. – № 9. – С. 5-7.
Браун Н.П. Микролегирование литых жаропрочных сталей / М.П. Браун, Н.П. Александрова, Л.Д. Тихоновская, И.Г. Курдюмова. – Киев : Наукова думка, 1974. – 239 с.
Downloads
How to Cite
Issue
Section
License
The journal «Reporter of the Priazovskyi State Technical University. Section: Technical sciences» is published under the CC BY license (Attribution License).
This license allows for the distribution, editing, modification, and use of the work as a basis for derivative works, even for commercial purposes, provided that proper attribution is given. It is the most flexible of all available licenses and is recommended for maximum dissemination and use of non-restricted materials.
Authors who publish in this journal agree to the following terms:
1. Authors retain the copyright of their work and grant the journal the right of first publication under the terms of the Creative Commons Attribution License (CC BY). This license allows others to freely distribute the published work, provided that proper attribution is given to the original authors and the first publication of the work in this journal is acknowledged.
2. Authors are allowed to enter into separate, additional agreements for non-exclusive distribution of the work in the same form as published in this journal (e.g., depositing it in an institutional repository or including it in a monograph), provided that a reference to the first publication in this journal is maintained.
