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Materials Science
ArticleName Development of duplex stainless steels compositions
DOI 10.17580/cisisr.2019.02.04
ArticleAuthor A. A. Kazakov, A. I. Zhitenev, A. S. Fedorov, O. V. Fomina

Peter the Great St. Petersburg Polytechnic University (St. Petersburg, Russia):

A. I. Zhitenev, Engineer, “Metallurgical Examination” Lab., e-mail:
A. S. Fedorov, Engineer, “New Technologies and Materials” Scientific and Technological Complex


Central Research Institute of Structural Materials “Prometey” named by I. V. Gorynin of National Research Center “Kurchatov Institute” (St. Petersburg, Russia):

A. A. Kazakov, Dr. Eng., Prof., Head of “Metallurgical Examination” Lab., e-mail:
O. V. Fomina, Dr. Eng., Head of Scientific and Production Complex


Thermodynamic criteria have been developed for a reasonable prediction of compositions of advanced duplex stainless steels. The success of these criteria was studied under the influence of the primary and secondary alloying elements for duplex stainless steels, and the results of these studies have been generalized using multiple regression equations. It has been revealed that the chemical composition optimization of well-known commercial DSS grades, as well as the development of new grades with specified properties can significantly benefit from the use of these equations. Hot physical experiments have shown that thermodynamic modeling well describes the ferrite content found in experimental steels of different compositions at different quenching temperatures.

keywords Duplex stainless steels, thermodynamic criteria, composition development, optimization, sigma phase, hot plastic deformation

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