Mechanical alloying and severe plastic deformation of nanocrystalline high-nitrogen stainless steels

Dorofeev, G.A.; Sapegina, I.V.; Lad'yanov, V.I.; Pushkarev, B.E.; Pechina, E.A.; Prokhorov, D.V.

Авторы: Dorofeev G.A., Sapegina I.V., Lad'yanov V.I., Pushkarev B.E., Pechina E.A., Prokhorov D.V.
Журнал: Physics of Metals and Metallography
Том: 113
Номер: 10
Год издания: 2012
Издательство: Pleiades Publishing, Inc.
Местоположение издательства: New York, USA
Первая страница: 963
Последняя страница: 973
DOI: 10.1134/S0031918X1210002X
Аннотация: Highnitrogen, nickelfree nanocrystalline stainless steels with Fe–(18–20)Cr–1N and Fe–(23– 25)Cr–(10–11)Mn–1N (wt %) compositions were obtained by mechanical alloying (MA) in a highenergy planetary ball mill in an argon atmosphere. As a source of nitrogen, we used chromium and manganese nitrides that enter the composition of the powder mixture with pure metal components. Comparative studies of the evolution of the structure during MA using Xray diffraction, Mössbauer spectroscopy, and transmis sion and scanning electron microscopy have demonstrated that, in an Fe–Cr–N system, a ferrite bcc struc ture is preserved for up to 120 h of MA. In an Fe–Cr–Mn–N system, where nitrogen was supplied by chro mium nitrides, complete austenization occurred after 60 h of the MA. The maximum acceleration of the for mation kinetics of a highnitrogen austenite was obtained in an Fe–Cr–Mn–N system, where nitrogen was obtained from a manganese nitride. The mechanisms of solidphase reactions in powder mixtures during MA are discussed under both the deformationinduced dissolution of nitrides in a metallic matrix and the stability of a nitrogensupersaturated ferrite with respect to α → γ transformation.
Добавил в систему: Дорофеев Геннадий Алексеевич

	ИСТИНА	Войти в систему Регистрация
	ИПМех РАН
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

ИПМех РАН

Mechanical alloying and severe plastic deformation of nanocrystalline high-nitrogen stainless steelsстатья