Яровчук Алевтина Васильевна

Degree: канд. техн. наук

Position: старший научный сотрудник лаборатории радиационного материаловедения

Phone: +7 (7273) 86-68-00 (доп. 3-71)

Email: yarovchuk@mail.ru

Count articles: 1

Author articles

Pitting corrosion in cold-deformed 12Cr18Ni10Ti stainless steel

Authors: Максимкин Олег Прокофьевич, Цай Кира Викторовна, Яровчук Алевтина Васильевна, Рубан Сергей Владимирович

Keywords: сталь, коррозия, деформация, мартенсит

Organisation: РГП «Институт ядерной физики»

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The results of studies on pitting corrosion of 12Cr18Ni10Ti stainless steel austenized after tensile testing at room and low (−20 and −60°C ) temperatures are given. It has been established that local corrosion resistance of cold-deformed stainless steel depends on strain and temperature which determine structure-phase state of material. It is shown that at low degrees of deformation dislocation substructure formed of quasi-homogeneous honeycomb type which has a stabilizing effect on the state of the steel, resulting in increase of resistance to corrosion. Large degree of plastic deformation (>30%) along with the formation processes of high fragmented inhomogeneous structure in 12Cr18Ni10Ti steel initiate phase transformation γ → α΄ to form α΄-martensite, which negatively affects the corrosion resistance of the material.