Dependence of Mechanical and Magnetic Properties of Hypereutectoid Steel on Excess Cementite Morphology

S. V. Burov; Yu. V. Khudorozhkova

doi:10.17804/2410-9908.2016.6.092-099

S. V. Burov, Yu. V. Khudorozhkova

DEPENDENCE OF MECHANICAL AND MAGNETIC PROPERTIES OF HYPEREUTECTOID STEEL ON EXCESS CEMENTITE MORPHOLOGY

DOI: 10.17804/2410-9908.2016.6.092-099

A set of physical and mechanical properties of the U13 steel depending on the morphology of the excess hypereutectoid cementite phase has been revealed. Excess cementite is represented by globules with uniform or layered distribution, by Widmanstätten type needles and by a cementite network. Samples with layer distribution of globular excess cementite demonstrate a better set of strength and plasticity, whereas the worst set of properties are characteristic of samples with a cementite network. The investigated magnetic properties can serve as a basis for the development of methods for electromagnetic testing of excess cementite morphology and the level of strength of hypereutectoid steels after thermomechanical treatment.

Keywords: cementite, cementite network, Widmanstätten cementite, hypereutectoid steel, structure

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С. В. Буров, Ю. В. Худорожкова

ЗАВИСИМОСТЬ МЕХАНИЧЕСКИХ И МАГНИТНЫХ СВОЙСТВ ЗАЭВТЕКТОИДНОЙ СТАЛИ ОТ МОРФОЛОГИИ ИЗБЫТОЧНОГО ЦЕМЕНТИТА

Определен комплекс физико-механических свойств стали У13 с различной морфологией избыточной карбидной фазы – в виде равномерно распределенных глобулей, глобулей с преимущественно слоистым залеганием, в виде остатков видманштеттовых игл и в виде сетки по границам бывшего аустенитного зерна, всего 4 группы образцов. Наилучшим комплексом прочности и пластичности обладают образцы со слоистым распределением глобулярного избыточного цементита (образцы третьей группы), а наихудшим – образцы с цементитной сеткой. Исследование магнитных характеристик дало результаты, которые могут явиться основой для разработки методик электромагнитного контроля морфологии карбидной фазы и уровня механических характеристик углеродистых заэвтектоидных сталей, подвергнутых термомеханичской обработке.

Ключевые слова: цементит, цементитная сетка, видманштеттов цементит, заэвтектоидная сталь, структура

Библиография:

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Библиографическая ссылка на статью

Burov S. V., Khudorozhkova Yu. V. Dependence of Mechanical and Magnetic Properties of Hypereutectoid Steel on Excess Cementite Morphology // Diagnostics, Resource and Mechanics of materials and structures. - 2016. - Iss. 6. - P. 92-99. -
DOI: 10.17804/2410-9908.2016.6.092-099. -
URL: http://dream-journal.org/issues/2016-6/2016-6_114.html
(accessed: 31.10.2024).