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Выявление взаимосвязи "структура-свойства" в высокопрочном чугуне марки ВЧ50 без термообработки

выпускная квалификационная работа бакалавра

Выявление взаимосвязи "структура-свойства" в высокопрочном чугуне марки ВЧ50 без термообработки

Abstract

На 42с., 21 рисунок, 9 таблиц Тема выпускной квалификационной работы: «Выявление взаимосвязи структура-свойства в высокопрочном чугуне марки ВЧ50 без термообработки». Данная работа посвящена исследованию структуры образцов из вы-сокопрочного чугуна с шаровидным графитом, установлению взаимосвязи параметров структуры с механическими свойствами и построению зависимостей механических свойств от структуры. 1. Изучение литературы по влиянию структуры высокопрочного чу-гуна на его свойства и методик исследования их взаимосвязи. 2. Исследование образцов из ВЧ50, качественная и количественная оценка параметров структуры, построение однопараметрических зависимостей и моделей механических свойств. Работа проведена на базе СПБПУ в научно-испытательной лаборатории «Металлургическая экспертиза», где был проведен металлографический анализ материалов исследования с помощью оптической микроскопии. Оценка параметров структуры была сделана с помощью анализатора изображений Thixomet PRO. В результате были построены статистически значимые взаимосвязи «структура-свойства», описывающие значения пре-дела прочности, текучести и твердости в ВЧШГ с феррито-перлитной мат-рицей без термообработки.

42 pages, 21 figures, 9 tables The theme of the final qualification work: "Identification of «structure-properties» relationships in high-strength ductile iron grade EN-JS1050 with-out heat treatment." This work is dedicated to the study of the structure of ductile iron speci-mens with spherical graphite, revealing of the relationship of structural param-eters with mechanical properties, and plotting of the dependencies of mechani-cal properties on the structure. 1. A literature review on the influence of high-strength cast iron struc-ture on its properties and methods for studying their relationships. 2. Examination of specimens, qualitative and quantitative assessment of the structure parameters, the plotting of one-parameter dependencies and models of mechanical properties. The work was carried out on the basis of SPBSTU in the research and testing laboratory “Metallurgical Expertise”, where a metallographic analysis of research materials was carried out using optical microscopy. The structure parameters were evaluated using the Thixomet PRO image analyzer. As a re-sult, statistically significant “structure-property” relationships were revealed. They describe the values of tensile strength, yield strength and hardness in a ductile iron with a ferrite-pearlite matrix without heat treatment using micro-structural parameters.

Keywords

графит, ductile iron, graphite, Ð¼ÐµÑ Ð°-нические свойства, перлит, ВЧ 50 (EN-JS1050), quantitative estimation of structure parame-ters, mechanical properties, количественная оценка параметров структуры, perlite, высокопрочный чугун с шаровидным графитом, ВЧ50 (EN-JS1050)

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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