DILATOMETRIC AND METALLOGRAPHIC STUDIES FOR VERIFYING PHASE TRANSFORMATIONS MESOSCALE MODEL
Journal Title: Prace Instytutu Metalurgii Żelaza - Year 2018, Vol 70, Issue 3
Abstract
The aim of the study was to perform a series of dilatometric experiments, which would be used to further verify and validate a phase transformation mesoscale model based on the cellular automata method. As a result of the study, a CCT graph for steel S355J was developed, which was the basis for further studies of phase transformation kinetics. Subsequently, the study of mi-crostructure using light and scanning microscopy allowed for a qualitative determination of the occurrence of individual structural components in each dilatometric sample. The results of the quantitative analysis of microstructures were used to de-termine the average primary austenite grain size, as well as to develop a digital material representation. The studies of phase transformation kinetics were carried out using an original computer tool for quantitative dilatometric analysis. Thus, the curves of volume fraction changes of individual structural components as a function of time and temperature were obtained on the basis of data directly from the recorded dilatometric tests. The presented results of quantitative dilatometric analysis with final volume fractions of individual structural components for various cooling rates are a valuable source of data for the direct validation of the mesoscale model of phase transformations.
Authors and Affiliations
Jarosław Opara, Władysław Zalecki
Keywords
Related Articles
- EP ID EP432167
- DOI 10.32730/imz.0137-9941.18.3.04
- Views 76
- Downloads 0
Gender policy in higher education: problems of inequality and ways of solutions.
This article analyzes gender inequality in higher education of the country and represents the existing horizontal and vertical segregations. It presents the statistical differences concerning the gen...
OPERATION OF A POWER UNIT AS A PEAK UNIT AND ITS IMPACT ON THE ECONOMY AND RELIABILITY OF THE POWER SYSTEM
Wind power plants are at the forefront of the development of renewable energy sources (RES) but their operation depends on changing weather conditions. Favouring energy obtained from renewable sources forces the operatio...
LABORATORY STUDIES ON THE DEVELOPMENT OF COMPOSITE PELLETS FOR DEEP REFINING OF STEEL FROM NON-METALLIC INCLUSIONS
The paper presents the laboratory research on the development of a new type of refining materials in the form of composite pellets for deep refining of steel from non-metallic inclusions, measured by the total oxygen con...
OPRACOWANIE MODELI KRAJOWEGO ZUŻYCIA PRĘTÓW ŻEBROWANYCH W LATACH 2004–2017 Z UWZGLĘDNIENIEM RYNKU CEMENTU I KATEGORII OBIEKTÓW BUDOWLANYCH
Celem niniejszej publikacji jest opracowanie modeli ekonometrycznych określających zależności między zużyciem prętów żebrowanych (zmienna objaśniana) w krajowym budownictwie w latach 2004–2017 i materiałami substytucyjny...
EKSPLOATACJA RUROCIĄGÓW PARY – DIAGNOSTYKA I WNIOSKI EKSPLOATACYJNE
Materiały konstrukcyjne bloków energetycznych są eksploatowane w warunkach długotrwałego oddziaływania zmiennych pól naprężeń i temperatur oraz są narażone na oddziaływanie środowiska gazów i cieczy. Czynniki te powodują...