Publication detail
Comparison of methods for determining the ferrite content in duplex cast steels
KAŇA, V. PERNICA, V. ZÁDĚRA, A. KRUTIŠ, V.
English title
Comparison of methods for determining the ferrite content in duplex cast steels
Type
journal article in Web of Science
Language
en
Original abstract
The paper is concerned with comparing the methods for determining the ferrite content in castings from duplex stainless steels. It uses Schaeffler diagram, empirical formula based calculation, image analysis of metallographic sample, X-ray diffraction and measurement with a feritscope. The influence of wall thickness of the casting on the ferrite content was tested too. The results of the experiments show that the casting thickness of 25 or 60 mm does not have a significant effect on the measured amount of ferrite. The image analysis of metallographic sample and the measurement with the feritscope appear to be the most suitable methods. On the contrary, predictive methods, such as Schaeffler diagram or empirical formula based calculation are only indicative and cannot replace the real measurements. X-ray diffraction seems to be the least suitable measuring method. Values of ferrite content measured in such a way often deviated from the values measured by image analysis and with feritscope.
English abstract
The paper is concerned with comparing the methods for determining the ferrite content in castings from duplex stainless steels. It uses Schaeffler diagram, empirical formula based calculation, image analysis of metallographic sample, X-ray diffraction and measurement with a feritscope. The influence of wall thickness of the casting on the ferrite content was tested too. The results of the experiments show that the casting thickness of 25 or 60 mm does not have a significant effect on the measured amount of ferrite. The image analysis of metallographic sample and the measurement with the feritscope appear to be the most suitable methods. On the contrary, predictive methods, such as Schaeffler diagram or empirical formula based calculation are only indicative and cannot replace the real measurements. X-ray diffraction seems to be the least suitable measuring method. Values of ferrite content measured in such a way often deviated from the values measured by image analysis and with feritscope.
Keywords in English
Non-destructive testing, Duplex cast steel, Metallographic evaluation, Feritscope, XRD
Released
15.05.2019
Publisher
POLSKA AKAD NAUK, POLISH ACAD SCIENCES, PL DEFILAD 1, WARSZAWA, 00-901, POLAND
ISSN
1897-3310
Volume
19
Number
2
Pages from–to
85–90
Pages count
6
BIBTEX
@article{BUT157348,
author="Václav {Kaňa} and Vítězslav {Pernica} and Antonín {Záděra} and Vladimír {Krutiš},
title="Comparison of methods for determining the ferrite content in duplex cast steels",
year="2019",
volume="19",
number="2",
month="May",
pages="85--90",
publisher="POLSKA AKAD NAUK, POLISH ACAD SCIENCES, PL DEFILAD 1, WARSZAWA, 00-901, POLAND",
issn="1897-3310"
}