Microstructural and magnetic characteristics of ceramic dispersion strengthened sintered stainless steels after thermal ageing

Csaba Balázsi; Haroune Rachid Ben Zine; Monika Furko; Zsolt Czigány; László Almásy; Vasyl Ryukhtin; Hiroaki Murakami; Gültekin Göller; Onuralp Yucel; Filiz Cinar Sahin; Katalin Balázsi; Satoru Kobayashi; Ákos Horváth

doi:10.1016/j.fusengdes.2019.05.035

Microstructural and magnetic characteristics of ceramic dispersion strengthened sintered stainless steels after thermal ageing

Csaba Balázsi^*, Haroune Rachid Ben Zine, Monika Furko, Zsolt Czigány, László Almásy, Vasyl Ryukhtin, Hiroaki Murakami, Gültekin Göller, Onuralp Yucel, Filiz Cinar Sahin, Katalin Balázsi, Satoru Kobayashi, Ákos Horváth

^*Corresponding author for this work

Department of Metallurgical and Materials Engineering

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The effect of the ultrafine grained silicon nitride and yttria addition to the morphological, structural, mechanical and magnetic properties of the ceramic dispersion strengthened 316 L stainless steels prepared by powder technology has been studied. Four composites have been prepared: 316 L/0.33 wt.% Si₃N₄, 316 L/1 wt.% Si₃N₄ (CDS) and 316 L/0.33 wt.% Y₂O₃, 316 L/1 wt.% Y₂O₃ (ODS). Spark plasma sintering (SPS) was used for fast compaction of milled composite powders. The hardness values have been found to be significantly higher in the cases of CDS and ODS samples in comparison to reference sample, whereas the ODS composites had lower smaller hardness than the CDS composites regardless the content of additives. The magnetic characterization of samples demonstrated that the samples exhibit ferromagnetic property already before ageing and a larger ferromagnetic component was observed as a result of thermal aging. It was proven that in the case of ODS and CDS samples with a low amount of Y₂O₃ or Si₃N₄ the saturation magnetization was slightly dependent on ageing time, however, it exhibited a noticeable change with ageing both at 600 and 800 °C for samples containing higher amount of additives.

Original language	English
Pages (from-to)	46-53
Number of pages	8
Journal	Fusion Engineering and Design
Volume	145
DOIs	https://doi.org/10.1016/j.fusengdes.2019.05.035
Publication status	Published - Aug 2019

Bibliographical note

Publisher Copyright:
© 2019

Funding

The support of Hungarian-Japanese project "Development of electromagnetic non-destructive evaluation method for aging degradation of chromium steels at high temperatures” financed by Hungarian Academy of Sciences (HAS) and Japan Society for the Promotion of Science (JSPS) is highly acknowledged. Mr. Haroune Rachid Ben Zine thanks to Hungaricum Stipendium and MTA EK project “Nanostructural ODS steel development” for support. Thanks to COST Action CA15102 Solutions for Critical Raw Materials under Extreme Conditions support. SANS measurements were carried out at the CANAM infrastructure through MŠMT project No. LM2015056 and infrastructure of Reactors LVR-15 and LR-0, which is financially supported by project LM2015074.

Funders	Funder number
Japan Society for the Promotion of Science	LM2015056, LR-0, LM2015074
Magyar Tudományos Akadémia

Keywords

Ceramic dispersion strengthened steels
EBSD
Hardness
Magnetic properties
Microstructure

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10.1016/j.fusengdes.2019.05.035

Cite this

Balázsi, C., Zine, H. R. B., Furko, M., Czigány, Z., Almásy, L., Ryukhtin, V., Murakami, H., Göller, G., Yucel, O., Sahin, F. C., Balázsi, K., Kobayashi, S., & Horváth, Á. (2019). Microstructural and magnetic characteristics of ceramic dispersion strengthened sintered stainless steels after thermal ageing. Fusion Engineering and Design, 145, 46-53. https://doi.org/10.1016/j.fusengdes.2019.05.035

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title = "Microstructural and magnetic characteristics of ceramic dispersion strengthened sintered stainless steels after thermal ageing",

abstract = "The effect of the ultrafine grained silicon nitride and yttria addition to the morphological, structural, mechanical and magnetic properties of the ceramic dispersion strengthened 316 L stainless steels prepared by powder technology has been studied. Four composites have been prepared: 316 L/0.33 wt.% Si3N4, 316 L/1 wt.% Si3N4 (CDS) and 316 L/0.33 wt.% Y2O3, 316 L/1 wt.% Y2O3 (ODS). Spark plasma sintering (SPS) was used for fast compaction of milled composite powders. The hardness values have been found to be significantly higher in the cases of CDS and ODS samples in comparison to reference sample, whereas the ODS composites had lower smaller hardness than the CDS composites regardless the content of additives. The magnetic characterization of samples demonstrated that the samples exhibit ferromagnetic property already before ageing and a larger ferromagnetic component was observed as a result of thermal aging. It was proven that in the case of ODS and CDS samples with a low amount of Y2O3 or Si3N4 the saturation magnetization was slightly dependent on ageing time, however, it exhibited a noticeable change with ageing both at 600 and 800 °C for samples containing higher amount of additives.",

keywords = "Ceramic dispersion strengthened steels, EBSD, Hardness, Magnetic properties, Microstructure",

author = "Csaba Bal{\'a}zsi and Zine, {Haroune Rachid Ben} and Monika Furko and Zsolt Czig{\'a}ny and L{\'a}szl{\'o} Alm{\'a}sy and Vasyl Ryukhtin and Hiroaki Murakami and G{\"u}ltekin G{\"o}ller and Onuralp Yucel and Sahin, {Filiz Cinar} and Katalin Bal{\'a}zsi and Satoru Kobayashi and {\'A}kos Horv{\'a}th",

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year = "2019",

month = aug,

doi = "10.1016/j.fusengdes.2019.05.035",

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Balázsi, C, Zine, HRB, Furko, M, Czigány, Z, Almásy, L, Ryukhtin, V, Murakami, H, Göller, G , Yucel, O , Sahin, FC, Balázsi, K, Kobayashi, S & Horváth, Á 2019, 'Microstructural and magnetic characteristics of ceramic dispersion strengthened sintered stainless steels after thermal ageing', Fusion Engineering and Design, vol. 145, pp. 46-53. https://doi.org/10.1016/j.fusengdes.2019.05.035

TY - JOUR

T1 - Microstructural and magnetic characteristics of ceramic dispersion strengthened sintered stainless steels after thermal ageing

AU - Balázsi, Csaba

AU - Zine, Haroune Rachid Ben

AU - Furko, Monika

AU - Czigány, Zsolt

AU - Almásy, László

AU - Ryukhtin, Vasyl

AU - Murakami, Hiroaki

AU - Göller, Gültekin

AU - Yucel, Onuralp

AU - Sahin, Filiz Cinar

AU - Balázsi, Katalin

AU - Kobayashi, Satoru

AU - Horváth, Ákos

PY - 2019/8

Y1 - 2019/8

N2 - The effect of the ultrafine grained silicon nitride and yttria addition to the morphological, structural, mechanical and magnetic properties of the ceramic dispersion strengthened 316 L stainless steels prepared by powder technology has been studied. Four composites have been prepared: 316 L/0.33 wt.% Si3N4, 316 L/1 wt.% Si3N4 (CDS) and 316 L/0.33 wt.% Y2O3, 316 L/1 wt.% Y2O3 (ODS). Spark plasma sintering (SPS) was used for fast compaction of milled composite powders. The hardness values have been found to be significantly higher in the cases of CDS and ODS samples in comparison to reference sample, whereas the ODS composites had lower smaller hardness than the CDS composites regardless the content of additives. The magnetic characterization of samples demonstrated that the samples exhibit ferromagnetic property already before ageing and a larger ferromagnetic component was observed as a result of thermal aging. It was proven that in the case of ODS and CDS samples with a low amount of Y2O3 or Si3N4 the saturation magnetization was slightly dependent on ageing time, however, it exhibited a noticeable change with ageing both at 600 and 800 °C for samples containing higher amount of additives.

AB - The effect of the ultrafine grained silicon nitride and yttria addition to the morphological, structural, mechanical and magnetic properties of the ceramic dispersion strengthened 316 L stainless steels prepared by powder technology has been studied. Four composites have been prepared: 316 L/0.33 wt.% Si3N4, 316 L/1 wt.% Si3N4 (CDS) and 316 L/0.33 wt.% Y2O3, 316 L/1 wt.% Y2O3 (ODS). Spark plasma sintering (SPS) was used for fast compaction of milled composite powders. The hardness values have been found to be significantly higher in the cases of CDS and ODS samples in comparison to reference sample, whereas the ODS composites had lower smaller hardness than the CDS composites regardless the content of additives. The magnetic characterization of samples demonstrated that the samples exhibit ferromagnetic property already before ageing and a larger ferromagnetic component was observed as a result of thermal aging. It was proven that in the case of ODS and CDS samples with a low amount of Y2O3 or Si3N4 the saturation magnetization was slightly dependent on ageing time, however, it exhibited a noticeable change with ageing both at 600 and 800 °C for samples containing higher amount of additives.

KW - Ceramic dispersion strengthened steels

KW - EBSD

KW - Hardness

KW - Magnetic properties

KW - Microstructure

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U2 - 10.1016/j.fusengdes.2019.05.035

DO - 10.1016/j.fusengdes.2019.05.035

M3 - Article

AN - SCOPUS:85066137537

SN - 0920-3796

VL - 145

SP - 46

EP - 53

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

ER -

Microstructural and magnetic characteristics of ceramic dispersion strengthened sintered stainless steels after thermal ageing

Abstract

Bibliographical note

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Keywords

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