The influence of boron on the microstructure of a 9wt% Cr ferritic steel

Mihaela Albu; Peter Mayr; Francisca Mendez Martin; Gerald Kothleitner

doi:10.3184/096034011X13059091965585

The influence of boron on the microstructure of a 9wt% Cr ferritic steel

Mihaela Albu^*, Peter Mayr, Francisca Mendez Martin, Gerald Kothleitner

^*Korrespondierende/r Autor/-in für diese Arbeit

Publikation: Beitrag in einer Fachzeitschrift › Artikel › Begutachtung

Abstract

A comprehensive investigation of the microstructural evolution during heat treatment and creep exposure of a boron-alloyed 9wt% Cr steel, with special emphasis on the role of boron was performed. Samples from different stages of the normalizing and tempering heat treatment cycle, as well as creep tested material were investigated by energy filtered and high resolution transmission electron microscopy combined with electron energy loss- and X-ray-spectroscopy. The substitution of carbon by boron in chromium carbides was found only after 50 hours long-term tempering at 780°C and creep exposure at 650°C for 8,971 hours. No enrichment in boron on the particle matrix interface was detected. Nevertheless, formation of boron-rich carbides B0.38C0.62 and BC0.38Si0.04 was already observed after 4 hours of tempering.

Originalsprache	englisch
Seiten (von - bis)	120-125
Fachzeitschrift	Materials at High Temperatures
Jahrgang	28
Ausgabenummer	2
DOIs	https://doi.org/10.3184/096034011X13059091965585
Publikationsstatus	Veröffentlicht - 2014

ASJC Scopus subject areas

Werkstoffwissenschaften (insg.)

Fields of Expertise

Advanced Materials Science

Treatment code (Nähere Zuordnung)

Basic - Fundamental (Grundlagenforschung)

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10.3184/096034011X13059091965585

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title = "The influence of boron on the microstructure of a 9wt% Cr ferritic steel",

abstract = "A comprehensive investigation of the microstructural evolution during heat treatment and creep exposure of a boron-alloyed 9wt% Cr steel, with special emphasis on the role of boron was performed. Samples from different stages of the normalizing and tempering heat treatment cycle, as well as creep tested material were investigated by energy filtered and high resolution transmission electron microscopy combined with electron energy loss- and X-ray-spectroscopy. The substitution of carbon by boron in chromium carbides was found only after 50 hours long-term tempering at 780°C and creep exposure at 650°C for 8,971 hours. No enrichment in boron on the particle matrix interface was detected. Nevertheless, formation of boron-rich carbides B0.38C0.62 and BC0.38Si0.04 was already observed after 4 hours of tempering",

author = "Mihaela Albu and Peter Mayr and {Mendez Martin}, Francisca and Gerald Kothleitner",

year = "2014",

doi = "10.3184/096034011X13059091965585",

language = "English",

volume = "28",

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journal = "Materials at High Temperatures",

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publisher = "Elsevier B.V.",

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T1 - The influence of boron on the microstructure of a 9wt% Cr ferritic steel

AU - Albu, Mihaela

AU - Mayr, Peter

AU - Mendez Martin, Francisca

AU - Kothleitner, Gerald

PY - 2014

Y1 - 2014

N2 - A comprehensive investigation of the microstructural evolution during heat treatment and creep exposure of a boron-alloyed 9wt% Cr steel, with special emphasis on the role of boron was performed. Samples from different stages of the normalizing and tempering heat treatment cycle, as well as creep tested material were investigated by energy filtered and high resolution transmission electron microscopy combined with electron energy loss- and X-ray-spectroscopy. The substitution of carbon by boron in chromium carbides was found only after 50 hours long-term tempering at 780°C and creep exposure at 650°C for 8,971 hours. No enrichment in boron on the particle matrix interface was detected. Nevertheless, formation of boron-rich carbides B0.38C0.62 and BC0.38Si0.04 was already observed after 4 hours of tempering

AB - A comprehensive investigation of the microstructural evolution during heat treatment and creep exposure of a boron-alloyed 9wt% Cr steel, with special emphasis on the role of boron was performed. Samples from different stages of the normalizing and tempering heat treatment cycle, as well as creep tested material were investigated by energy filtered and high resolution transmission electron microscopy combined with electron energy loss- and X-ray-spectroscopy. The substitution of carbon by boron in chromium carbides was found only after 50 hours long-term tempering at 780°C and creep exposure at 650°C for 8,971 hours. No enrichment in boron on the particle matrix interface was detected. Nevertheless, formation of boron-rich carbides B0.38C0.62 and BC0.38Si0.04 was already observed after 4 hours of tempering

U2 - 10.3184/096034011X13059091965585

DO - 10.3184/096034011X13059091965585

M3 - Article

SN - 1878-6413

VL - 28

SP - 120

EP - 125

JO - Materials at High Temperatures

JF - Materials at High Temperatures

IS - 2

ER -

The influence of boron on the microstructure of a 9wt% Cr ferritic steel

Abstract

ASJC Scopus subject areas

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