Effects of milling parameters on the microstructure and Charpy impact properties of MA/ODS ferritic steels

Noriyuki Y. Iwata; Ryuta Kasada; Akihiko Kimura; Takanari Okuda

doi:10.1016/j.fusengdes.2017.10.025

Effects of milling parameters on the microstructure and Charpy impact properties of MA/ODS ferritic steels

Noriyuki Y. Iwata, Ryuta Kasada, Akihiko Kimura, Takanari Okuda

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

5 Citations (Scopus)

Abstract

ODS ferritic steels were produced by mechanical alloying (MA) in either attritor or planetary ball mills under argon atmosphere and hot extrusion. Milling in argon with controlling excess oxygen (Ex.O) and nitrogen was effective to reduce the particle size of MA powders. Coarse Al₂O₃ particles and fine AlN precipitates were found to be formed in an Al added steel when the Ex.O and nitrogen concentrations are increased. Lowering the Ex.O and nitrogen concentrations in ODS ferritic steels acted as a key parameter for enhancing their impact properties.

Original language	English
Pages (from-to)	24-28
Number of pages	5
Journal	Fusion Engineering and Design
Volume	126
DOIs	https://doi.org/10.1016/j.fusengdes.2017.10.025
Publication status	Published - 2018 Jan
Externally published	Yes

Keywords

Charpy impact property
Mechanical alloying
Microstructure
Milling parameters
ODS ferritic steel

ASJC Scopus subject areas

Civil and Structural Engineering
Nuclear Energy and Engineering
Materials Science(all)
Mechanical Engineering

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10.1016/j.fusengdes.2017.10.025

Cite this

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title = "Effects of milling parameters on the microstructure and Charpy impact properties of MA/ODS ferritic steels",

abstract = "ODS ferritic steels were produced by mechanical alloying (MA) in either attritor or planetary ball mills under argon atmosphere and hot extrusion. Milling in argon with controlling excess oxygen (Ex.O) and nitrogen was effective to reduce the particle size of MA powders. Coarse Al2O3 particles and fine AlN precipitates were found to be formed in an Al added steel when the Ex.O and nitrogen concentrations are increased. Lowering the Ex.O and nitrogen concentrations in ODS ferritic steels acted as a key parameter for enhancing their impact properties.",

keywords = "Charpy impact property, Mechanical alloying, Microstructure, Milling parameters, ODS ferritic steel",

author = "Iwata, {Noriyuki Y.} and Ryuta Kasada and Akihiko Kimura and Takanari Okuda",

note = "Funding Information: This work was supported by JSPS KAKENHI Grant Number JP15K21593 . Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2018",

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doi = "10.1016/j.fusengdes.2017.10.025",

language = "English",

volume = "126",

pages = "24--28",

journal = "Fusion Engineering and Design",

issn = "0920-3796",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Effects of milling parameters on the microstructure and Charpy impact properties of MA/ODS ferritic steels

AU - Iwata, Noriyuki Y.

AU - Kasada, Ryuta

AU - Kimura, Akihiko

AU - Okuda, Takanari

PY - 2018/1

Y1 - 2018/1

N2 - ODS ferritic steels were produced by mechanical alloying (MA) in either attritor or planetary ball mills under argon atmosphere and hot extrusion. Milling in argon with controlling excess oxygen (Ex.O) and nitrogen was effective to reduce the particle size of MA powders. Coarse Al2O3 particles and fine AlN precipitates were found to be formed in an Al added steel when the Ex.O and nitrogen concentrations are increased. Lowering the Ex.O and nitrogen concentrations in ODS ferritic steels acted as a key parameter for enhancing their impact properties.

AB - ODS ferritic steels were produced by mechanical alloying (MA) in either attritor or planetary ball mills under argon atmosphere and hot extrusion. Milling in argon with controlling excess oxygen (Ex.O) and nitrogen was effective to reduce the particle size of MA powders. Coarse Al2O3 particles and fine AlN precipitates were found to be formed in an Al added steel when the Ex.O and nitrogen concentrations are increased. Lowering the Ex.O and nitrogen concentrations in ODS ferritic steels acted as a key parameter for enhancing their impact properties.

KW - Charpy impact property

KW - Mechanical alloying

KW - Microstructure

KW - Milling parameters

KW - ODS ferritic steel

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DO - 10.1016/j.fusengdes.2017.10.025

M3 - Article

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SN - 0920-3796

VL - 126

SP - 24

EP - 28

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

ER -

Effects of milling parameters on the microstructure and Charpy impact properties of MA/ODS ferritic steels

Abstract

Keywords

ASJC Scopus subject areas

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