Microstructure Evolution of Ni-Based ODS Superalloy Powders during Horizontal Rotary Ball Milling

H. E. Lee; Y. Su Kim; J. K. Park; S. T. Oh

doi:10.1515/amm-2017-0187

Microstructure Evolution of Ni-Based ODS Superalloy Powders during Horizontal Rotary Ball Milling

H. E. Lee, Y. Su Kim, J. K. Park, S. T. Oh

Dept. of Materials Science & Engineering

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

2 Scopus citations

Abstract

Microstructure evolution of Ni-based oxide dispersion-strengthened alloy powders with milling time is investigated. The elemental powders having a nominal composition of Ni-15Cr-4.5Al-4W-2.5Ti-2Mo-2Ta-0.15Zr-1.1Y₂O₃ in wt % were ball-milled by using horizontal rotary ball milling with the change of milling velocity. Microstructure observation revealed that large aggregates were formed in the early stages of ball milling, and further milling to 5 h decreased particle size. The average crystalline size, estimated by the peak broadening of XRD, decreased from 28 nm to 15 nm with increasing milling time from 1 h to 5 h. SEM and EPMA analysis showed that the main elements of Ni and Cr were homogeneously distributed inside the powders after ball milling of 5 h.

Original language	English
Pages (from-to)	1253-1255
Number of pages	3
Journal	Archives of Metallurgy and Materials
Volume	62
Issue number	2
DOIs	https://doi.org/10.1515/amm-2017-0187
State	Published - 1 Jun 2017

Keywords

High energy ball milling
Microstructure
Ni-base ODS superalloy
Particle and crystalline size

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title = "Microstructure Evolution of Ni-Based ODS Superalloy Powders during Horizontal Rotary Ball Milling",

abstract = "Microstructure evolution of Ni-based oxide dispersion-strengthened alloy powders with milling time is investigated. The elemental powders having a nominal composition of Ni-15Cr-4.5Al-4W-2.5Ti-2Mo-2Ta-0.15Zr-1.1Y2O3 in wt \% were ball-milled by using horizontal rotary ball milling with the change of milling velocity. Microstructure observation revealed that large aggregates were formed in the early stages of ball milling, and further milling to 5 h decreased particle size. The average crystalline size, estimated by the peak broadening of XRD, decreased from 28 nm to 15 nm with increasing milling time from 1 h to 5 h. SEM and EPMA analysis showed that the main elements of Ni and Cr were homogeneously distributed inside the powders after ball milling of 5 h.",

keywords = "High energy ball milling, Microstructure, Ni-base ODS superalloy, Particle and crystalline size",

author = "Lee, \{H. E.\} and Kim, \{Y. Su\} and Park, \{J. K.\} and Oh, \{S. T.\}",

note = "Publisher Copyright: {\textcopyright} 2017 Polish Academy of Sciences.",

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doi = "10.1515/amm-2017-0187",

language = "English",

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journal = "Archives of Metallurgy and Materials",

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T1 - Microstructure Evolution of Ni-Based ODS Superalloy Powders during Horizontal Rotary Ball Milling

AU - Lee, H. E.

AU - Kim, Y. Su

AU - Park, J. K.

AU - Oh, S. T.

PY - 2017/6/1

Y1 - 2017/6/1

N2 - Microstructure evolution of Ni-based oxide dispersion-strengthened alloy powders with milling time is investigated. The elemental powders having a nominal composition of Ni-15Cr-4.5Al-4W-2.5Ti-2Mo-2Ta-0.15Zr-1.1Y2O3 in wt % were ball-milled by using horizontal rotary ball milling with the change of milling velocity. Microstructure observation revealed that large aggregates were formed in the early stages of ball milling, and further milling to 5 h decreased particle size. The average crystalline size, estimated by the peak broadening of XRD, decreased from 28 nm to 15 nm with increasing milling time from 1 h to 5 h. SEM and EPMA analysis showed that the main elements of Ni and Cr were homogeneously distributed inside the powders after ball milling of 5 h.

AB - Microstructure evolution of Ni-based oxide dispersion-strengthened alloy powders with milling time is investigated. The elemental powders having a nominal composition of Ni-15Cr-4.5Al-4W-2.5Ti-2Mo-2Ta-0.15Zr-1.1Y2O3 in wt % were ball-milled by using horizontal rotary ball milling with the change of milling velocity. Microstructure observation revealed that large aggregates were formed in the early stages of ball milling, and further milling to 5 h decreased particle size. The average crystalline size, estimated by the peak broadening of XRD, decreased from 28 nm to 15 nm with increasing milling time from 1 h to 5 h. SEM and EPMA analysis showed that the main elements of Ni and Cr were homogeneously distributed inside the powders after ball milling of 5 h.

KW - High energy ball milling

KW - Microstructure

KW - Ni-base ODS superalloy

KW - Particle and crystalline size

UR - https://www.scopus.com/pages/publications/85026781694

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DO - 10.1515/amm-2017-0187

M3 - Article

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JO - Archives of Metallurgy and Materials

JF - Archives of Metallurgy and Materials

IS - 2

ER -

Microstructure Evolution of Ni-Based ODS Superalloy Powders during Horizontal Rotary Ball Milling

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Keywords

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