Effect of Li 2O addition on crystallization behavior of CaO-Al 2O 3-MgO based inclusions

Tomoko Sugimura, Tetsushi Deura, Koichi Sakamoto, Sohei Sukenaga, Noritaka Saito, Kunihiko Nakashima

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The crystallization behavior of CaO-Al 2O 3-MgO oxide powder which is one of the major non-metallic inclusions in Al-killed steel was systematically examined in the present study. 33mass%CaO-62mass% Al 2O 3-5mass%MgO and 30mass%CaO-57mass% Al 2O 3-5mass%MgO-8mass%Li 2O glass powders were heat-treated at 1 073-1 673 K for 8-512 s under air. CaO-Al 2O 3-MgO glass was found to be crystallized immediately after the heat treatments. Moreover, it was revealed that the addition of Li 2O accelerated the crystallization of the glass powders, and controlled aggregation of crystal particles. Additionally, the indentation hardness of crystallized glasses after 512 s heat-treatments was investigated by using a nano-indenter. The addition of Li 2O had the effect of lowering the hardness of samples, which indicates that Li 2O would improve the deformation behavior of aluminate based inclusions.

Original languageEnglish
Pages (from-to)1982-1986
Number of pages5
Journalisij international
Volume51
Issue number12
DOIs
Publication statusPublished - Dec 28 2011

Fingerprint

Crystallization
Powders
Glass
Hardness
Heat treatment
Steel
Indentation
Oxides
Agglomeration
Crystals
Air

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Effect of Li 2O addition on crystallization behavior of CaO-Al 2O 3-MgO based inclusions. / Sugimura, Tomoko; Deura, Tetsushi; Sakamoto, Koichi; Sukenaga, Sohei; Saito, Noritaka; Nakashima, Kunihiko.

In: isij international, Vol. 51, No. 12, 28.12.2011, p. 1982-1986.

Research output: Contribution to journalArticle

Sugimura, Tomoko ; Deura, Tetsushi ; Sakamoto, Koichi ; Sukenaga, Sohei ; Saito, Noritaka ; Nakashima, Kunihiko. / Effect of Li 2O addition on crystallization behavior of CaO-Al 2O 3-MgO based inclusions. In: isij international. 2011 ; Vol. 51, No. 12. pp. 1982-1986.
@article{6a129168f5bb447dbe8da506f6d18545,
title = "Effect of Li 2O addition on crystallization behavior of CaO-Al 2O 3-MgO based inclusions",
abstract = "The crystallization behavior of CaO-Al 2O 3-MgO oxide powder which is one of the major non-metallic inclusions in Al-killed steel was systematically examined in the present study. 33mass{\%}CaO-62mass{\%} Al 2O 3-5mass{\%}MgO and 30mass{\%}CaO-57mass{\%} Al 2O 3-5mass{\%}MgO-8mass{\%}Li 2O glass powders were heat-treated at 1 073-1 673 K for 8-512 s under air. CaO-Al 2O 3-MgO glass was found to be crystallized immediately after the heat treatments. Moreover, it was revealed that the addition of Li 2O accelerated the crystallization of the glass powders, and controlled aggregation of crystal particles. Additionally, the indentation hardness of crystallized glasses after 512 s heat-treatments was investigated by using a nano-indenter. The addition of Li 2O had the effect of lowering the hardness of samples, which indicates that Li 2O would improve the deformation behavior of aluminate based inclusions.",
author = "Tomoko Sugimura and Tetsushi Deura and Koichi Sakamoto and Sohei Sukenaga and Noritaka Saito and Kunihiko Nakashima",
year = "2011",
month = "12",
day = "28",
doi = "10.2355/isijinternational.51.1982",
language = "English",
volume = "51",
pages = "1982--1986",
journal = "ISIJ International",
issn = "0915-1559",
publisher = "Iron and Steel Institute of Japan",
number = "12",

}

TY - JOUR

T1 - Effect of Li 2O addition on crystallization behavior of CaO-Al 2O 3-MgO based inclusions

AU - Sugimura, Tomoko

AU - Deura, Tetsushi

AU - Sakamoto, Koichi

AU - Sukenaga, Sohei

AU - Saito, Noritaka

AU - Nakashima, Kunihiko

PY - 2011/12/28

Y1 - 2011/12/28

N2 - The crystallization behavior of CaO-Al 2O 3-MgO oxide powder which is one of the major non-metallic inclusions in Al-killed steel was systematically examined in the present study. 33mass%CaO-62mass% Al 2O 3-5mass%MgO and 30mass%CaO-57mass% Al 2O 3-5mass%MgO-8mass%Li 2O glass powders were heat-treated at 1 073-1 673 K for 8-512 s under air. CaO-Al 2O 3-MgO glass was found to be crystallized immediately after the heat treatments. Moreover, it was revealed that the addition of Li 2O accelerated the crystallization of the glass powders, and controlled aggregation of crystal particles. Additionally, the indentation hardness of crystallized glasses after 512 s heat-treatments was investigated by using a nano-indenter. The addition of Li 2O had the effect of lowering the hardness of samples, which indicates that Li 2O would improve the deformation behavior of aluminate based inclusions.

AB - The crystallization behavior of CaO-Al 2O 3-MgO oxide powder which is one of the major non-metallic inclusions in Al-killed steel was systematically examined in the present study. 33mass%CaO-62mass% Al 2O 3-5mass%MgO and 30mass%CaO-57mass% Al 2O 3-5mass%MgO-8mass%Li 2O glass powders were heat-treated at 1 073-1 673 K for 8-512 s under air. CaO-Al 2O 3-MgO glass was found to be crystallized immediately after the heat treatments. Moreover, it was revealed that the addition of Li 2O accelerated the crystallization of the glass powders, and controlled aggregation of crystal particles. Additionally, the indentation hardness of crystallized glasses after 512 s heat-treatments was investigated by using a nano-indenter. The addition of Li 2O had the effect of lowering the hardness of samples, which indicates that Li 2O would improve the deformation behavior of aluminate based inclusions.

UR - http://www.scopus.com/inward/record.url?scp=84255214219&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84255214219&partnerID=8YFLogxK

U2 - 10.2355/isijinternational.51.1982

DO - 10.2355/isijinternational.51.1982

M3 - Article

VL - 51

SP - 1982

EP - 1986

JO - ISIJ International

JF - ISIJ International

SN - 0915-1559

IS - 12

ER -