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
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2011
Y1 - 2011
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.
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U2 - 10.2355/isijinternational.51.1982
DO - 10.2355/isijinternational.51.1982
M3 - Article
AN - SCOPUS:84255214219
VL - 51
SP - 1982
EP - 1986
JO - Transactions of the Iron and Steel Institute of Japan
JF - Transactions of the Iron and Steel Institute of Japan
SN - 0915-1559
IS - 12
ER -