|
|
Effect of Magnesium on Evolution of Oxide and Sulphide in Liquid Iron at 1873 K |
Tong-sheng ZHANG,De-yong WANG,Mao-fa JIANG |
Institute of Ferrous Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China |
|
|
Abstract To reveal the effects of magnesium on the evolution of oxide and sulphide inclusions in liquid iron, both thermodynamic calculations and deoxidization experiments were carried out. The samples extracted from the liquid iron were polished and analyzed by optical microscopy and scanning electron microscopy. The results showed that magnesium could modify oxide and sulphide inclusions simultaneously. Spherical MgO and irregular spinel inclusions were observed in the samples. The elongated MnS inclusions were replaced by small MgO��MgS or MgO��MgS��MnS complex inclusions, and the sulphides were distributed dispersively. The evolution mechanisms of inclusions were discussed comprehensively, and a proposed model for the formation of oxysulphide was set up.
|
Received: 05 November 2013
Published: 04 December 2014
|
Fund:National Natural Science Foundation of China;Fundamental Research Funds for the Central Universities of China;Fundamental Research Funds for the Central Universities of China |
|
|
|
[1] |
Hai-yan Tang*,Yong Wang,Guang-hui Wu,Peng Lan,Jia-quan Zhang. Inclusion evolution in 50CrVA spring steel by optimization of refining slag[J]. Chinese Journal of Iron and Steel, 2017, 24(9): 879-887. |
[2] |
Hao Li,Yan-chong Yu,,Xiang Ren,Shao-hua Zhang,She-bin Wang,,*. Evolution of Al2O3 inclusions by cerium treatment in low carbon high manganese steel[J]. Chinese Journal of Iron and Steel, 2017, 24(9): 925-934. |
[3] |
Jia-long Tian,,Wei Wang,,Wei Yan,,Zhou-hua Jiang,Yi-yin Shan,,Ke Yang. Microstructure characteristics of segregation zone in 17-4PH stainless steel piston rod[J]. Chinese Journal of Iron and Steel, 2017, 24(7): 718-723. |
[4] |
Liang Yang,,Bryan A. Webler,Guo-guang Cheng. Precipitation behavior of titanium nitride on a primary inclusion particle during solidification of bearing steel[J]. Chinese Journal of Iron and Steel, 2017, 24(7): 685-690. |
[5] |
Rui Wang,Yan-ping Bao,*,Yi-hong Li,Tai-quan Li,Di Chen. Effect of slag composition on steel cleanliness in interstitial-free steel[J]. Chinese Journal of Iron and Steel, 2017, 24(6): 579-585. |
[6] |
Ze-an Lv,,Hong-wei Ni,,*,Hua Zhang,,Cheng-song Liu,,**. Evolution of MnS inclusions in Ti-bearing X80 pipeline steel[J]. Chinese Journal of Iron and Steel, 2017, 24(6): 654-660. |
|
|
|
|