Abstract：Magnesium oxide particles (MgO and MgO·Al2O3) have good distribution characteristics in molten steel. Under appropriate conditions, adding magnesium oxide particles to molten steel can modify and refine inclusions, refine austenite grains and induce intragranular ferrite nucleation, and ultimately achieve the optimization of steel properties. The addition method of magnesium oxide particles, influence on inclusions, pinning effect on austenite grains, nucleation mechanism of induced ferrite and the influence on mechanical properties are summarized. The results show that the decreasing density difference and wetting angle particles or combination of strong reaction elements are conducive to improving the yield, and the powder pre-dispersion method combined with field stirring is conducive to further improving the uniformity of particles in molten steel. The reasonable addition amount(mass fraction) of magnesium oxide particles is 0.01%-0.03%, and the average size of inclusions is controlled at 1-2 μm, then the inclusions can be modified into MgO·Al2O3 or MgS. The addition of magnesium oxide is conducive to refining austenite grains, improving sulfide distribution and increasing the proportion of acicular ferrite. When the addition amount is 0.05%, the interlocking of acicular ferrite is optimal, and the austenite grains are minimum. When the addition amount of ultrafine magnesium oxide particles is about 0.05%, the mechanical properties of steel materials are optimal, the yield strength, tensile strength and impact toughness are significantly improved.
鸡永帅, 李阳, 姜周华, 孙萌, 马彦硕. 外加镁系氧化物粒子在钢铁材料制备中的进展[J]. 中国冶金, 2023, 33(2): 8-21.
JI Yong-shuai, LI Yang, JIANG Zhou-hua, SUN Meng, MA Yan-shuo. Progress of adding magnesium oxide particles in preparation of iron and steel materials[J]. China Metallurgy, 2023, 33(2): 8-21.
Bawane K,Lu K. Microstructure evolution of nanostructured ferritic alloy with and without Cr3C2 coated SiC at high temperatures[J]. Journal of Materials Science and Technology,2020,43:126.
[2]
JIANG S H,WANG H,WU Y,et al. Ultrastrong steel via minimal lattice misfit and high-density nanoprecipitation[J]. Nature,2017,544:460.
[3]
ZHANG C,ZHONG H G,WU C S,et al. Effect of cooling rate and forced convection on as-cast structure of 2205 duplex stainless steel[J]. China Foundry,2015,12(1):32.
[4]
董瀚. 钢铁材料研发的技术进展[J]. 中国冶金,2008,18(10):1.
[5]
CHEN B,YANG J X,OUYANG Z Y. Life cycle assessment of internal recycling options of steel slag in Chinese iron and steel industry[J]. Journal of Iron and Steel Research International,2011,18(7):33.
[6]
Takamura J I,Mizoguchi S. Roles of oxides in steel performance[C]//Proceedings of the 6th International Iron and Steel Congress. Nagoya:ISIJ,1990:591.
[7]
Mizoguchi S,Takamura J I. Control of oxides as inoculants[C]//Proceedings of the 6th International Iron and Steel Congress. Nagoya:ISIJ,1990:598.
[8]
Yang J,Zhu K,Wand G D. Progress in the technological development of oxide metallurgy for manufacturing steel plates with excellent HAZ toughness[J]. Baosteel Technical Research,2008,2(4):43.
[9]
Kitani Y,Ikeda R,Yasuda K,et al. Improvement of HAZ toughness for high heat input welding by using boron diffusion from weld metal[J]. Welding in the World,2007,51(1/2):31.
[10]
Ma Z T,Peisker D,Janke D. Grain refining of structural steels by dispersion of fine oxide particles[J]. Steel Research,1999,70(4/5):178.
[11]
姚浩,任强,张立峰. 低合金高强钢中针状铁素体控制的综述[J]. 炼钢,2022,38(2):1.
[12]
李秋平. 利用可控夹杂物诱发晶内铁素体析出机理[D]. 唐山:华北理工大学,2021.
[13]
王德永,屈天鹏. 镁洁净钢新技术发展与展望[J]. 炼钢,2020,36(5):1.
[14]
Katoh K. Investigation of non-metallic inclusion in mild steel weld metals[J]. WDOC-A,1965(65):158.
[15]
WEN B,SONG B. In situ observation of the evolution of intragranular acicular ferrite at Mg-containing inclusions in 16Mn steel[J]. Journal for Manufacturing Science and Production,2013,13(1/2):61.
GAO X Z,YANG S F,LI J S,et al. Addition of MgO nanoparticles to carbon structural steel and the effect on inclusion characteristics and microstructure[J]. Metallurgical and Materials Transactions B,2016,47(2):1124.
[18]
GAO X Z,YANG S F,LI J S,et al. Effects of MgO nanoparticle additions on the structure and mechanical properties of continuously cast steel billets[J]. Metallurgy and Materials Trading A-Physical Metallurgy and Materials Science,2016,47A(1):461.
[19]
GAO X Z,YANG S F,LI J S,et al. Inclusion characteristics and microstructure properties under different cooling conditions in steel with nanoparticles addition[J]. Ironmaking and Steelmaking,2018,45(7):611.
[20]
GUO H,YANG S F,ZHANG Y L,et al. Effect of surface-modified MgO nanoparticles on intragranular ferrite nucleated on inclusions in low-alloy steel[J]. Materials and Design,2019,182:108004.
[21]
YUAN H L,YANG S F,LI J S,et al. Optimising inclusion and toughening the heat-affected zone of ship plate steel with MgO nanoparticles[J]. Materials Science and Technology,2020,36(14):1574.
[22]
ZHOU Y T,YANG S,LI J S,et al. Effects of heat-treatment temperature on the microstructure and mechanical properties of Steel by MgO nanoparticle additions[J]. Materials,2018,11(9):1707.
[23]
GUO H,YANG S F,WANG T T,et al. Microstructure evolution and acicular ferrite nucleation in inclusion-engineered steel with modified MgO@C nanoparticle addition[J]. Journal of Materials Science and Technology,2022,99:277.
Humenik Jr M,Kingery W D. Metal-ceramic interactions:III,surface tension and wettability of metal-ceramic systems[J]. Journal of the American Ceramic Society,1954,37(1):18.
[28]
WANG Y,LI H,GUO L F,et al. Direct numerical simulation of inclusion cluster floating behavior in molten steel using lattice Boltzmann method[J]. Steel Research International,2015,86(7):732.
Kiviö M,Holappa L,Iung T. Addition of dispersoid titanium oxide inclusions in steel and their influence on grain refinement[J]. Metallurgical and Materials Transactions B,2010,41(6):1194.
[31]
Kiviö M,Holappa L. Addition of titanium oxide inclusions into liquid steel to control nonmetallic inclusions[J]. Metallurgical and Materials Transactions B,2012,43(2):233.
[32]
LI Y,ZHI W J,LI W J,et al. Preparation of ultra-fine MgO·Al2O3 spinel powder and its metallurgy behavior in medium carbon steel[J]. Advanced Materials Research,2009,79:111.
Amondarain Z,Arribas M,Arana J L,et al. Mechanical properties and phases derived from TiO2 nanopowder inoculation in low carbon steel matrix[J]. Materials Transactions,2013,54(10):1876.
[35]
Hasegawa M,Takeshita K. Strengthening of steel by the method of spraying oxide particles into molten steel stream[J]. Metallurgical Transactions B,1978,9(3):383.
[36]
刘操. 添加纳米氧化物细化X80管线钢组织的研究[D]. 沈阳:沈阳大学,2012.
[37]
LIU Y,HE C L,MA Q H,et al. Effect of nano CaO and MgO addition on the inclusions composition in the cast microstructure of X80 pipeline steel[J]. Applied Mechanics and Materials,2013,395/396:289.
[38]
WANG J M,LIU Y,LIU Y,et al. Effect of nanometer magnesium oxide addition on the cast microstructure of X80 pipeline steel[J]. Applied Mechanics and Materials,2013,401/402/403:610.
[39]
Hoffmann J,Rieth M,Lindau R,et al. Investigation on different oxides as candidates for nano-sized ODS particles in reduced-activation ferritic (RAF) steels[J]. Journal of Nuclear Materials,2013,442(1/2/3):444.
[40]
GUO H,Y ANG S F,LI J S,et al. Effects of surface-modified MgO nanoparticles on inclusion characteristics and microstructure in carbon structural steel[J]. JOM,2018,70(7):1136.
[41]
XU C,ZHANG M Y,LI J L,et al. The effect of MgTiO3 adding on inclusion characteristics[J]. Mater,2019,38:576.
[42]
DAI L,LIU Z,YU L M,et al. Microstructural characterization of Mg-Al-O rich nanophase strengthened Fe-Cr alloys[J]. Materials Science and Engineering A,2020,771:138664.
YU Z,LIU C J. Evolution mechanism of inclusions in medium-manganese steel by Mg treatment with different aluminum contents[J]. Metallurgical and Materials Transaction B,2019,50B:772.
[48]
LI Y D,XING W W,LI X B,et al. Effect of Mg addition on the microstructure and properties of a heat-affected zone in submerged arc welding of an Al-killed low carbon steel[J]. Materials,2021,14(9):2445
[49]
XIAO Y Y,WANG G C,LEI H,et al. Formation pathways for MgO·Al2O3 inclusions in iron melt[J]. Journal of Alloys and Compounds,2020,813:152243.
[50]
Harada A,Miyano G,Maruoka N,et al. Dissolution behavior of Mg from MgO into molten steel deoxidized by Al[J]. ISIJ,2014,54:2230.
CAO L,WANG G,YUAN X H,et al. Thermodynamics and agglomeration behavior on spinel inclusion in Al-deoxidized steel coupling with Mg treatment[J]. Metals,2019,9(8):900.
[53]
WANG Y,ZHU L G,HUO J X,et al. Relationship between crystallographic structure of complex inclusions MgO·Al2O3/Ti2O3/MnS and improved toughness of heat-affected zone in shipbuilding steel[J]. International Journal of Steel Research,2022,29:1277.
ZHANG T S,WANG D Y,LIU C W,et al. Inclusion modification with Mg treatment for 35CrNi3MoV steel[J]. Journal of Materials Science and Technology,1998,14(1):53.
Kojiama A,Kiyose A,Uemori R,et al. Super high HAZ toughness technology with fine microstructure imparted by fine particles[J]. Nippon Steel Technical Research,2004,90(20):2.
[60]
ZHU K,YANG Z. Effect of magnesium on the austenite grain growth of the heat-affected zone in low-carbon high-strength steels[J]. Metallurgical and Materials Transactions A,2011,42(8):2207.
[61]
LI X B,ZHANG T S,MIN Y, et al. Effect of magnesium addition in low-carbon steel part 1:Behaviour of austenite grain growth[J]. Ironmaking and Steelmaking,2019,46(3):292.
[62]
WANG J M,LIU Y,LIU Y, et al. Effect of nanometer magnesium oxide addition on the cast microstructure of X80 pipe line steel[J]. Frontiers of Manufacturing Science and Measuring Technology III,PTS 1-32013,401:610.
YANG Y H,WANG M Q,CHEN J C,et al. Microstructure and mechanical properties of gear steels after high temperature carburization[J]. Journal of Iron and Steel Research International,2013,20(12):140.
[66]
姜浩. 外加纳米氧化物对X80管线钢腐蚀性能的影响[D]. 沈阳:沈阳大学,2016.
[67]
Katoh K. Investigation of non-metallic inclusion in mild steel weld metals[J]. WDOC-A,1965(65):158.
[68]
Zhang Z,Farrar R A. Role of non-metallic inclusions in formation of acicular ferrite in low alloy weld metals[J]. Materials Science and Technology,1996,12(3):237.
[69]
Loder D,Michelic S K,Mayerhofer A,et al. On the capability of nonmetallic inclusions to act as nuclei for acicular ferrite in different steel grades[J]. Metallurgical and Materials Transactions B,2017,48(4):1992.
LIN C K,PAN Y C,SU Y H F,et al. Effects of Mg-Al-O-Mn-S inclusion on the nucleation of acicular ferrite in magnesium-containing low-carbon steel[J]. Material Properties,2018,141:318.
[72]
LI Y,XING W,LI X,et al. Effect of Mg addition on the microstructure and properties of a heat-affected zone in submerged arc welding of an Al-killed low carbon steel[J]. Materials,2021,14(9):2445.
[73]
Tsutsumi M,Kato H,Koseki T,et al. Investigation of factors affecting ferrite transformation from steel-oxide interface[C]//ASM Proceedings of the International Conference:Trends in Welding Research. Pine Mountain,GA,United States:[s.n.],2005:987.
[74]
Shin S Y,Oh K,Kang K B,et al. Improvement of charpy impact properties in heat affected zones of API X80 pipeline steels containing complex oxides[J]. Materials science and technology,2010,26(9):1049.
[75]
HUANG Q,WANG X,JIANG M,et al. Effects of Ti-Al complex deoxidization inclusions on nucleation of intragranular acicular ferrite in C-Mn steel[J]. Steel Research International,2016,87(4):445.
[76]
Van Der Eijk C,Grong Ø,Haakonsen F,et al. Progress in the development and use of grain refiner based on cerium sulfide or titanium compound for carbon steel[J]. ISIJ International,2009,49(7):1046.
[77]
WU X,WU S,YAN C,et al. Investigation of inclusion characteristics and intragranular acicular ferrite nucleation in Mg-containing low-carbon steel[J]. Metallurgical and Materials Transactions B,2021,52(2):1012.
[78]
Christian J W. In Physical Metallurgy[M]. Amsterdam:North Holland Publishing Company,1977.
[79]
Barbaro F J,Krauklis P,Easterling K E. Formation of acicular ferrite at oxide particles in steels[J]. Materials Science and Technology,1989,5(11):1057.
[80]
张立峰. 钢中非金属夹杂物[M]. 北京:冶金工业出版社,2019.
[81]
Porter D A,Easterling K E. Phase Transformation in Metals and Alloys[M]. London:Van Nostrand Reinhold,1981.
[82]
Bramfitt B. The effect of carbide and nitride additions on the heterogeneous nucleation behavior of liquid iron[J]. Metallurgical Transactions,1970,1(7):1987.
[83]
PAN N,SONG B,ZHAI Q J,et al. Lattice disregistry and empirical electron theory study on the heterogeneous nucleation catalysis of liquid steel[J]. Journal of the Chinese Rare Earth Society,2010,28:125.
WANG L,SONG B,MAO J H,et al. Effect of Mg, La and Ca addition order on inclusions and microstructure of Ti-bearing C-Mn steel[J]. Ironmaking and Steelmaking,2022,49(2):318.
[86]
QIU F,LIU T,ZHANG X,et al. Application of nanoparticles in cast steel:An overview[J]. China Foundry,2020,17(2):111.
[87]
Suzuki T,Inoue J,Koseki T. Solidification of iron and steel on single-crystal oxide[J]. ISIJ International,2007,47(6):847.
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