镁处理低碳钢中MgAl<sub>2</sub>O<sub>4</sub>夹杂物的聚集行为

doi:10.13228/j.boyuan.issn0449-749x.20200207

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (7799 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要为了研究MgAl₂O₄夹杂物的聚集行为,通过金相试样法和有机溶液电解分离法结合场发射扫描电子显微镜对镁处理铝脱氧低碳钢中单颗MgAl₂O₄夹杂物、多粒子MgAl₂O₄夹杂物进行观察。热力学计算结果表明,MgAl₂O₄夹杂物在液相中析出。FactSage计算得到钢中夹杂物相变规律,夹杂物预测种类与试验观察结果一致。对多粒子MgAl₂O₄夹杂物进行分析,发现腔桥力远远大于毛细管作用力、范德瓦尔斯力、黏滞力。因此,腔桥力是诱导MgAl₂O₄夹杂物发生聚集的主要作用力。钢液条件为温度升高、低a_O(氧活度)、低w([S])时,腔桥力数值较小,引起MgAl₂O₄夹杂物的聚集能力最弱。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	曹磊
	金朋亮
	肖远悠
	尚德礼
	刘春伟
	王国承

关键词 ：镁处理, 低碳钢, 夹杂物, 热力学, 聚集行为

Abstract：In order to study the aggregation behavior of MgAl₂O₄ inclusions, single MgAl₂O₄ inclusions, and multi-particle MgAl₂O₄ inclusions in magnesium-treated aluminum deoxidized low carbon steel were observed by metallographic sample method and organic solution electrolytic separation method combined with field emission scanning electron microscope. Thermodynamic calculation results indicate that MgAl₂O₄ inclusions are precipitated in the liquid phase. The phase transformation law of inclusions in steel was calculated by FactSage, and the predicted types of inclusions were consistent with the experimental observations. The analysis of the multi-particle MgAl₂O₄ inclusions shows that the cavity bridge force is much greater than the capillary force, van der Waals force, and viscous force. Therefore, the cavity bridge force is the main force that causes the aggregation of MgAl₂O₄ inclusions. When the molten steel condition is that increasing temperature, low a_O(oxygen activity), and low w([S]), the cavity bridge force value is small, which causes the weakest aggregation ability of MgAl₂O₄ inclusions.

Key words： magnesium treatment low carbon steel inclusion thermodynamics aggregation behavior

收稿日期: 2020-04-17

引用本文:

曹磊, 金朋亮, 肖远悠, 尚德礼, 刘春伟, 王国承. 镁处理低碳钢中MgAl₂O₄夹杂物的聚集行为[J]. 钢铁, 2020, 55(11): 37-46. CAO Lei, JIN Peng-liang, XIAO Yuan-you, SHANG De-li, LIU Chun-wei, WANG Guo-cheng. Aggregation behavior of MgAl₂O₄ inclusions in magnesium-treated low carbon steel[J]. Iron and Steel, 2020, 55(11): 37-46.

链接本文:

http://www.chinamet.cn/Jweb_gt/CN/10.13228/j.boyuan.issn0449-749x.20200207 或 http://www.chinamet.cn/Jweb_gt/CN/Y2020/V55/I11/37

[1] 王琳珠, 李军旗, 杨树峰, 等. 高铝钢中钙处理对非金属夹杂物特征的影响[J]. 钢铁, 2019, 54(11): 27.(WANG Lin-zhu, LI Jun-qi, YANG Shu-feng, et al. Effect of calcium treatment on characteristics of non-metallic inclusions in steel containing high Al[J]. Iron and Steel, 2019, 54(11): 27.)
[2] 李强, 赵家七, 蔡小锋, 等. 管线钢钙处理工艺优化[J]. 炼钢, 2019, 35(5): 37.(LI Qiang, ZHAO Jia-qi, CAI Xiao-feng, et al. Optimization of calcium treatment process for pipeline steel[J]. Steelmaking, 2019, 35(5): 37.)
[3] 卢军辉, 吴战芳, 李忠义, 等. 钙处理对耐候钢低温韧性和耐腐蚀性能的影响[J]. 中国冶金, 2020, 30(1): 44.(LU Jun-hui, WU Zhan-fang, LI Zhong-yi, et al. Effect of calcium treatment on low temperature impact toughness and corrosion resistance of weathering steel[J]. China Metallurgy, 2020, 30(1): 44.)
[4] 朱诚意, 黄罗冀, 罗小燕, 等. 钙处理对成品无取向硅钢夹杂物特性的影响[J]. 钢铁研究学报, 2020, 33(2): 117.(ZHU Cheng-yi, HUANG Luo-ji, LUO Xiao-yao, et al. Effect of calcium treatment on characteristics of inclusions in finished non-oriented silicon steel[J]. Journal of Iron and Steel Research, 2020, 33(2): 117.)
[5] MA W, BAO Y, WANG M, et al. Effect of Mg and Ca treatment on behavior and particle size of inclusions in bearing steels[J]. ISIJ International, 2014, 54(3): 536.
[6] WANG L, YANG S, LI J, et al. Effect of Mg addition on the refinement and homogenized distribution of inclusions in steel with different Al contents[J]. Metallurgical and Materials Transactions B, 2017, 48(2): 805.
[7] ZOU X, ZHAO D, SUN J, et al. An integrated study on the evolution of inclusions in EH36 shipbuilding steel with Mg addition: from casting to welding[J]. Metallurgical and Materials Transactions B,2018, 49(2): 481.
[8] 王德永, 徐周, 屈天鹏. 镁处理对低碳微合金钢中夹杂物和凝固组织的影响[J]. 炼钢, 2017, 33(5): 12.(WANG De-yong, XU Zhou, QU Tian-peng. Effect of Mg addition on inclusions and solidification structure in low carbon microalloy steels[J]. Steelmaking, 2017, 33(5): 12.)
[9] 田俊, 王德永, 屈天鹏, 等. 钙、镁在含硫钢中硫化物变性过程中的作用[J]. 钢铁, 2017, 52(11): 27.(TIAN Jun, WANG De-yong, QU Tian-peng, et al. Role and distinction of Ca and Mg to sulfide modification for sulfur steel[J]. Iron and Steel, 2017, 52(11): 27.)
[10] ZHANG T, LIU C, JIANG M. Effect of Mg on behavior and particle size of inclusions in Al-Ti deoxidized molten steels[J]. Metallurgical and Materials Transactions B, 2016, 47(4):2253.
[11] 李太全, 包燕平, 刘建华, 等. 镁对X120管线钢夹杂物的作用[J]. 钢铁, 2008, 43(11): 45.(LI Tai-quan, BAO Yan-ping, LIU Jian-hua, et al. Effect of magnesium on morphology of non-metallic inclusions in X120 pipeline steel[J]. Iron and Steel, 2008, 43(11): 45.)
[12] 黄宇, 谢有, 成国光, 等. H13钢中Mg-Al-O系夹杂物的形成机理及控制[J]. 钢铁, 2017, 52(6): 34.(HUANG Yu, XIE You, CHENG Guo-guang, et al. Formation mechanism and control of Mg-Al-O inclusions in H13 steel[J]. Iron and Steel, 2017, 52(6): 34.)
[13] 张庆松, 闵义, 许海生, 等. 硅镇静钢镁处理后夹杂物的生成及演变行为[J]. 钢铁, 2019, 54(4): 37.(ZHANG Qing-song, MIN Yi, XU Hai-sheng, et al. Effect of magnesium treatment on formation and evolution of inclusion in Si-Mn deoxidized steel[J]. Iron and Steel, 2019, 54(4): 37.)
[14] Kimura S, Nakajima K, Mizoguchi S. Behavior of alumina-magnesia complex inclusions and magnesia inclusions on the surface of molten low-carbon steels[J]. Metallurgical and Materials Transactions B, 2001, 32(1): 79.
[15] DU G, LI J, WANG Z B, et al. Effect of magnesium addition on behavior of collision and agglomeration between solid inclusion particles on H13 steel melts[J]. Steel Research International, 2017, 88(3): 1600185.
[16] 张同生, 王德永, 张永启, 等. 铝, 镁脱氧钢中夹杂物的动态演变规律[J]. 东北大学学报(自然科学版), 2014, 35(9): 1270.(ZHANG Tong-sheng, WANG De-yong, ZHANG Yong-qi, et al. Dynamic evolution of inclusions in Al-Mg deoxidation melts[J]. Journal of Northeastern University(Natural Science), 2014, 35(9): 1270.)
[17] WANG H, LI J, SHI C B, et al. Evolution of Al₂O₃ inclusions by magnesium treatment in H13 hot work die steel[J]. Ironmaking and Steelmaking, 2017, 44(2): 128.
[18] CAO L, WANG G, YUAN X, et al. Thermodynamics and agglomeration behavior on spinel inclusion in Al-deoxidized steel coupling with Mg treatment[J]. Metals, 2019(9): 900.
[19] Sasai K. Interaction between alumina inclusions in molten steel due to cavity bridge force[J]. ISIJ International, 2016, 56(6): 1013.
[20] WANG G, LI S, AI X, et al. Characterization and thermodynamics of Al₂O₃-MnO-SiO₂ (-MnS) inclusion formation in carbon steel billet[J]. Journal of Iron and Steel Research, International, 2015, 22(7): 566.
[21] CHEN P, ZHU C, LI G, et al. Effect of sulphur concentration on precipitation behaviors of MnS-containing inclusions in GCr15 bearing steels after LF refining[J]. ISIJ International, 2017, 57(6): 1019.
[22] Bi Y, Karasev A V, Jonsson P G. Evolution of different inclusions during ladle treatment and continuous casting of stainless steel[J]. ISIJ International, 2013, 53(12): 2099.
[23] Park J H, Lee S B, Gaye H R. Thermodynamics of the formation of MgO-Al₂O₃-TiO_x inclusions in Ti-stabilized 11Cr ferritic stainless steel[J]. Metallurgical and Materials Transactions B, 2008, 39(6): 853.
[24] 宋宇, 李光强, 杨光. Al-Ti-Mg复合脱氧对钢中夹杂物及组织的影响[J]. 北京科技大学学报, 2011, 33(10): 1214.(SONG Yu, LI Guang-qiang, YANG Guang. Influence of Al-Ti-Mg complex deoxidation on the inclusions and microstructure of steel[J]. Journal of University of Science and Technology Beijing, 2011, 33(10): 1214.)
[25] WEN B, SONG B, PAN N, et al. Effect of SiMg alloy on inclusions and microstructures of 16Mn steel[J]. Ironmaking and Steelmaking, 2011, 38(8): 577.
[26] 徐周, 王德永, 陈开来, 等. 微镁处理对车轮钢组织与性能的调控作用[J]. 钢铁研究学报, 2018, 30(8): 633.(XU Zhou, WANG De-yong, CHEN Kai-lai, et al. Effect of magnesium addition on microstructure and mechanical properties in wheel steel[J]. Journal of Iron and Steel Research, 2018, 30(8): 633.)
[27] ZHU L, WANG Y, WANG S, et al. Research of microalloy elements to induce intragranular acicular ferrite in shipbuilding steel[J]. Ironmaking and Steelmaking, 2019, 46(6): 499.
[28] WU Z, ZHENG W, LI G, et al. Effect of inclusions' behavior on the microstructure in Al-Ti deoxidized and magnesium-treated steel with different aluminum contents[J]. Metallurgical and Materials Transactions B, 2015, 46(3): 1226.
[29] WANG L, LI J, NING B, et al. Effects of magnesium on wear resistance of H13 steel[J]. Materials Transactions, 2014, 55(7): 1104.
[30] SONG M M, HU C L, SONG B, et al. Effect of Ti-Mg treatment on the impact toughness of heat affected zone in 0.15%C-1.31%Mn steel[J]. Steel Research International, 2018, 89(3): 1700355.
[31] Yin H, Shibata H, Emi T, et al. "In-situ" observation of collision, agglomeration and cluster formation of alumina inclusion particles on steel melts[J]. ISIJ International,1997, 37(10): 936.
[32] Yin H, Shibata H, Emi T, et al. Characteristics of agglomeration of various inclusion particles on molten steel surface[J]. ISIJ International, 1997, 37(10): 946.
[33] Shibata H, Yin H, Yoshinaga S, et al. In-situ observation of engulfment and pushing of nonmetallic inclusions in steel melt by advancing melt/solid interface[J]. ISIJ International, 1998, 38(2): 149.
[34] Fang C M, Parker S C, De W G. Atomistic simulation of the surface energy of spinel MgAl₂O₄[J]. Journal of the American Ceramic Society, 2000, 83(8): 2082.
[35] Kimura S, Nabeshima Y, Nakajima K, et al. Behavior of nonmetallic inclusions in front of the solid-liquid interface in low-carbon steels[J]. Metallurgical and Materials Transactions B, 2000, 31(5): 1013.
[36] Shead L L, Zinkle S J, White D P. Thermal conductivity degradation of ceramic materials due to low temperature, low dose neutron irradiation[J]. Journal of Nuclear Materials, 2005, 340(2/3): 187.
[37] Johnson J L, German M R. Solid-state contributions to densifification during liquid-phase sintering[J]. Metallurgical and Materials Transactions B, 1996, 27(6): 901.