The Cleanliness and Modification Behavior of Nonmetallic Inclusions in 0.05C-0.3Si-2.0Mn-xCe Molten Steel
WANG Xin1, YIN Shu-chun1, HE Lei1, WANG She-bin1,2
1. College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
2. Key Laboratory of Interface Science and Engineering in Advanced Materials(Ministry of Education), Taiyuan 030024, China
Abstract：In order to develop high-level pipeline steel refining technology, the industrial pure iron and some elements were melted by vacuum induction furnace at 800Pa in Ar atmosphere. and refining by adding Ce element at 1873K, the 0.05 C-0.3 Si-2.0Mn(mass fraction/%) of four different Ce contents were obtained. The cleanliness of 0.05C-0.3Si-2.0Mn-xCe series liquid steel, modification behavior of inclusion and its mechanism were analyzed and discussed. The results indicated that when [Ce] content was 0.0052%-0.0374%, with Ce content increasing, [O] and [S] reduced remarkably, reaching to 0.0008% and 0.0010% respectively. With Ce content increasing,the yield ratio, elongation and impact energy of steel first increase then decrease, reaching to 92.9%,24.3%,276J respectively. The reason is that the angular inclusions of SiO2-MnS, strip shape and large volume inclusion of MnS were changed into about 1μm, even nanometer scale spherical-shape inclusion of rare earth sulfur oxide.
王昕, 尹树春, 贺磊, 王社斌. 0.05C-0.3Si-2.0Mn-xCe系钢液的洁净度与夹杂物变性行为[J]. 材料工程, 2013, 0(3): 42-50.
WANG Xin, YIN Shu-chun, HE Lei, WANG She-bin. The Cleanliness and Modification Behavior of Nonmetallic Inclusions in 0.05C-0.3Si-2.0Mn-xCe Molten Steel. Journal of Materials Engineering, 2013, 0(3): 42-50.
[1] 石川信行,鹿内伸夫,近藤丈.超高強度高変形ラインパイプの開発[J]. JFE技報, 2007,17(8):26-30.[2] HUPER T,ENDO S,ISHIKAWA N,et al. Effect of volume fraction of constituent phases on the stress-strain relationship of dual phase steels[J]. ISIJ International,1999,39 (3):288-294.[3] TAKAHASHI A,OGAWA H. Influence of microhardness and inclusion on stress oriented hydrogen induced cracking of line pipe steels[J].ISIJ Int,1996,36(3):334-340.[4] 周民,衣海龙,杜林秀,等. X100管线钢中的异常偏析带分析[J]. 东北大学学报:自然科学版,2010,31(3):386-390.ZHOU Min,YI Hai-long,DU Lin-xiu, et al. Analysis of abnormal segregation band of X100 pipeline steel[J].Journal of Northeastern University( Natural Science),2010,31(3):386-390.[5] 沈卓,李玉海,单以银,等. 硫含量及显微组织对管线钢力学性能和抗H2Z行为的影响[J]. 金属学报,2008,44(2):215-221.SHEN Zhuo,LI Yu-hai,SHAN Yi-yin,et al. Influences of sulfur content and microstructure of pipeline steels on mechanical property and H2S-resistant behavior[J].Acta Metallurgica Sinica,2008,44(2):215-221.[6] 邓伟,高秀华,秦小梅,等.X80管线钢冲击断裂韧性行为[J]. 金属学报,2010,46(5):533-540.DENG Wei, GAO Xiu-hua, QIN Xiao-mei, et al.Impact fracture behavior of X80 pipeline steel[J].Acta Metallurgica Sinica,2010,46(5):533-540.[7] 张颖瑞,董超芳,李晓刚,等. 电化学充氢条件下X70管线钢及其焊缝的氢致开裂行为[J]. 金属学报, 2006,42(5):523-529.ZHANG Ying-rui, DONG Chao-fang,LI Xiao-gang, et al. Hydrogen induced cracking behaviors of X70 pipeline steel and its welds under electrochemical charging[J].Acta Metallurgica Sinica,2006,42(5):523-529.[8] 周成双,郑树启,陈长风,等. 合金元素偏聚夹杂对针状铁素体管线钢焊接热影响区氢鼓泡的影响[J]. 焊接学报,2006,31(6):7-10.ZHOU Cheng-shuang,ZHENG Shu-qi,CHEN Chang-feng, et al. Influence of cell segregation inclusion of alloying elements on initiation of hydrogen blistering in heat-affected zone of acicular ferrite steels[J].Transactions of the China Welding,2006,31(6):7-10.[9] 李太全,包燕平,吴华杰,等. 高级别管线钢超低硫控制研究[J]. 钢铁,2009,44(5):35-38.LI Tai-quan,BAO Yan-ping,WU Hua-jie, et al. Controlling of super-low sulfide of high grade pipeline steel[J]. Iron & Steel,2009,44(5):35-38.[10] 张静,于会香,王新华,等. 精炼渣成分对高强度低合金钢中非金属夹杂物影响[J]. 北京科技大学学报,2011,33(7):828-833. ZHANG Jing,YU Hui-xiang,WANG Xin-hua, et al.Effect of refining slag composition on non-metallic inclusions in high-strength low-alloy steel[J].Journal of University of Science and Technology Beijing,2011,33(7):828-833.[11] TAGUCHI K,NAKAZATO H,USUI T,et al.Complex deoxidation equilibria of molten iron by aluminum and calcium[J]. International,2005,45(11):1572-1576.[12] 王龙妹. 稀土元素在新一代高强韧钢中的作用和应用前景[J].中国稀土学报,2004, 22(1):48-50. WANG Long-mei.Application prospects and behavior of RE in new generation high strength steels with superior toughness[J].Journal of the Chinese Rare Earth Society,2004,22(1):48-50.[13] 回春华,李廷举,金文中. 40CrMnSi多元低合金钢的稀土净化研究[J].铸造,2008,57(1):12-14. HUI Chun-hua, LI Ting-ju, JIN Wen-zhong. Effect of varying rare-earth content on 40CrMnSi alloy steel[J].Foundry,2008,57(1):12-14.[14] 刘晓,杨吉春,高学忠. 稀土对2Cr13不锈钢夹杂物的变质及对冲击韧性的影响[J].北京科技大学学报,2010,32(5):605-609. LIU Xiao,YANG Ji-chun,GAO Xue-zhong. Effects of RE on the inclusions and impact toughness of 2Cr13 stainless steel[J].Journal of University of Science and Technology Beijing,2010,32(5):605-609.[15] 郭峰,李杰,李志,等. 单轴拉伸下AerMet100钢中稀土夹杂物开裂过程的原位观察[J].材料工程,2008,(12):21-29. GUO Feng,LI Jie,LI Zhi, et al. SEM in-situ observations to crack in rare-earth inclusions in AerMet100 steel under stretch tension[J].Journal of Materials Engineering,2008,(12):21-29.[16] 张辉,王建军,刘春明. Ce对00Cr17不锈钢及475℃脆性的影响[J].热处理学报,2010, 31(11):68-72. ZHANG Hui,WANG Jian-jun,LIU Chun-ming.Effect of Ce on impact toughness and 475 ℃ embrittlement of 00Cr17 stainless steel[J].Transa ctions of Materials and Heat Treatment,2010,31(11):68-72.[17] 文彬.铈和镁在氧化物冶金中应用的基础研究.北京:北京科技大学,2011.[18] 周青春,潘应君,吴新杰,等.混合稀土金属对9Cr2Mo钢组织和性能的影响[J].稀土,2007,28(6):66-70. ZHOU Qing-chun,PAN Ying-jun,WU Xin-jie, et al. Effect of mischmetall on microstructure and property of steel 9Cr2Mo[J].Chinese Rare Earths,2007,28(6):66-70.[19] 黄希祜. 钢铁冶金原理[M]. 3版. 北京: 冶金工业出版社,2002.46-47,438.[20] SHIRO B,MITSUTAKA H. Chemical Properties of Molten Slags[M]. Tokyo:The Iron and Steel Institute of Japan,1991.17-26.[21] 胡晓军,松浦宏行,月桥文孝,等. 界面非平衡氧传递过程动力学的解析[J] .金属学报,2007,43(8):829-833. HU Xiao-jun,MATSUURA Hiroyuki,TSUKIHASHI Fumitaka, et al. Kinetic analysis on non-eqtilibrium process of oxygen transfer at interface[J] .Acta Metallurgica Sinica,2007,43(8):829-833.[22] 高运明,宋建新,张业勤,等.利用电化学方法测定银液中氧的扩散系数[J] .金属学报,2010,46(3):227-281. GAO Yun-ming,SONG Jian-xin,ZHANG Ye-qin, et al. Messurement of the diffursivity of oxygen in high-temperature liquid sliver by electrochemical method[J]. Acta Metallurgica Sinica,2010,46(3):227-281.[23] 田琳,陈树江,张玲. 镁钙质耐火材料脱硫反应动力学研究[J] .耐火材料,2006,40(5):358-361. TIAN Lin,CHEN Shu-jiang, ZHANG Ling.Dynamic study on desulphurization reaction of MgO-CaO refractories[J].Refractories,2006,40(5):358-361.[24] 石井匠,藤沢清二,大森章夫. 超高層ビル向け建築構造用鋼材の概要と適用例[J].JFE技報,2008,18(8):1-6.[25] 龙鹄,成国光,吴彬,等. 含Ce2O3精炼渣熔化及流动特性的研究[J] .中国稀土学报,2010,28(12):721-727. LONG Hu,CHENG Guo-guang,WU Bin, et al. Melting and fluidity properties of refining slag containing Ce2O3 for steelmaking[J].Journal of the Chinese Rare Earth Society,2010,28(12):721-727.
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