Influence of Ca treatment on application of rare earth in HAZ during high heat input welding progress
XIE Yu-min1,2, SONG Ming-ming1,2, MEN Chao-qi1,3, ZHU Hang-yu1,2, MA Guo-jun1,2, XUE Zheng-liang1,3
1. Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China; 2. Hubei Provincial Engineering Technology Research Center of Metallurgical Secondary Resources, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China; 3. Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
Abstract：To make clear the influence of Ca treatment on the effect of Rare Earth (RE) to improve the toughness of Heat Affected Zone (HAZ) in C-Mn steel,Gleeble was used to simulate the welding thermal cycle process with a heat input of 339 kJ/cm. The differences in inclusion,microstructure and low-temperature impact toughness in HAZ between RE treated steel and Ca-RE treated steel were compared. At last,the influence of Ca on the role of RE in HAZ was studied. It was found that Ca can promote the function of RE to improve the low temperature impact toughness in HAZ. The inclusions in HAZ of RE treated steel transformed from complex inclusions containing RExOy to that of RE and Ca when treated with Ca,thereby decreasing the total amount of inclusions. Ca treatment also resulted in the increase in the mean size of the inclusions from 1.5 to 2.2 μm,while a decrease in the aspect ratio from 1.5 to 1.4. Although Ca had little effect on the content of acicular ferrite in HAZ of RE-treated steel,however,the inhibition of RE on prior austenite grain coarsening in HAZ was enhanced by Ca treatment,with a smaller grain size than that of the RE treated steel. The low-temperature impact toughness in HAZ of RE treated steel was obviously improved by Ca treatment When the heat input was 339 kJ/cm.
谢毓敏, 宋明明, 门超奇, 朱航宇, 马国军, 薛正良. 钙处理对稀土在大线能量焊接HAZ中作用的影响[J]. 钢铁, 2021, 56(3): 146-153.
XIE Yu-min, SONG Ming-ming, MEN Chao-qi, ZHU Hang-yu, MA Guo-jun, XUE Zheng-liang. Influence of Ca treatment on application of rare earth in HAZ during high heat input welding progress[J]. Iron and Steel, 2021, 56(3): 146-153.
[1] 廖建国. 大线能量焊接用厚板钢的发展[J]. 宽厚板,2002,8(2):44. (LIAO Jian-guo. Development in structural steel plates for high-heat input welding[J]. Wide and Heavy Plate,2002,8(2):44.) [2] Ashari R,Eslami A,Shamanian M,et al. Effect of weld heat input on corrosion of dissimilar welded pipeline steels under simulated coating disbondment protected by cathodic protection[J]. Journal of Materials Research and Technology,2020,9(2):2136. [3] 邹宗园,韩舒婷,李银潇,等. 大线能量焊接用钢CGHAZ冲击韧性内在机理分析[J]. 中国冶金,2019,29(1):18. (ZOU Zong-yuan,HAN Shu-ting,LI Yin-xiao,et al. Analysis of internal mechanism of impact toughness of CGHAZ for high heat input welding steels[J]. China Metallurgy,2019,29(1):18.) [4] YANG J,ZHU K,WANG R Z,et al. Excellent heat affected zone toughness technology improved by strong deoxidizers[J]. Baosteel Technical Research,2010,4(4):32. [5] 杨才福,柴锋,苏航. 大线能量焊接船体钢的研究[J]. 上海金属,2010,32(1):1. (YANG Cai-fu,CHAI Feng,SU Hang. Study of ship hull steel for high heat input welding[J]. Shanghai Metals,2010,32(1):1.) [6] SHI M H,ZHANG P,WANG C,et al. Effect of high heat input on toughness and microstructure of coarse grain heat affected zone in Zr bearing low carbon steel[J]. ISIJ International,2014,54(4):932. [7] 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. [8] 李超,董廷亮,孔维明,等. Ti-Ca复合脱氧大线能量焊接用钢中夹杂物的演变[J]. 钢铁,2019,54(2):35. (LI Chao,DONG Ting-liang,KONG Wei-ming,et al. Evolution of inclusions in high heat input welding steel with Ti-Ca compound deoxygenation[J]. Iron and Steel,2019,54(2):35.) [9] 赵晶军,龙木军,汪勤政,等. 不同冷速下钛微合金化Q345B钢的HAZ组织及性能[J]. 中国冶金,2019,29(3):11. (ZHAO Jing-jun,LONG Mu-jun,WANG Qin-zheng,et al. Microstructure and properties of titanium microalloyed Q345B steel in heat affected zone at different cooling rates[J]. China Metallurgy,2019,29(3):11.) [10] 李小明,石磊,薛正良. GCr15轴承钢中Ti含量的控制[J]. 炼钢,2011,27(2):29. (LI Xiao-ming,SHI Lei,XUE Zheng-liang. Ti content control of GCr15 bearing steel[J]. Steelmaking,2011,27(2):29.) [11] 王忠亮,任慧平. 硅钢钢水中Ti含量影响因素分析[J]. 包钢科技,2019,45(2):33.(WANG Zhong-liang,REN Hui-ping. Analysis on influencing factors for Ti content in molten steel of silicon steel[J]. Science and Technology of Baotou Steel,2019,45(2):33.) [12] 薛正良,金武涛,雷家柳,等. 帘线钢生产中钛夹杂的析出与控制[J]. 炼钢,2016,32(4):23. (XUE Zheng-liang,JIN Wu-tao,LEI Jia-liu,et al. Precipitation and control of titanium inclusions in tire cord steel production[J]. Steelmaking,2016,32(4):23.) [13] LIU H L,LIU C J,JIANG M F. Effect of rare earths on impact toughness of a low-carbon steel[J]. Materials and Design,2012,33:306. [14] 宋明明,宋波,薛正良,等. 稀土处理钢中晶内铁素体的形成及其对性能的影响[J]. 炼钢,2017,33(5):24. (SONG Ming-ming,SONG Bo,XUE Zheng-liang,et al. Formation of intragranular ferrite and its effect on property of steel treated by rare earth[J]. Steelmaking,2017,33(5):24.) [15] SONG M M,SONG B,XIN W B,et al. Effects of rare earth addition on microstructure of C-Mn steel[J]. Ironmaking and Steelmaking,2015,42(8):594. [16] Adabavazeh Z,Hwang W S,Su Y H. Effect of adding cerium on microstructure and morphology of Ce-based inclusions formed in low-carbon steel[J]. Scientific Reports,2017,7:1. [17] Thewlis G. Effect of cerium sulphide particle dispersions on acicular ferrite microstructure development in steels[J]. Materials Science and Technology,2006,2(22):153. [18] CAO Y X,WAN X L,HOU Y H,et al. Comparative study on the effect of Y content on grain refinement in the simulated coarse-grained heat-affected zone of X70 pipeline steels[J]. Micron,2019,127:1. [19] XIN W B,SONG B,SONG M M,et al. Effect of cerium on characteristic of inclusions and grain boundary segregation of arsenic in iron melts[J]. Steel Research International,2015,86(12):1430. [20] 张圣华,宋波,宋明明,等. 钛稀土复合处理对C-Mn钢粗晶热影响区组织及韧性的影响[J]. 工程科学学报,2017,39(6):846. (ZHANG Sheng-hua,SONG Bo,SONG Ming-ming,et al. Influence of Ti-rare earth addition on microstructure and toughness of coarse grain heat-affected zone in C-Mn steel[J]. Chinese Journal of Engineering,2017,39(6):846.) [21] YAN N,YU S F,CHEN Y. In situ observation of austenite grain growth and transformation temperature in coarse grain heat affected zone of Ce-alloyed weld metal[J]. Journal of Rare Earths,2017,35(2):203. [22] 杨超云,庄权,刘航,等. 稀土变质高洁净轴承钢中夹杂物的行为分析[J]. 中国冶金,2020,30(9):45. (YANG Chao-yun,ZHUANG Quan,LIU Hang,et al. Analysis on modification behavior of rare earth to inclusions in highly clean bearing steel[J]. China Metallurgy,2020,30(9):45.) [23] He T Q,Wu K M,Anatolii T,et al. Effect of feeding Ca-Mg-RE-Zr composite cored wire during refining of liquid steel on abrasive wear resistance of high-strength steels[J]. Wear,2013,303:524. [24] LIU Y,XU B S,ZHU Z X,Et al. New pattern Zn-Al-Mg-RE coating technics for steel structure sustainable design[J]. Journal of Central South University of Technology:English Edition,2005,12(s2):211. [25] 刘建华,包燕平,王敏. X70管线钢钙处理研究[J]. 钢铁,2010,45(2):41. (LIU Jian-hua,BAO Yan-ping,WANG Min. Investigation of calcium treatment in X70 pipeline steel[J]. Iron and Steel,2010,45(2):41.) [26] 罗磊,孙彦辉,陈永,等. 钙处理工艺对管线钢非金属夹杂物的影响[J]. 钢铁,2013,48(1):42. (LUO Lei,SUN Yan-hui,CHEN Yong,et al. Effect of calcium treatment on the non-metallic inclusions of pipeline steel[J]. Iron and Steel,2013,48(1):42.) [27] 高胜亚,姜敏,侯泽旺,等. 钙处理对高碳铝镇静钢中夹杂物的影响[J]. 钢铁,2017,52(4):25. (GAO Sheng-ya,JIANG Min,HOU Ze-wang,et al. Effect of calciumtreatment on non-metallic inclusions in high carbon aluminum killed steel[J]. Iron and Steel,2017,52(4):25.) [28] Sardar M K,Mukhopadhyay S,Bandopadhyay B K,et al. Optimisation of inclusion chemistry by improved steel cleanliness and optimum calcium treatment[J]. Process Metallurgy-Steelmaking,2007,78(2):136. [29] 谢毓敏,宋明明,薛正良,等. 钙处理对稀土在C-Mn钢中作用的影响[J]. 钢铁,2020,55(11):30. (XIE Yu-min,SONG Ming-ming,XUE Zheng-liang,et al. Influence of Ca treatment on effect of rare earth in C-Mn steel[J]. Iron and Steel,2020,55(11):30.) [30] 卜勇,尹法章,胡本芙,等. 稀土和Ca、Mg元素对高强度钢焊接热影响区组织和韧性的影响[J]. 钢铁,2006,41(4):71. (BU Yong,YIN Fa-zhang,HU Ben-fu,et al. Effect of rare-earth metal,Ca and Mg on microstructure and toughness of heat affected zone of high heat-input welding[J]. Iron and Steel,2006,41(4):71.) [31] Rykalin N N,Uglov A A,Nizametdinov. Calculation of the heating of materials by laser radiation allowing for the temperature dependences of thermal properties[J]. Soviet Journal of Quantum Electronics,1977,7(7):853. [32] 中国钢铁工业协会. GB/T 229—2007 金属材料夏比摆锤冲击试验方法[S]. 北京:中国标准出版社,2007-11-23.(China Iron and Steel Association. GB/T 229—2007 Metallic Materials-Charpy Pendulum Impact Test Method[S]. Beijing:Standards Press of China,2007-11-23) [33] 中国钢铁工业协会. GB/T 6394—2017 金属平均晶粒度测定方法[S]. 北京:中国标准出版社,2017-02-28. (China Iron and Steel Association. GB/T 6394—2017 Determination of Estimating the Average Grain Size of Metal[S]. Beijing:Standards Press of China,2017-02-28.) [34] 马杰,刘芳. 稀土元素在钢中的作用及对钢性能的影响[J]. 钢铁研究,2009,37(3):54. (MA Jie,LIU Fang. Application of rare earth element in steel and its influence on steel properties[J]. Research on Iron and Steel,2009,37(3):54.)
2021, Vol. 56 
