碲处理对15-5PH钢中硫化物夹杂改性的作用

doi:10.13228/j.boyuan.issn0449-749x.20210513

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Abstract 15-5PH precipitation-hardened stainless steel has excellent machining properties,which can be affected by inclusions in steel significantly. Long strip sulfide inclusions often lead to obvious anisotropy in mechanical properties due to the decrease of transverse performances for sulfur-containing steel during machining,which leads to material fracture failure. In order to investigate the effects of tellurium treatment on morphology,size and aspect ratio of sulfide in 15-5PH steel, high temperature test, SEM-EDS and statistical method were used in the test,and the mechanism of tellurium control on the morphology of manganese sulfide inclusions was discussed. The results show that sulfide of long strip and chain typeⅡin steel are modified into spherical MnS-MnTe and (Al-Si-O)-MnS-MnTe complex inclusions by tellurium treatment. The morphology and distribution of tellurium sulfide inclusions in steel were greatly changed. The aspect ratio of inclusions in steel decreased from 1.83 to 1.49,spheroidization rate was significantly increased,and the modification effect was obvious. When w([Te])/w([S]) in steel was 1.42,the inclusions had lower aspect ratio and smaller size, and the modification effect was the best. When w([Te])/w([S]) in steel was 2.32,large inclusions with high tellurium phase and sulfide embedded in telluride were found in the steel,and the average size of inclusions increased while the modification effect decreased. It indicates that there is an optimal amount of inclusion in tellurium treated steel,and high tellurium sulfide ratio exceeds the certain amount can not further improve the spheroidization rate. The addition of tellurium can significantly spherize sulfide inclusions in steel,reduce the aspect ratio of inclusions, improve the transverse performance and the cutting performance of steel. It can provide more application scenarios and possibilities for sulfide modification in steel,and provide certain reference for field process formulation.

Key words： tellurium treatment MnS inclusions 15-5PH steel sulfide inclusions precipitation-hardening stainless steel

Received: 27 August 2021

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	Articles by authors
	CHE Zhi-chao
	LIU Wei
	YANG Shu-feng
	LI Jing-she
	LIU Chao
	YUAN Hao

Cite this article:

CHE Zhi-chao,LIU Wei,YANG Shu-feng等. Modification of sulfide inclusions in 15-5PH steel by tellurium treatment[J]. Iron and Steel, 2022, 57(3): 36-43.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20210513 OR http://www.chinamet.cn/Jweb_gt/EN/Y2022/V57/I3/36

[1] 农晓东. 增材制造15-5PH不锈钢的组织与力学性能研究[D]. 北京:北京科技大学,2021.(NONG Xiao-dong. Investigation of Microstructure and Mechanical Properties of 15-5PH Stainless Steel Produced by Additive Manufacturing[D]. Beijing:University of Science and Technology Beijing,2021.)
[2] 管真. 不同冶炼方法的15-5PH不锈钢中夹杂物对疲劳性能的影响[D]. 昆明:昆明理工大学,2019.(GUAN Zhen. Effect of Inclusions on Fatigue Properties of 15-5PH Stainless Steel with Different Smelting Methods[D]. Kunming:Kunming University of Science and Technology,2019.)
[3] ZHANG X F,LU W J,QIN R S. Morphology and distribution control of MnS inclusions in molten steel by electropuls-ing[J]. Materials Research Innovations,2014,18(s4):S4-244.
[4] 王占花,惠卫军,张永健,等. 硫化物形貌对非调质钢力学性能各向异性的影响[J]. 钢铁研究学报,2019,31(3):327.(WANG Zhan-hua,HUI Wei-jun,ZHANG Yong-jian,et al. Effect of sulfide morphology on anisotropic mechanical properties of microalloyed forging steel[J]. Journal of Iron and Steel Research,2019,31(3):327.)
[5] GUO Y T,HE S P,CHEN G J,et al. Thermodynamics of complex sulfide inclusion formation in Ca-treated Al-killed structural steel[J]. Metallurgical and Materials Transactions B,2016,47(4):2549.
[6] Du H,Karasev A,Sundqvist O,et al. Modification of non-metallic inclusions in stainless steel by addition of CaSi[J]. Metals,2019,9(1):74.
[7] ZHANG X,ZHANG L,YANG W,et al. Characterization of the three-dimensional morphology and formation mechanism of inclusions in linepipe steels[J]. Metallurgical and Materials Transactions B,2017,48(1):701.
[8] ZHANG T S,WANG D Y,JIANG M F. Effect of magnesium on evolution of oxide and sulphide in liquid iron at 1 873 K[J]. Journal of Iron and Steel Research International,2014,21(12):1073.
[9] 吴翔宇,何玉东,吴良平,等. 镁改质对Y1Cr13易切削不锈钢中硫化物的影响[J]. 钢铁,2020,55(4):68.(WU Xiang-yu,HE Yu-dong,WU Liang-ping,et al. Effect of magnesiun modification on sulfides in Y1Cr13 free-cutting stainless steel[J]. Iron and Steel,2020,55(4):68.)
[10] 杨健,蔡文菁. 镁处理对钢中夹杂物以及HAZ组织和性能的影响[J]. 钢铁,2021,56(7):13.(YANG Jian,CAI Wen-jing. Effect of magnesium treatment on inclusions and HAZ microstructure and properties of steel plate[J]. Iron and Steel,2021,56(7):13.)
[11] FU J,YU Y,WANG A,et al. Inclusion modification with Mg treatment for 35CrNi3MoV steel[J]. Journal of Materials Science & Technology,1998,14(1):53.
[12] 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.
[13] 习小军,杨树峰,李京社,等. 含铈304不锈钢夹杂物改性及耐腐蚀性能优化[J]. 钢铁,2020,55(1):20.(XI Xiao-jun,YANG Shu-feng,LI Jing-she,et al. Inclusion modification and corrosion resistance optimization of 304 stainless steel containing cerium[J]. Iron and Steel,2020,55(1):20.)
[14] SHEN P,FU J. Morphology study on inclusion modifications using Mg-Ca treatment in resulfurized special steel[J]. Materials,2019,12(2):197.
[15] 刘威,杨树峰,李京社,等. 钙镁复合处理20CrMnTi钢中硫化物夹杂[J]. 钢铁,2017,52(12):21.(LIU Wei,YANG Shu-feng,LI Jing-she,et al. Modification of sulphide inclusions in 20CrMnTi steel by calcium-magnesium treatment[J]. Iron and Steel,2017,52(12):21.)
[16] 邹虎,王东兴,陈永峰,等. 低碳含碲硫易切削钢的研究与实践[J]. 中国冶金,2020,30(12):77.(ZOU Hu,WANG Dong-xing,CHEN Yong-feng,et al. Research and practice of low carbon free-cutting steel containing tellurium and sulfur[J]. China Metallurgy,2020,30(12):77.)
[17] Yaguchi H,Onodera N. The effect of tellurium on the machinability of AISI 12L14+Te steel[J]. Transactions of the Iron and Steel Institute of Japan,2006,28(12):1051.
[18] Costa E,Luiz N,Silva M D,et al. Influence of tellurium addition on drilling of microalloyed steel (DIN 38MnS6)[J]. Industrial Lubrication and Tribology,2011,63(6):420.
[19] SHEN P,YANG Q K,ZHANG D,et al. Application of tellurium in free-cutting steels[J]. Journal of Iron and Steel Research International,2018,25(8):787.
[20] Zheng L,Malfliet A,Wollants P,et al. Effect of surfactant Te on the formation of MnS inclusions in steel[J]. Metallurgical and Materials Transactions B,2017,48(5):2447.
[21] PING S,QIANKUN Y,DONG Z,et al. The effect of tellurium on the formation of MnTe-MnS composite inclusions in non-quenched and tempered steel[J]. Metals,2018,8(8):639.
[22] WANG F,GUO H,LIU W,et al. Control of MnS inclusions in high- and low-sulfur steel by tellurium treatment[J]. Materials,2019,12(7):1034.
[23] WU X,WU L P,XIE J B,et al. Modification of sulfide by Te in Y1Cr13 free-cutting stainless steel[J]. Metallurgical Research & Technology,2020,117(1):107.
[24] ZHANG S,WANG F. Sulfide transformation with tellurium treatment for Y15 free-cutting steel[J]. Metallurgical and Materials Transactions B,2019,50(5):2284.
[25] Kay A R,Wilson W G,Burlington,et al. Methods of desulfurizing gases[J]. Pergamon,1988,14(3):11.
[26] XIE J B,WU L P,WU X Y,et al. Morphology and composition characteristics of solid solution in Te-treated Y1Cr17 steel[J]. Emerging Materials Research,2020,9(4):1.
[27] Ueda S,Morita K. Thermodynamics on the composition and morphology control of MnS-MnTe inclusions[C]//171th ISIJ Meeting. Tokyo:[s.n.],2016:20.
[28] Ogino K,Nogi K,Yamase O. Effects of selenium and tellurium on the surface tension of molten iron and the wettability of alumina by molten iron[J]. The Iron and Steel Institute of Japan,1983,23(3):234.
[29] 李杰,朱强斌,田钱仁,等. 碲改质303Cu不锈钢中MnS夹杂物形态[J]. 钢铁钒钛,2020,41(6):135.(LI Jie,ZHU Qiang-bin,TIAN Qian-ren,et al. Modified morphology of MnS inclusions in tellurium treated 303Cu stainlesss steel[J]. Iron Steel Vanadium Titanium,2020,41(6):135.)
[30] 白旭旭,杨树峰,刘威,等. 碲处理对20CrMnTi齿轮钢中MnS夹杂物改性效果[J]. 钢铁,2019,54(12):35.(BAI Xu-xu,YANG Shu-feng,LIU Wei,et al. Effect of tellurium treatment on modification of MnS inclusion in 20CrMnTi gear steel[J]. Iron and Steel,2019,54(12):35.)