Industrial practice of tellurium modified sulfides in the non-quenched and tempered 38MnVS6 steels

Liu Zengping; Li Jie; Shen Wei; Fu Jianxun

doi:10.7513/j.issn.1004-7638.2023.02.029

Volume 44 Issue 2

Apr. 2023

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Liu Zengping, Li Jie, Shen Wei, Fu Jianxun. Industrial practice of tellurium modified sulfides in the non-quenched and tempered 38MnVS6 steels[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(2): 200-204. doi: 10.7513/j.issn.1004-7638.2023.02.029

Citation:

Liu Zengping, Li Jie, Shen Wei, Fu Jianxun. Industrial practice of tellurium modified sulfides in the non-quenched and tempered 38MnVS6 steels[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(2): 200-204. doi: 10.7513/j.issn.1004-7638.2023.02.029

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Industrial practice of tellurium modified sulfides in the non-quenched and tempered 38MnVS6 steels

doi: 10.7513/j.issn.1004-7638.2023.02.029

Liu Zengping^1
,,
Li Jie²,
Shen Wei²,
Fu Jianxun^{2
,
,}

1.
Chengde Jianlong Special Steel Co., Ltd., Hebei Key Laboratory of Semi Molten Steel Smelting High Clean and High Quality Special Steel, Chengde 067201, Hebei, China
2.
Center for Advanced Solidification Technology (CAST), School of Materials Science and Engineering, Shanghai University, State Key Laboratory of Advanced Special Steel, Shanghai 200444, China

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Received Date: 2022-01-24
Publish Date: 2023-04-30

Abstract

Abstract

The morphology and rating of sulfide in the unmodified and modified 38MnVS6 steels were analyzed by means of metallographic microscope, scanning electron microscope and electrolytic etching. The effect of tellurium on the two-dimensional and three-dimensional morphology of sulfides in the steels was studied. The effect of tellurium on the mechanical properties of the non-quenched and tempered 38MnVS6 steels was studied by testing and analyzing the mechanical properties of the finished bars. The results show that after tellurium modification, the sulfide rating in the steel decreases from fine system 3.0 and coarse system 2.0 to fine system 2.0 and coarse system 1.5. The standard rating is changed from F to C. The aspect ratio of about 90% sulfides in the tellurium modified steels is controlled within 6, and more than 50% is controlled between 1 and 3. Most sulfides in the unmodified steels have the appearance of long strips, which were mainly changed to intermittent and ellipsoid after modification. After modification, the yield strength, the tensile strength, the fracture elongation, the reduction of area and other mechanical properties of the non-quenched and tempered 38MnVS6 steels meet the technical requirements.
- 38MnVS6,
- tellurium modification,
- sulfide,
- mechanical properties

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References(16)

References

[1]	董成瑞, 任海鹏, 金同哲. 微合金非调质钢[M]. 北京: 冶金工业出版社, 2000. Dong Chengrui, Ren Haipeng, Jin Tongzhe. Microalloy non-quenched and quenched steel[M]. Beijing: Metallurgical Industry Press, 2000.
[2]	Liu Ruining, Wang Fuming. Advance in microalloying non-quenched-tempered steels for auto[J]. Special Steel, 2006,27(3):5. (刘瑞宁, 王福明. 汽车用微合金化非调质钢的进展[J]. 特殊钢, 2006,27(3):5. doi: 10.3969/j.issn.1003-8620.2006.03.013
[3]	李梦龙. 易切削非调质钢中硫化物生成行为与均匀化控制研究[D]. 北京: 北京科技大学, 2015. Li Menglong. Study on sulfide generation behavior and homogenization control in easy-cutting non-quenched and quenched steel[D].Beijing:University of Science and Technology Beijing, 2015.
[4]	谢啸宇, 顾超, 王敏, 等. 中高硫钢中硫化锰夹杂物控制技术[J]. 钢铁, 2021, 56(12): 52-61. Xie Xiaoyu, Gu Chao, Wang Min, et al. Manganese sulfide inclusion control technology in medium and high sulfur steel[J]. Iron and Steel, 2021, 56(12): 52-61.
[5]	Zhang Hao, Liu Nianfu, Hu Fangzhong, et al. Study on modification of inclusions by Mg in 20MnCr5 gear steel[J]. Journal of Iron and Steel Research, 2021,33(8):775−783. (张浩, 刘年富, 胡芳忠, 等. 镁对20MnCr5齿轮钢中夹杂物的改质研究[J]. 钢铁研究学报, 2021,33(8):775−783.
[6]	Zhu Qiangbin, Li Jie, Deng Xiangyang, et al. Inclusion analysis in magnesium free-cutting steel[J]. Iron Steel Vanadium Titanium, 2021,42(2):179−187,192. (朱强斌, 李杰, 邓向阳, 等. 镁系易切削钢中夹杂物分析[J]. 钢铁钒钛, 2021,42(2):179−187,192. doi: 10.7513/j.issn.1004-7638.2021.02.029
[7]	Cao Chenwei ,Wang Gaofeng, Li Jie, et al. Comparative analysis of the effect of Ca and Mg-Al modification on the composite inclusions in S50 C die steel[J] Metallurgical Research & Technology, 2021, 118(5): 512.
[8]	Huang Yu, Cheng Guoguang, Xie You. Modification mechanism of cerium on the inclusions in drill steel[J]. Acta Metallurgica Sinica, 2018,54(9):1253−1261. (黄宇, 成国光, 谢有. 稀土Ce对钎具钢中夹杂物的改质机理研究[J]. 金属学报, 2018,54(9):1253−1261. doi: 10.11900/0412.1961.2018.00079
[9]	Wu Xiangyu, Wu Liangpin, Xie Jianbo, et al. Modification of sulfide by Te in Y1Cr13 free-cutting stainless steel[J]. Metallurgical Research & Technology, 2020, 117(1):12.
[10]	Li Jie, Zhu Qiangbin, Tian Qianren, et al. Modified morphology of MnS inclusions in tellurium treated 303Cu stainless steel[J]. Iron Steel Vanadium Titanium, 2020,41(6):135−141. (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):135−141.
[11]	Shen Ping, Zhou Lei, Yang Qiankun, et al. Modification of MnS inclusion by tellurium in 38MnVS6 micro-alloyed steel[J]. Metallurgical Research and Technology, 2020, 117(6): 615.
[12]	Cao Chenwei, Zhang Panpan, Hu Shaohui, et al. Comparative analysis of microstructure and sulfides of chalcogenide, tellurium and lead-based free-cutting steels[J]. Metallurgical Analysis, 2020,40(7):8−15. (曹晨巍, 张盼盼, 胡绍晖, 等. 硫系、碲系、铅系易切削钢组织及硫化物对比分析[J]. 冶金分析, 2020,40(7):8−15. doi: 10.13228/j.boyuan.issn1000-7571.011061
[13]	Shen Ping, Yang Qiankun, Zhang Dong, et al. Application of tellurium in free-cutting steels[J]. Journal of Iron and Steel Research, International, 2018,25:787−795. doi: 10.1007/s42243-018-0123-2
[14]	Zhang Dong, Shen Ping, Xie Jianbo, et al. A method for observing tridimensional morphology of sulfide inclusions by non-aqueous solution electrolytic etching[J]. Journal of Iron and Steel Research International, 2019,26(3):275−284. doi: 10.1007/s42243-018-0142-z
[15]	钢铁. 用标准图像确定改进机械加工性能的结构钢硫化物形状的特征.显微照相法[S]. 法国: NF A 04-108-1986. Steel. Standard images are used to characterize the shape of structural steel sulfides with improved machinability. Micrography[S]. France: NF A 04-108-1986.
[16]	Shen Ping, Yang Qiankun, Zhang Dong, et al. The effect of tellurium on the formation of MnTe-MnS composite inclusions in non-quenched and tempered steel[J]. Metals, 2018,8(639):1−12.