|
|
Evolution of MnS-MnTe inclusions during heating of tellurium treated sulfur-containing steel |
HUANG Qiao1, REN Ying1, ZHANG Li-feng2 |
1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. School of Mechanical and Materials Engineering, North China University of Technology, Beijing 100144, China |
|
|
Abstract The evolution of MnS-MnTe inclusions in tellurium treated high sulfur steel during the heating process was studied through laboratory experiments and thermodynamic calculations. The regularity and mechanism of change for MnS-MnTe inclusions were obtained. With the increase of the tellurium content and the Te/S mass ratio in the steel increased, the average diameter of MnS-MnTe inclusions increased while the average aspect ratio decreased. After heating, since MnS and MnTe in the steel matrix after heating fully grew and precipitated, the effect of modification after tellurium treatment on MnS inclusions was more obvious than that before heating. Meanwhile, compared with inclusions in samples before heating, with the increase of the Te/S mass ratio in the steel, the average diameter of inclusions was larger, the number density was lower and the area fraction was higher. With the increase of Te/S mass ratio in the steel, the proportion of dendritic Type II inclusions decreased while more spherical Type I and massive Type III precipitated in MnS-MnTe inclusions. Under the current experimental condition, after Te/S mass ratio reaching 0.33, the initial precipitation temperature of MnS was lower than the solidus temperature of the liquid steel, which was conducive to inhibit the formation of Type II MnS at the grain boundary during the eutectic reaction. When the Te/S mass ratio was higher than 1.35, numerous spherical pure MnTe inclusions precipitated in the steel matrix.
|
Received: 27 December 2021
|
|
|
|
[1] |
车巨龙,鲜奋强,窦亚斌,等. 非调质钢中MnS分布对轧材横向塑性的影响[J]. 中国冶金,2020,30(6):48.
|
[2] |
张志刚,任英,成功,等. 非调质钢中夹杂物生成热力学[J]. 中国冶金,2020,30(4):23.
|
[3] |
王伟健,罗艳,张立峰,等. 20CrMo合金钢生产过程中非金属夹杂物的演变[J]. 工程科学学报,2021,43(8):1090.
|
[4] |
李素芹,李士琦,王雅娜. 钢中残余有害元素控制对策的分析与探讨[J]. 钢铁,2001,36(12):70.
|
[5] |
张立峰. 钢中非金属夹杂物几个需要深入研究的课题[J]. 炼钢,2016,32(4):1.
|
[6] |
张立峰. 关于钢洁净度指数的讨论[J]. 炼钢,2019,35(3):1.
|
[7] |
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.
|
[8] |
Zhang X,Roelofs H,Lemgen S,et al. Application of thermodynamic model for inclusion control in steelmaking to improve the machinability of low carbon free cutting steels[J]. Steel Research International,2004,75(5):314.
|
[9] |
YANG W,GUO C,LI C,et al. Transformation of inclusions in pipeline steels during solidification and cooling[J]. Metallurgical and Materials Transactions B,2017,48(5):1.
|
[10] |
LIU Y, ZHANG L, ZHANG Y,et al. Effect of sulfur in steel on transient evolution of inclusions during calcium treatment[J]. Metallurgical and Materials Transactions B,2018,49(2):610.
|
[11] |
陈登国,廖桑桑,徐李军,等. 含硫易切削模具钢高温热塑性行为探讨[J]. 中国冶金,2020,30(5):58.
|
[12] |
雍岐龙,刘清友,刘苏,等. 硫化锰在钢中的Ostwald熟化过程的控制性元素的理论分析[J]. 特殊钢,2004(6):7.
|
[13] |
贺莹莹,周铖,李鸿友,等. 硫系易切削钢中硫化物的高温行为[J]. 钢铁研究学报,2014,26(4):59.
|
[14] |
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.
|
[15] |
张立峰,李菲,方文. 钢液钙处理过程中钙加入量精准计算的热力学研究[J]. 炼钢,2016,32(2):1.
|
[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.
|
[17] |
ZHANG L,REN Q,DUAN H,et al. Modelling of non-metallic inclusions in steel[J]. Mineral Processing and Extractive Metallurgy:Transactions of the Institutions of Mining and Metallurgy,2020,129(2):184.
|
[18] |
SHEN P,ZHOU L,YANG Q,et al. Modification of MnS inclusion by tellurium in 38MnVS6 micro-alloyed steel[J]. Metallurgical Research and Technology,2020,117(6):615.
|
[19] |
ZHANG S,WANG F,YANG S,et al. Sulfide transformation with tellurium treatment for Y15 free-cutting steel[J]. Metallurgical and Materials Transactions B,2019,50(5):2284.
|
[20] |
Zheng L,Malfliet A,Wollants P,et al. Effect of surfactant Te on the behavior of alumina inclusions at advancing solid-liquid interfaces of liquid steel[J]. Acta Materialia,2016,120(1):443.
|
[21] |
Tanaka R,Yamazaki S,Hosokawa A,et al. Analysis of cutting behavior during tapping and measurement of tool edge temperature measured by a two-color pyrometer[J]. Journal of Advanced Mechanical Design,Systems,and Manufacturing,2013,7(2):115.
|
[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] |
林腾昌,门兵,程雄,等. 热处理对铸态钢中硫化锰夹杂物的影响[J]. 中国冶金,2021,31(4):48.
|
[24] |
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.
|
[25] |
Ueda S,Suzuki S,Yoshikawa T,et al. Thermodynamic property of tellurium in molten iron measured by the transpiration method[J]. ISIJ International,2017,57(3):397.
|
[26] |
Hemsworth J,Nicholas M,Crispin R. Tellurium embrittlement of type 316 steel[J]. Journal of Materials Science,1990,25(12):5248.
|
[27] |
于哲,刘承军,闵义,等. 含硫易切削钢夹杂物控制试验研究[J]. 钢铁钒钛,2017,38(3):140.
|
[28] |
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.
|
[29] |
WU X,WU L,XIE J,et al. Modification of sulfide by Te in Y1Cr13 free-cutting stainless steel[J]. Metallurgical Research and Technology,2020,117(1):107.
|
[30] |
Bellot J,Gantois M. The influence of sulphur and tellurium compounds on the hot deformability and mechanical properties of steels[J]. Transactions of the Iron and Steel Institute of Japan,1978,18(9):536.
|
[31] |
SHEN P,YANG Q,ZHANG D,et al. Application of tellurium in free-cutting steels[J]. Journal of Iron and Steel Research International,2018,25(8):787.
|
[32] |
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.
|
[33] |
张硕,杨树峰,李京社,等. 碲处理控制Y15易切削钢中MnS夹杂物形貌[J]. 钢铁,2017,52(9):27.
|
[34] |
田俊,王德永,屈天鹏,等. 非调质钢中MnS的析出与长大[J]. 钢铁研究学报,2020,32(8):740.
|
[35] |
Tien T,Van Vlack L,Martin R. The system MnTe-MnS:Progress report[J]. Transactions of the American Institute of Mining,Metallurgical and Petroleum Engineers,1968,242(10):2153.
|
|
|
|