微量碲对MnS夹杂物的改性提高中碳低硫钢的机械加工性能

IF 1.7 3区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING Ironmaking & Steelmaking Pub Date : 2023-04-16 DOI:10.1080/03019233.2023.2197526
N. Liu, Qianren Tian, Zifei Wang, Xiangyu Xu, Jianxun Fu
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引用次数: 2

摘要

摘要在工业工艺条件下,向中碳低硫钢中添加微量碲(13ppm和22ppm),以优化MnS夹杂物的形态,从而提高钢的机械加工性能。采用Voller-Beckermann微偏析模型计算了MnS包裹体的析出热力学和生长动力学。观察到的MnS夹杂物形态主要为多边形(III型),观察到的钢的微观组织为大块、针状铁素体和珠光体,夹杂物主要存在于大块铁素体中。夹杂物相对塑性的计算结果表明,13ppm的Te降低了夹杂物的相对塑性,而当Te含量为22ppm时,夹杂物的相对可塑性增加了约70%。与不含Te的钢相比,当Te含量为22ppm时,该材料具有最佳的可加工性,钢的平均切削力和平均表面粗糙度分别降低了3.47%和38.75%。
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Modification of MnS inclusion with trace tellurium to improve the machinability of medium-carbon low-sulfur steel
ABSTRACT Under the industrial process conditions, trace tellurium (13 ppm and 22 ppm) was added to medium-carbon low-sulfur steel to optimize the morphology of MnS inclusion and thereby enhance the machinability of the steel. Voller-Beckermann microsegregation model was used to calculate the precipitation thermodynamics and growth kinetics of MnS inclusion. The morphology of observed MnS inclusion is mainly polygonal (type III), the observed microstructures of the steel are bulk-, acicular-ferrite, and pearlite, the inclusions are mainly present in the bulk-ferrite. The calculation results of inclusion relative plasticity show that 13 ppm Te reduces the relative plasticity of inclusions, while at a Te content of 22 ppm, the relative plasticity of inclusions increases by approximately 70%. Compared with the steel without Te, when containing 22 ppm Te, the material has the best machinability, the average cutting force and average surface roughness of steel are reduced by 3.47% and 38.75%, respectively.
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来源期刊
Ironmaking & Steelmaking
Ironmaking & Steelmaking 工程技术-冶金工程
CiteScore
3.70
自引率
9.50%
发文量
125
审稿时长
2.9 months
期刊介绍: Ironmaking & Steelmaking: Processes, Products and Applications monitors international technological advances in the industry with a strong element of engineering and product related material. First class refereed papers from the international iron and steel community cover all stages of the process, from ironmaking and its attendant technologies, through casting and steelmaking, to rolling, forming and delivery of the product, including monitoring, quality assurance and environmental issues. The journal also carries research profiles, features on technological and industry developments and expert reviews on major conferences.
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