Characterization of the three-dimensional morphology of MnS precipitate in Ca-treated resulphurized free-cutting steel via fracture surface analysis

IF 1.7 3区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING
Xiaoliang Gao, Hong-Yao Wei, Q. Ren, Lifeng Zhang
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引用次数: 0

Abstract

ABSTRACT MnS precipitates in resulfurized free-cutting steels are elongated in the rolling direction and then have a large size in length. It is difficult to accurately obtain the characteristics especially full length of MnS by two-dimensional observation. Three-dimensional morphology of MnS in a Ca-treated resulfurized free-cutting steel was investigated by using tensile method and scanning electron microscopy. Compared with the statistical results of MnS in two-dimension, the size in three-dimension was larger. In two-dimension image, the length of MnS was in the range of ~100 μm, and the percent of MnS with size in the rage of 50~100 μm was about 1.15%. In three-dimension image, however, the length of MnS observed was in the range of ~325 μm, and the percent of MnS with size larger than 100 μm was about 5.73%. The results provide an insight into the role of fracture surface analysis in MnS characterization in resulfurized free-cutting steels.
通过断口分析表征Ca处理再硫化易切削钢中MnS沉淀的三维形貌
再硫化易切削钢中的MnS沉淀物在轧制方向上被拉长,然后在长度上具有大尺寸。通过二维观测很难准确地获得MnS的特征,尤其是全长。采用拉伸法和扫描电子显微镜研究了经Ca处理的再硫化易切削钢中MnS的三维形貌。与二维MnS的统计结果相比,三维MnS的尺寸更大。在二维图像中,MnS的长度在~100μm的范围内,尺寸在50~100μm范围内的MnS的百分比约为1.15%。然而,在三维图像中,观察到的MnS长度在~325μm之间,尺寸大于100μm的MnS的百分比约为5.73%。研究结果使我们深入了解了断口分析在再硫化易切削钢中MnS表征中的作用。
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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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