Subsurface macro-inclusions and solidified hook character in aluminum-killed deep-drawing steel slabs
| العنوان: | Subsurface macro-inclusions and solidified hook character in aluminum-killed deep-drawing steel slabs |
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| المؤلفون: | Xiaoxuan Deng, Chenxi Ji, Yun-qing Ji, Guosen Zhu, Xin-hua Wang, Linping Li |
| المصدر: | International Journal of Minerals, Metallurgy, and Materials. 21:531-543 |
| بيانات النشر: | Springer Science and Business Media LLC, 2014. |
| سنة النشر: | 2014 |
| مصطلحات موضوعية: | Number density, Materials science, Hook, Scanning electron microscope, Mechanical Engineering, Metallurgy, Metals and Alloys, chemistry.chemical_element, chemistry, Geochemistry and Petrology, Mechanics of Materials, Aluminium, Metallic materials, Materials Chemistry, Slab, Deep drawing, Carbon |
| الوصف: | Subsurface macro-inclusions and hooks are detrimental to the surface quality of deep-drawing steel sheets. However, little is known about the relationship between macro-inclusions and hooks. Thus, in this work, two ultralow carbon (ULC) steel slabs and two low carbon (LC) aluminum-killed steel slabs were sampled to study the relationship between hooks and subsurface macro-inclusions, which were detected on the cross-sections of steel samples with an area of 56058 mm2 using an automated scanning electron microscopy/energy-dispersive X-ray spectroscopy system. Results show that subsurface inclusions larger than 200 μm were almost entrapped by hook structures, whereas the location of other inclusions smaller than 200 μm had no obvious dependence on the location of solidified hooks. Furthermore, the number density (ND) of subsurface inclusions larger than 200 μm decreased from 0.02 to 0 cm−2 in ULC steel as the mean hook depth decreased from 1.57 to 1.01 mm. Similar trends were also observed in LC steel. In addition, the detected inclusions larger than 200 μm were concentrated in the region near the slab center (3/8 width-5/8 width), where hook depths were also larger than those at any other locations. Therefore, minimizing the hook depth is an effective way to reduce inclusion-induced sliver defects in deep-drawing steels. |
| تدمد: | 1869-103X 1674-4799 |
| DOI: | 10.1007/s12613-014-0939-0 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::60f3aea74608c5013cfd02e1f6f31cec https://doi.org/10.1007/s12613-014-0939-0 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........60f3aea74608c5013cfd02e1f6f31cec |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1869103X 16744799 |
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| DOI: | 10.1007/s12613-014-0939-0 |