Effect of temperature on microstructure and formability of Al-10 mass% Si coatings
| العنوان: | Effect of temperature on microstructure and formability of Al-10 mass% Si coatings |
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| المؤلفون: | Qi-fu Zhang, Chang-sheng Liu, Zhang Jie, She-ming Jiang |
| المصدر: | Journal of Iron and Steel Research International. 23:270-275 |
| بيانات النشر: | Springer Science and Business Media LLC, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Materials science, Kirkendall effect, Scanning electron microscope, Metallurgy, Metals and Alloys, Intermetallic, FEAL, 02 engineering and technology, Hot stamping, engineering.material, Microstructure, 020501 mining & metallurgy, 0205 materials engineering, Coating, Mechanics of Materials, Materials Chemistry, engineering, Formability |
| الوصف: | The type-1 aluminized (Al-10 mass% Si) coating on hot stamped steel is used in commercial applications. The effect of temperature on microstructure and formability of the Al-10 mass% Si coating was investigated. Hot-dip aluminized 22MnB5 steel was heated at 870, 900, 930, and 1050 °C for 5 min. After heat treatment at different temperatures, the microstructure of Al-10 mass% Si was characterized by field-emission scanning electron microscopy and energy-dispersive spectroscopy. The results show that when the Al-10 mass% Si coating was heated at 870 °C for 5 min, three types of intermetallic phases were formed: two ternary Fe-Si-Al phases (Fe 2 SiAl 7 + Fe 2 Si 2 Al 5 , and Fe 2 SiAl 2 + Fe 2 Si 2 Al 5 ) and one binary Fe-Al phase (FeAl 3 ). The phases in the coating became Fe 2 SiAl 2 + Fe 2 Si 2 Al 5 and FeAl 3 , the binary Fe-Al phase near the interface became Fe 2 Al 5 and the Si-rich layers were decreased with the increase of heating temperature. When the heat treatment was 1050 °C for 5 min, the Si-rich layer disappeared, the coating consisted of FeAl and Fe 3 Al, and the Kirkendall voids were formed. When the heating temperature was increased through 870, 900, and 930 °C, the coating hardness was reduced and cracks were formed in the coating after hot stamping. The formability of the coating with temperature change was confirmed by a hot stamping test. When heated at 1050 °C, the coating was formable but continuous Kirkendall voids were observed. |
| تدمد: | 2210-3988 1006-706X |
| DOI: | 10.1016/s1006-706x(16)30044-9 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::7a039482c443930ecab220a377fe373b https://doi.org/10.1016/s1006-706x(16)30044-9 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........7a039482c443930ecab220a377fe373b |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 22103988 1006706X |
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| DOI: | 10.1016/s1006-706x(16)30044-9 |