کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1575421 | 1514744 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Abatement of segregation with the electro and static magnetic field during twin-roll casting of 7075 alloy sheet
ترجمه فارسی عنوان
کاهش جداسازی با میدان مغناطیسی الکتریکی و استاتیکی در هنگام ریخته گری دوتایی ورق آلیاژ 7075
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کلمات کلیدی
جداسازی، 7075 آلیاژ آلومینیوم، فرآیند ریخته گری دوتایی، میدان مغناطیسی استاتیک، میدان الکترومغناطیسی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
چکیده انگلیسی
This study aims to investigate the influence of electromagnetic field on the distribution and composition of precipitates and on the mechanical properties of 7075 rolled sheets. The non-field and field microstructure and the mechanical properties were studied in detail by optical microscope (OM), electron probe microanalyzer (EPMA), multiple sample tensile as well as hardness tests. The Fine and equiaxed grains were obtained when introducing the alternating oscillating electromagnetic field to the twin-roll casting (TRC) process with 0.13Â T static magnetic and 386Â A alternating current (AC) intensities. Due to a damping effect on the convection generated by applying the electro- and static magnetic fields, the undercooling of the melt decreases and the continuous net-like precipitates are refined and broken remarkably. Especially under oscillating electromagnetic field conditions, the best uniform microstructure without mottled segregation was obtained. In addition, the fields can effectively enhance solute mixing capacity and reduce heat discharge, resulting in the increase of mechanical properties of 7075 sheets in both the longitudinal and long transverse directions. The optimum process in the present study, in which the higher solid solubility in Al matrix and the stronger hardness as well as tensile strength was gained as compared to other rolled specimens, is considered as alternating oscillating TRC process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 599, 2 April 2014, Pages 279-285
Journal: Materials Science and Engineering: A - Volume 599, 2 April 2014, Pages 279-285
نویسندگان
X. Su, G.M. Xu, D.H. Jiang,