اثرات فرایند پانچ بر روی جهت گیری های کریستال، خواص مغناطیسی و مکانیکی در فولاد سیلیکونی غیر گرا
|کد مقاله||سال انتشار||تعداد صفحات مقاله انگلیسی||ترجمه فارسی|
|142336||2017||19 صفحه PDF||سفارش دهید|
نسخه انگلیسی مقاله همین الان قابل دانلود است.
هزینه ترجمه مقاله بر اساس تعداد کلمات مقاله انگلیسی محاسبه می شود.
این مقاله تقریباً شامل 3943 کلمه می باشد.
هزینه ترجمه مقاله توسط مترجمان با تجربه، طبق جدول زیر محاسبه می شود:
Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)
Journal : Journal of Magnetism and Magnetic Materials, Volume 444, 15 December 2017, Pages 211-217
In an attempt to investigate the effects of punching process on crystal orientations, magnetic and mechanical properties in non-oriented silicon steel, the steel sheet was punched for circular shape of Î¦40Â mm. The crystal orientations and small-angle grain boundaries were characterized by electron backscatter diffraction (EBSD). The results indicated that the initial crystal orientations within a distance of 200Â Î¼m away from the sheared edge were significantly changed after the punching process. In this area, the fractions of the directions with a high value of magnetocrystalline anisotropy energy Ea, ã1Â 1Â 1ã, ã2Â 1Â 2ã and ã1Â 1Â 2ã can reach up to 0.619. However, the fractions of the directions ã0Â 0Â 1ã and ã1Â 1Â 3ã accounts for only 0.096, which have a lower value of Ea. Moreover, the fraction of small-angle grain boundaries markedly increased in the area of about 200Â Î¼m from the sheared edge, which is mainly attributed to the dislocations multiplication and dislocations motion. The magnetic domain structures were characterized by an optical microscope according to the Bitter method. The results showed that the width of magnetic domain in the sheared edge was much larger than that in the center and the patterns also existed a big difference. The Vickers HV0.1 method was employed to measure the microhardness of the sheared edge. It was found that the values of microhardness within a distance of 400Â Î¼m away from the sheared edge decreased from 259 to 167 due to the effect of work hardening, which is mainly caused by the dislocations pile-ups near the grain boundaries.