کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1581217 1514855 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Gradient submicrocrystalline structure in Fe–Cr–Co system hard magnetic alloys
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Gradient submicrocrystalline structure in Fe–Cr–Co system hard magnetic alloys
چکیده انگلیسی

The evolution of the structure and microhardness of Fe–25Cr–15Co and Fe–30Cr–8Co (number indicate wt.%) hard magnetic alloys during complex two-stage upsetting-torsion under isothermal conditions at different temperatures is experimentally studied. It is revealed that the deformation leads to a strong refinement of the initial coarse-grained structure in both alloys. The generated structure is non-uniform through the body of the samples and has gradient character. In the active zone of deformation near to the mobile head, there is a microcrystalline layer with a grain size of about 5 μm in a single phase Fe–30Cr–8Co alloy and a micro duplex structure with a grain size of about 0.5 μm in a two-phase Fe–15Co–25Cr alloy. With removal from the active zone of deformation the grain size increases, and microhardness decreases.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 503, Issues 1–2, 15 March 2009, Pages 99–102
نویسندگان
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