کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10417508 902397 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thixoformability of hypoeutectic gray cast iron
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Thixoformability of hypoeutectic gray cast iron
چکیده انگلیسی
Hypoeutectic gray cast iron of composition Fe-2.6 wt%C-1.5 wt%Si, specifically developed as a thixoformable raw material, was prepared via conventional casting in sand molds. Samples were heated to the semi-solid state at 1160 and 1180 °C and held at these temperatures for 0, 30, 90 and 120 s to study their morphological evolution. Tests reveal that heating to the semi-solid range changes the morphology of the graphite from A to B type, but does not significantly affect interdendritic arm spacing between graphite lamellae. The resulting structure is composed of fine graphite and pearlite. Two platen compression tests were also carried out in an instrumented eccentric press to examine the material's semi-solid behavior at the same temperatures and holding times. The tests indicated that the semi-solid cast iron behaves like aluminum-silicon alloys, presenting a stress of up to 24 MPa under 80% strain and a corresponding apparent viscosity of up to 1.5 × 105 Pa s at 1180 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 212, Issue 6, June 2012, Pages 1225-1235
نویسندگان
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