کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
794844 902565 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Processing map for hot working of Inconel 718 alloy
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Processing map for hot working of Inconel 718 alloy
چکیده انگلیسی

Cylindrical specimens of Inconel 718 alloy with grain size of 90 μm were used in the compression tests and processing maps at the strains of 0.1, 0.3, 0.5 and 0.7 were developed at 950–1150 °C in the strain rate range 0.001–100 s−1. Only one unstable region for adiabatic shear bands and one small dynamic recrystallization zone in the stable region are exhibited in the processing map at 0.1 strain. As the strain is beyond 0.3, there exist three unstable regions in the processing maps where one is for adiabatic shear bands and the other two are for intergranular cracking. At the same time, the zone of dynamic recrystallization with a peak efficiency of 0.39 at about 950 °C and 0.001 s−1 in the stable region is enlarged and the distribution of which is from lower temperature and lower strain rate to higher ones. Optical micrographs of the specimens compressed to 0.7 strain show good agreement with the processing maps and main hot working schedules have been designed. Influence of initial grain size from 10 μm to 90 μm on the occurrence temperature of adiabatic shear bands and intergranular cracking has been analyzed at a strain rate of 100 s−1 and in the temperature range 900–1200 °C.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 211, Issue 3, 1 March 2011, Pages 433–440
نویسندگان
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