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effect of casting diameter and heat treatment process on microstructural evolution and mechanical properties of fe55-xcr18mo7b16c4nbx(x=0,3) ribbons and nanostructured rods
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نویسنده
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tavakoli harandi m. ,askari-paykani m. ,shahverdi h. ,nili ahmadabadi m.
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منبع
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iranian journal of materials science and engineering - 2019 - دوره : 16 - شماره : 1 - صفحه:68 -76
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چکیده
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Onestep and twostep annealing techniques were used to examine the relationship between microstructure and mechanical properties during compression tests in ironbased ribbons and nanostructured 1 and 2.5mm cylindrical rods. the xray diffraction, microstructural, and mechanical results showed that substituting nb for fe had a minor effect on glassforming ability but increased the formability index. the novel twostep annealing process resulted in a remarkable formability index of 16.62 gpa, yield stress of 2830 mpa, ultimate strength of 3866 mpa, and 4.3% plastic strain. a ductile nanosized alpha;fe framework and boroncontaining nano precipitations, which caused zener pinning effect, were responsible for these novel mechanical properties.
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کلیدواژه
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: casting ,rapid solidification ,heat treatment ,microstructure ,mechanical properties
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آدرس
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tarbiat modarres university, department of materials engineering, iran, tarbiat modarres university, department of materials engineering, iran, tarbiat modarres university, department of materials engineering, iran, university of tehran, school of metallurgy and materials engineering, college of engineering, school of metallurgy and materials engineering, college of engineering, university of tehran, tehran, iran, iran. university of tehran, center of excellence for high performance materials, school of metallurgy and materials engineering, college of engineering, iran
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پست الکترونیکی
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nili@ut.ac.ir
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Authors
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