کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1576282 1514773 2013 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of copper addition on the microstructure and shape recovery of Fe–Mn–Si–Cr–Ni shape memory alloys
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Effect of copper addition on the microstructure and shape recovery of Fe–Mn–Si–Cr–Ni shape memory alloys
چکیده انگلیسی

The effect of Cu addition on the microstructure and shape recovery behaviour of Fe–Mn–Si–Cr–Ni shape memory alloys has been studied. Microstructural characterization revealed that Cu is soluble in these alloys at least up to 3 wt% in the austenite (γ) phase and acts as a strong γ stabilizer. The γ–ε martensite transformation start temperature (MS) and the reverse ε–γ transformation start temperature (AS) were observed to decrease with Cu addition, although at different rates. Copper addition promotes the formation of incoherent Fe5Ni3Si2 type intermetallic π-phase precipitate during ageing and its amount increases with the amount of Cu in the alloy. Most importantly, Cu results in the deterioration of shape recovery of Fe–Mn–Si–Cr–Ni shape memory alloys, by increasing stacking fault energy (SFE), by decreasing the resistance to plastic deformation and by lowering the MS temperature of the γ phase.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 570, 15 May 2013, Pages 13–26
نویسندگان
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