کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10142286 | 1646096 | 2018 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Superelastic response in ã1Â 2Â 2ã-oriented single crystals of FeMnAlNi shape memory alloy in tension and compression
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The superelastic response of the Fe43.5Mn34Al15Ni7.5 single crystalline shape memory alloy, oriented along the ã1 2 2ãâ¯direction was investigated. The quenched single crystals demonstrated superelastic strains of 4.0% in tension and 2.0% in compression. Ageing at 200â¯Â°C for 3â¯h led to the suppression of superelasticity in compression. An asymmetry in the tension and compression properties, probably associated with the ability of the martensite crystals to detwin under stress, was detected. It is likely that the detwinning of γâ²-martensite in compression leads to an increase in the mechanical hysteresis ÎÏ and the stresses Ïcr required for the onset of strain associated with the stress-induced martensitic transformation in quenched crystals, suppressing superelasticity in the aged crystals. Tension without the detwinning of γâ²-martensite result in a weak influence of coherent B2 (bcc/NiAl) precipitates on the mechanical hysteresis ÎÏ.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 233, 15 December 2018, Pages 195-198
Journal: Materials Letters - Volume 233, 15 December 2018, Pages 195-198
نویسندگان
V.V. Poklonov, Y.I. Chumlyakov, I.V. Kireeva, V.A. Kirillov,