کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1582515 | 1514875 | 2008 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the influence of austenitization on the morphology of α-phase in tempered Cu-Zn-Al shape memory alloys
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The paper reports some austenitization effects on the α-phase morphology in a tempered martensitic Cu-21.57 Zn-7 Al (wt.%) shape memory alloy (SMA). By means of differential scanning calorimetry, X-ray diffraction and optical and electron microscopy, it has been shown that the effects of the stress-state induced in austenite persist even after martensitic transformation and tempering at 773 K. The two analyzed austenitization states, hot-pressed and homogenized, respectively, aimed to reproduce two steps of an industrial technologic flow for SMA manufacturing. Basically, austenitic hot-working diminished the size of disoriented α-phase precipitates while austenitic homogenization enabled the formation of a Widmanstätten structure with oriented long α-phase needles, among which those corresponding to α(1 1 1) intersect at about 70° and those corresponding to α(2 0 0) at 90°.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volumes 481â482, 25 May 2008, Pages 395-403
Journal: Materials Science and Engineering: A - Volumes 481â482, 25 May 2008, Pages 395-403
نویسندگان
Leandru-Gheorghe Bujoreanu,