کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1582478 | 1514875 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Inelastic neutron scattering of a Ti-44Â at.%Ni-6Â at.%Fe alloy exhibiting an incommensurate-commensurate transition
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Inelastic neutron scattering has been made for a Ti-44 at.%Ni-6 at.%Fe alloy which exhibits a second-order like incommensurate-commensurate (IC-C) transformation [M.-S. Choi, T. Fukuda, T. Kakeshita, Philos. Mag. 86 (2006) 67] in order to understand the nature of the transformation. The phonon frequencies of the [ζ ζ 0]-TA2 phonon branch near ζ = 1/3 decrease as temperature decreases, exhibit the lowest value at about 200 K and then increase on further cooling. This temperature (200 K) is near the temperature below which diffuse incommensurate scattering can be noticed, and it is by 20 K higher than the IC-C transition temperature. Presumably, the phonon softening is responsible for the formation of the incommensurate state, but not directly connected to the formation of the commensurate state.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volumes 481â482, 25 May 2008, Pages 235-238
Journal: Materials Science and Engineering: A - Volumes 481â482, 25 May 2008, Pages 235-238
نویسندگان
Takashi Fukuda, Mi-Seon Choi, Tomoyuki Kakeshita, Takuya Ohba,