کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7981530 | 1514746 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An in situ synchrotron X-ray diffraction study of precipitation kinetics in a severely deformed Cu-Ni-Si alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: An in situ synchrotron X-ray diffraction study of precipitation kinetics in a severely deformed Cu-Ni-Si alloy An in situ synchrotron X-ray diffraction study of precipitation kinetics in a severely deformed Cu-Ni-Si alloy](/preview/png/7981530.png)
چکیده انگلیسی
In situ synchrotron X-ray diffraction was used to study the decomposition kinetics of a metastable Cu-2.5Ni-0.6Si (wt%) alloy after severe plastic deformation by equal-channel angular pressing (ECAP) and high-pressure torsion (HPT). The measurements were performed at room temperature and also at high temperatures of 723, 823 and 973 K in order to determine the ageing effect after processing. Two forms of precipitates, namely δ-Ni2Si and γ-Ni5Si2, were identified and the sequence of their appearance was well established for ECAP processing and ageing. There was no detection of either a modulated structure resulting from spinodal decomposition or an ordered structure nucleated from the modulated structure. An X-ray hybrid pixel array detector (XPAD-S140 detector) permitted the detection of the nucleation stages of the δ-Ni2Si phase that began soon after 24 s of ageing at 723 K. There was also no trace of any amorphization of the matrix phase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 597, 12 March 2014, Pages 288-294
Journal: Materials Science and Engineering: A - Volume 597, 12 March 2014, Pages 288-294
نویسندگان
H. Azzeddine, B. Mehdi, L. Hennet, D. Thiaudière, B. Alili, M. Kawasaki, D. Bradai, T.G. Langdon,