کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1609477 1516256 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phase-field study on the pre-precipitated phase of ordered intermetallic compounds in binary and ternary Ni–Al base alloys
ترجمه فارسی عنوان
مطالعه فازی در فاز قبل از رسوب شدن ترکیبات متمرکز میان فلزی در آلیاژهای پایه نانوالکتریکی ترکیبی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی


• The pre-precipitated phase of ordered intermetallic compound is studied at atomic scale.
• There exists L10 or L10 (M = 1) pre-precipitated phase before ordered phase formed.
• The pre-precipitated phase is L10 phase in Ni–Al alloy.
• For Ni–Al–V alloy, if DO22 ordered phase appears first, the pre-precipitated phase is L10 (M = 1) phase.
• For Ni–Al–V alloy, if L12 ordered phase appears first, the pre-precipitated phase is L10 phase.

The pre-precipitation processes of ordered intermetallic compound L12 (Ni3Al) in binary Ni–14.0 at.%Al alloy, L12 (Ni3Al) and DO22 (Ni3V) in ternary Ni–Al–V alloy were studied using the microscopic phase-filed dynamic model. It is found that prior to the formation of L12 or DO22 ordered phase, a pre-precipitated phase appears first. For the binary alloy, Ni atoms aggregate on (0 0 2) plane and deplete on (0 0 1) plane, Al atoms aggregate on (0 0 1) plane and deplete in (0 0 2) plane, the pre-precipitated phase is L10 phase. For the ternary alloy, if the DO22 ordered phase appears first, Ni atoms aggregate on (0 0 2) plane and deplete on (0 0 1) plane, the aggregation and ordering of V atoms on (0 0 1) plane are faster than those of Al atoms, the pre-precipitated phase is L10 (M = 1) phase; if the L12 ordered phase appears first, Ni atoms aggregate on (0 0 2) plane and deplete on (0 0 1) plane, the aggregation and ordering of Al atoms on (0 0 1) plane are faster than those of V atoms, the pre-precipitated phase is L10 phase.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 637, 15 July 2015, Pages 149–154
نویسندگان
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