کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1622956 1516405 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phase transformation in TC21 alloy during continuous heating
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Phase transformation in TC21 alloy during continuous heating
چکیده انگلیسی

A dilatometry for investigating phase transformation in TC21 alloy was observed at constant heating rate. These experiments were conducted at a computer-controlled horizontal pushrod dilatometer to monitor the thermal expansion caused by the transformation as a function of heating time under different heating rates. Microstructures at different stages of the transformation had been observed by scanning electron microscopy. Results showed that phase transformation in TC21 alloy during continuous heating included three stages, retained β → acicular α, acicular α → β and equiaxed α → β. The rates of the alloy expansion decreased after an increase, and then increased intensively, and finally, it decreased to a constant. Moreover, the activation energy value related to the α → β transformation in TC21 alloy was evaluated based on the JMA equation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 472, Issues 1–2, 20 March 2009, Pages 252–256
نویسندگان
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