کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10655709 | 1005234 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Physical metallurgy for wrought gamma titanium aluminides
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
This paper characterizes the phase equilibria among β/α(α2)/γ phases and phase transformations involving β-Ti phase in Ti-Al-M (M is β stabilizer against α phase in pure Ti) ternary systems at elevated temperatures. Based on the knowledge, a novel method has been proposed to develop a new class of wrought gamma alloys having a good hot workability for processing and good toughness in service at around 900 K. The ternary systems exhibit the β+α(α2)+γ three-phase tie triangle moving toward the Ti-Al binary edge with decreasing temperature, which results in a unique composition range with the transformation pathway of β+αâαâβ+γ. The high-temperature β phase is effective for hot forming processes, whereas the decomposition (β+αâα) and precipitation (αâβ+γ) of the β phase make it possible to produce a fully lamellar microstructure with very fine β particles dispersed within the lamellae.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 13, Issue 9, September 2005, Pages 993-999
Journal: Intermetallics - Volume 13, Issue 9, September 2005, Pages 993-999
نویسندگان
Masao Takeyama, Satoru Kobayashi,