کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10620916 | 988741 | 2006 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure and phase evolution in laser rapid forming of a functionally graded Ti-Rene88DT alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A graded Ti-Rene88DT superalloy material, which has potential uses in aero engines, was fabricated using laser rapid forming. A continuous compositional gradient from 100 wt.% Ti to 60 wt.% Rene88DT was achieved. The solidification behaviour and phase morphological evolution of the compositionally graded material were investigated. The study showed that a series of phase evolutions along the compositional gradient occurred: α â α + β â α + β + Ti2Ni â β + Ti2Ni â Ti2Ni + TiNi â TiNi. The phase transformation and microstructural evolution along the compositional gradient were analysed by considering the thermodynamic conditions as well as using microstructure selection models based on the maximum interface temperature criterion. The results were summarized in a microstructural selection map for the Ti-Ni system. The hardness value of the graded material was measured along the compositional gradient and the results were explained in terms of the presence of the various phases.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 54, Issue 7, April 2006, Pages 1901-1915
Journal: Acta Materialia - Volume 54, Issue 7, April 2006, Pages 1901-1915
نویسندگان
X. Lin, T.M. Yue, H.O. Yang, W.D. Huang,