کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8948633 | 1645675 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Diffusion behaviors of Rh, Ta, W, Re, Os and Ir in ternary L12-Ni3Al alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Diffusion behaviors of Rh, Ta, W, Re, Os, and Ir in ternary γâ²-Ni3Al alloys were investigated at 1373-1473â¯K using solid-solid single-phase diffusion couples together with the recently developed HitDIC software. The temperature- and concentration-dependent ternary interdiffusivities in Ni3Al-X (Xâ¯=â¯Rh, Ta, W, Re, Os, and Ir) were determined from the experimental concentration profiles, and also fully validated. After that, a thorough comparison among the interdiffusivities in γⲠNi-22.9â¯at% Al-0.1â¯at% X (Xâ¯=â¯Ti, V, Cr, Fe, Co, Ni, Nb, Mo, Ru, Rh, Ta, W, Re, Os, Ir and Pt) alloys at 1373-1473â¯K was then conducted, from which it can be concluded that W exhibits the lowest interdiffusivities in γâ²-Ni3Al alloy, followed by Ta. It is finally suggested that addition of W and Ta in γⲠphase can retard the coarsening of γⲠphase and stabilize the microstructure of the nickel-based single crystal superalloys in terms of the diffusion coefficient.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 102, November 2018, Pages 11-20
Journal: Intermetallics - Volume 102, November 2018, Pages 11-20
نویسندگان
Juan Chen, Lijun Zhang, Xiao-Gang Lu,