کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1583761 | 1514891 | 2007 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Assessment of the high temperature deformation behavior of molybdenum silicide alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Assessment of the high temperature deformation behavior of molybdenum silicide alloys Assessment of the high temperature deformation behavior of molybdenum silicide alloys](/preview/png/1583761.png)
چکیده انگلیسی
A novel method to manufacture a refractory metal three phase Mo-2.7%Nb-8.9%Si-7.7%B at.% silicide alloy with mechanical alloying as the crucial processing step is presented. After consolidation a triplex ultra-fine grained microstructure with the average sizes of the Mo solid solution and both intermetallic compounds Mo3Si and Mo5SiB2 (T2 phase), respectively, ranging clearly in the sub-micrometer range was obtained. Tensile tests revealed structural superplasticity with strain to failures as high as 400% and temperatures as low as 1300 °C. Due to the extraordinary thermal stability of the microstructure isothermal annealing at 1700 °C for 10 h was needed for significant coarsening of the microstructure. A comparative assessment of the compressive creep properties of both microstructures in the temperature range between 1050 and 1315 °C showed an increase of the creep resistance of the coarsened microstructure by more than one order of magnitude in strain rate compared with the material in the as-processed condition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 463, Issues 1â2, 15 August 2007, Pages 216-223
Journal: Materials Science and Engineering: A - Volume 463, Issues 1â2, 15 August 2007, Pages 216-223
نویسندگان
P. Jéhanno, M. Heilmaier, H. Saage, M. Böning, H. Kestler, J. Freudenberger, S. Drawin,