کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1619974 | 1005727 | 2010 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure and mechanical properties of mechanically alloyed Al2O3/Ti-Cu-Ni-Sn bulk metallic glass composites prepared by vacuum hot-pressing
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Microstructure and mechanical properties of mechanically alloyed Al2O3/Ti-Cu-Ni-Sn bulk metallic glass composites prepared by vacuum hot-pressing Microstructure and mechanical properties of mechanically alloyed Al2O3/Ti-Cu-Ni-Sn bulk metallic glass composites prepared by vacuum hot-pressing](/preview/png/1619974.png)
چکیده انگلیسی
In the present study, Ti50Cu28Ni15Sn7 metallic glass and its composite powders reinforced with 4-12Â vol.% of Al2O3 added were successfully prepared by mechanical alloying. In the ball-milled composites, an amorphous matrix with a homogeneous dispersion of Al2O3 particles was developed. The metallic glass composite powders were found to exhibit a large supercooled liquid region before crystallization. The presence of Al2O3 particles did not change the glass formation ability of the amorphous Ti50Cu28Ni15Sn7 powders. Consolidation of the as-milled Ti50Cu28Ni15Sn7 composite powders was performed at a temperature slightly higher than the glass transition temperature under a pressure of â¼1.2Â GPa; using this method, the bulk metallic glass composite discs were prepared successfully. However, partial crystallization of the amorphous matrix during the hot-pressing process was noticed. The fracture strength of consolidated composite compacts was increased with Al2O3 additions. The pre-existing particle boundaries may serve as the crack initiation sites which resulted in the brittle failure of the Ti50Cu28Ni15Sn7 BMG composites.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 504, Supplement 1, August 2010, Pages S110-S113
Journal: Journal of Alloys and Compounds - Volume 504, Supplement 1, August 2010, Pages S110-S113
نویسندگان
Hong-Ming Lin, Chin-Yi Chen, Chien-Yie Tsay, Chih-Feng Hsu, Pee-Yew Lee,