کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1580414 | 1514835 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of crystalline phases on deformation and warm formability of a bulk metallic glass composite within supercooled liquid region
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The thermal and mechanical properties of a Zr66.4Nb6.4Cu10.5Ni8.7Al8.0 bulk metallic glass composite (BMGC) have been investigated. The thermal properties were determined by using a differential scanning calorimeter (DSC), while the phase and composition analysis of crystalline precipitates within glassy matrix were carried out by X-ray diffraction (XRD). The deformation behavior has also been investigated through a series of compression tests performed under several strain rates between 10â4Â sâ1 and 10â2Â sâ1 at various temperatures within supercooled liquid region (SLR). This BMG composite was found to have improved high temperature strength compared to other Zr-based monolithic BMGs. The in situ formed crystalline phases are believed to hinder the viscous flow of glassy matrix to raise the high temperature strength, compensating more the minor softening of crystalline phases at higher temperatures within the SLR. The warm formability of the composite was also estimated by applying the dynamic materials model (DMM) and the results were verified by subsequent laboratory-scale extrusion tests.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 526, Issues 1â2, 25 November 2009, Pages 62-68
Journal: Materials Science and Engineering: A - Volume 526, Issues 1â2, 25 November 2009, Pages 62-68
نویسندگان
Hyun-Joon Jun, Kwang Seok Lee, Uta Kühn, Jürgen Eckert, Young Won Chang,