کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9796370 | 1514945 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of annealing on the mechanical properties of Zr-based bulk metallic glass for use in die applications
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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 effect of annealing treatment on the in-situ hardness of Zr-based bulk metallic glass (Zr41-Ti14-Cu13-Ni10-Be22 at.%) was investigated. The compressive fracture strength and Vickers hardness of a Zr-based metallic glass after heat treatment were measured at room temperature. The in-situ hardness was 579Â Hv at room temperature and decreased slightly to 573Â K, and approached zero at 673Â K. The compressive strength for samples annealed around 673Â K, the volume fraction of crystalline phases of 7%, provided a compressive strength around 2000Â MPa, a slightly larger value than that of fully amorphous alloys. For the annealed alloys, the compressive fracture strength and Vickers hardness showed an inversely proportional relationship with increasing crystallinity of the samples. Based on these findings, we conclude that the optimum processing temperature of Zr-based metallic glass for near-net shape deformation and micro-die applications is limited to a narrow temperature range from 673 to 723Â K, characterized by a low fabrication load and relatively high fracture strength after the shaping process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 396, Issues 1â2, 15 April 2005, Pages 423-428
Journal: Materials Science and Engineering: A - Volume 396, Issues 1â2, 15 April 2005, Pages 423-428
نویسندگان
J.J. Chang, K.M. Cho, W.S. Chung, K.H. Kim, U.C. Chung, J.H. Park, Y.R. Cho,