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论文类型：期刊论文

发表时间：2011-07-01

发表刊物：ADVANCED ENGINEERING MATERIALS

收录刊物：Scopus、SCIE、EI

卷号：13

期号：7,SI

页面范围：616-620

ISSN号：1438-1656

摘要：This manuscript gives the first results of an ongoing research project focusing on the crystallization processes of Zr(65)Al(7.5)Ni(10)Cu(17.5) (Z1) and Zr(58)Al(16)Ni(11)Cu(15) (Z2) bulk metallic glasses. Crystallization, induced by ball-milling and thermal annealing, has been observed and compared using differential scanning calorimetry, X-ray diffraction and Raman spectroscopy. The thermal crystallization end-products obtained for the two alloys were different: tetragonal Zr(2)Cu and hexagonal Zr(6)Al(2)Ni for Z1, while Z2 contained hexagonal Zr(2)Al, big cubic Zr(2)Ni and some alpha-Zr solid solution. For both alloys, the thermal crystallization products were different from those obtained after ball-milling. Interestingly, however, the stable phase obtained after sufficient mechanical milling was an FCC phase for both alloys. Raman spectroscopy suggests that nitrogen has an effect on the formation of this stable final product.