Kim, YC Park, JM Lee, JK Bae, DH Kim, WT Kim, DH 2024-01-21T06:40:41Z 2024-01-21T06:40:41Z 2021-09-01 2004-07-15 0921-5093 https://pubs.kist.re.kr/handle/201004/137405 Crystallization behavior of melt-spun and injection cast Ti-Zr-Cu-Ni-Be alloys have been studied by using differential scanning calorimetry (DSC), X-ray diffractometry (XRD) and transmission electron microscopy (TEM). Ti40Zr28Cu9Ni7Be16 and Ti34Zr31Cu10Ni8Be17 amorphous alloys crystallized through a two step process during heating: Nanoscaled primary I-phase precipitated from an amorphous matrix first and the remaining amorphous phase crystallized into the cubic beta-Ti(Zr) phase for Ti40Zr28Cu9Ni7Be16 alloy and to hexagonal Laves phase for Ti34Zr31Cu10Ni8Be17 alloy. The I-phase is stable at lower temperature and transforms into a Laves phase at high temperature through an endothermic reaction. Reversible transformation between the I-phase and Laves phase takes place during cyclic heating and cooling. In-situ composites consisting of I-phase embedded in an amorphous matrix can be fabricated by either heat treatment of fully amorphous phase or by controlling cooling rate during solidification. At lower cooling rate, I-phase forms as primary crystal in undercooled liquid and remaining liquid solidified into a glass. (C) 2003 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA QUASI-CRYSTALLINE SUPERCOOLED LIQUID METALLIC-GLASS Amorphous and icosahedral phases in Ti-Zr-Cu-Ni-Be alloys Article 10.1016/j.msea.2003.10.116 1 MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v.375, pp.749 - 753 MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 375 749 753 scie scopus 000223329700141 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Science & Technology - Other Topics Materials Science Metallurgy & Metallurgical Engineering Article; Proceedings Paper QUASI-CRYSTALLINE SUPERCOOLED LIQUID METALLIC-GLASS Ti-based bulk metallic glass icosahedral phase composites crystallization