Kim, YC Na, JH Park, JM Kim, DH Lee, JK Kim, WT 2024-01-21T08:06:29Z 2024-01-21T08:06:29Z 2021-09-03 2003-10-13 0003-6951 https://pubs.kist.re.kr/handle/201004/138145 The effect of the precipitation of nanosized quasicrystals on the mechanical properties of Ti-Zr-Cu-Ni-Be bulk metallic glasses (BMG) has been investigated. The Ti40Zr29Cu8Ni7Be16 BMG crystallizes by forming a few nanometer-size quasicrystals in the amorphous matrix, enabling the fabrication of quasicrystal-reinforced BMG matrix composites. Simultaneous improvement of strength and ductility can be obtained when 3-5-nm-size quasicrystals are isolated and homogeneously distributed in an amorphous matrix. The fracture strength and global strain, respectively, increase from 1921 MPa and 5.1% for as-cast BMG to 2084 MPa and 6.2% for partially crystallized BMG with the volume fraction of similar to7% quasicrystals. These improvements may be attributed to the structural similarity between quasicrystalline and amorphous phases. Stable low-energy interface between two phases may act as a source for multiple-shear-band formation. (C) 2003 American Institute of Physics. English AMER INST PHYSICS ICOSAHEDRAL PHASE-TRANSFORMATION AL-CU-V AMORPHOUS-ALLOYS HIGH-STRENGTH DUCTILITY KINETICS Role of nanometer-scale quasicrystals in improving the mechanical behavior of Ti-based bulk metallic glasses Article 10.1063/1.1616198 1 APPLIED PHYSICS LETTERS, v.83, no.15, pp.3093 - 3095 APPLIED PHYSICS LETTERS 83 15 3093 3095 scie scopus 000185832400035 2-s2.0-0242367500 Physics, Applied Physics Article ICOSAHEDRAL PHASE-TRANSFORMATION AL-CU-V AMORPHOUS-ALLOYS HIGH-STRENGTH DUCTILITY KINETICS