Formation of nanocrystals in Ti78Fe15Si7 amorphous alloy with a wide supercooled liquid region

被引：2
|
作者：
Kim, KB
Ko, BC
Pak, SJ
机构：
[1] Univ Oxford, Dept Mat, Oxford OX1 3PH, England
[2] Inha Univ, Sch Mat Sci & Engn, Inchon 402751, South Korea
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2004年 / 366卷 / 02期
关键词：
supercooled liquid; primary crystallization; tensile fracture strength;
D O I：
10.1016/j.msea.2003.08.026
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
An as-quenched amorphous Ti78Fe15Si7 alloy with a large supercooled liquid region (61 K) was investigated using X-ray diffraction, differential scanning and transmission electron microscopy (TEM). This amorphous alloy transforms into primary nano-sized beta-Ti phase particles (<20 nm) of spherical shape upon a first exothermic reaction. The remaining amorphous phase transforms to the Ti2Fe phase followed by the Ti5Si3 phase upon the second and third exothermic reaction. The tensile fracture strength was 1318 MPa for the amorphous alloy and increased up to 1876 MPa for a volume fraction of 15% primary beta-Ti phase. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：421 / 425
页数：5
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