Synthesis of Highly Amorphous Fe70Ti2Y6B22 Bulk Alloy with Excellent Thermal Stability by Isothermal Compression under High Pressure

被引：0

作者：

Wang, Chuqi ^{[1
]}

Jiang, Bo ^{[1
]}

Qin, Yulin ^{[1
]}

Peng, Bo ^{[1
]}

Tang, Yue ^{[1
]}

Guan, Shixue ^{[1
]}

Wang, Junpu ^{[1
]}

Zhao, Mengxi ^{[1
]}

Zhang, Lu ^{[1
]}

Kou, Zili ^{[1
]}

机构：

[1] Sichuan Univ, Inst Atom & Mol Phys, Chengdu 610065, Peoples R China

来源：

CRYSTAL GROWTH & DESIGN | 2022年 / 22卷 / 04期

基金：

中国国家自然科学基金;

关键词：

METALLIC GLASSES; INDUCED AMORPHIZATION; MAGNETIC-PROPERTIES; FABRICATION; NITRIDE; LIQUID;

D O I：

10.1021/acs.cgd.1c01501

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A highly amorphous Fe70Ti2Y6B22 bulk alloy, with a diameter of 3 mm and a height of 2 mm, was synthesized by applying isothermal compression from 10 to 15 GPa at 1473 K using mixed metal powder. The structural analyses by performing X-ray diffraction and transmission electron microscopy revealed that the alloy was composed of a glassy structure. According to the differential scanning calorimetry analysis, a large supercooled liquid region (Delta T-x) of approximately 550 K was obtained, which is caused by the highly densely packed structures of a highly amorphous Fe70Ti2Y6B22 bulk alloy. The value was six times the value obtained by rapid cooling. Also, the Vickers hardness of the sample was approximately 8.5 GPa at a loading force of 29.4 N. These results indicated that isothermal compression under high pressure is a feasible method for fabricating bulk metallic glasses satisfying large-size requirements.

引用

页码：2426 / 2432

页数：7

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