Synthesis and characterization of Zr-based in situ crystal precipitated and liquid phase separated bulk metallic glass composite

被引：6

作者：

Czel, Gyorgy ^{[1
]}

Tomolya, Kinga ^{[2
]}

Sveda, Maria ^{[2
]}

Sycheva, Anna ^{[2
]}

Kristaly, Ferenc ^{[3
]}

Roosz, Andras ^{[2
]}

Janovszky, Dora ^{[2
]}

机构：

[1] Univ Miskolc, Inst Ceram & Polymer Engn, Miskolc, Hungary

[2] MTA ME Mat Sci Res Grp, Miskolc, Hungary

[3] Univ Miskolc, Inst Mineral & Geol, Miskolc, Hungary

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2017年 / 458卷

关键词：

Metallic glasses; Immiscible alloy; Metal matrix composite; Mechanical properties; Microstructure; Fracture; MECHANICAL-PROPERTIES; SUPERCOOLED LIQUID; THERMAL-STABILITY; MATRIX COMPOSITES; AMORPHOUS-ALLOYS; FORMING ABILITY; AL; BEHAVIOR; NI; MICROSTRUCTURE;

D O I：

10.1016/j.jnoncrysol.2016.12.017

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The aim of this study was to evaluate new Zr-based bulk metallic composites with crystallized dendrites or droplets which have the volume fraction below the critical one (the percolation limit). The Cu36Zr48A18Ag8 alloy was chosen as matrix. Dendrites formed by in-situ solidification due to Ni addition. It was found that a new monotectic alloy system can be created successfully owing to Y addition (1-7 at.%) to the matrix. Small amount of dendrites with non-random distribution has a strong influence on the compressive strength. Experiment showed that the alloy with 4.1 at.% Ni has the maximum compressive strength (1998 MPa) and Young's modulus (86 GPa) within the examined samples. The results of compression test reveal that the cracks propagate near the small droplets below 1 mu m in diameter which generate weakening in the microstructure. In contrast, the large droplets especially above 3 pm in diameter create a strong barrier for the shear band propagation. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：41 / 51

页数：11

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