Effect of Hf substitution Cu on glass-forming ability, mechanical properties and corrosion resistance of Ni-free Zr-Ti-Cu-Al bulk metallic glasses

被引：38

作者：

Jin, Z. S. ^{[1
]}

Yang, Y. J. ^{[1
]}

Zhang, Z. P. ^{[1
]}

Ma, X. Z. ^{[1
,2
]}

Lv, J. W. ^{[1
]}

Wang, F. L. ^{[1
]}

Ma, M. Z. ^{[1
]}

Zhang, X. Y. ^{[1
]}

Liu, R. P. ^{[1
]}

机构：

[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdaom 066004, Peoples R China

[2] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 806卷

关键词：

Glass-forming ability; Substitution of Hf with Cu; Zr-based bulk metallic glasses; Mechanical properties; Corrosion behavior; SOLID-SOLUTION PHASE; SUPERCOOLED LIQUID; THERMAL-STABILITY; BEHAVIOR; PLASTICITY; FABRICATION; DIAMETER; NB; CRYSTALLIZATION; DECOMPOSITION;

D O I：

10.1016/j.jallcom.2019.07.240

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A series of Ni-free Zr55Ti3HfxCu32-xAl10 (x = 0, 1, 2, 3, 4, 5 at. %) bulk metallic glasses (BMGs) were developed by copper mold suction-casting. The effect of partially substituting Cu by Hf was investigated in terms of glass-forming ability (GFA), mechanical properties, and corrosion behavior. As a result of the partial substitution, the GFA of Hf-bearing amorphous alloys were significantly enhanced as compared to Zr55Ti3Cu32Al10 BMGs. Hf addition also enlarged the supercooled liquid region from 55 K to 70 K. The critical diameter was found to increase from 4mm to 8mm for x = 3. The corresponding compressive yield strength was over 1800 +/- 21 MPa with a large plastic strain above 2.60 +/- 0.10%. Electrochemical tests indicated that the lowest corrosion current density was 1.6 +/- 0.1 x 10(-8) A/cm(2) for the alloy with x = 5 in H2SO4 solution, thereby yielding a superior corrosion resistance. (C) 2019 Published by Elsevier B.V.

引用

页码：668 / 675

页数：8

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