Glass formation, corrosion behavior, and mechanical properties of novel Cr-rich Cr-Fe-Mo-C-B-Y bulk metallic glasses

被引：41

作者：

Xu, Tao ^{[1
]}

Pang, Shujie ^{[1
]}

Zhang, Tao ^{[1
]}

机构：

[1] Beihang Univ, Key Lab Aerosp Mat & Performance, Minist Educ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 625卷

基金：

中国国家自然科学基金;

关键词：

Chromium alloy; Bulk metallic glass; Glass-forming ability; Corrosion; Mechanical properties; Elastic properties; FORMING ABILITY; ALLOYS; RESISTANCE;

D O I：

10.1016/j.jallcom.2014.09.166

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：

The glass formation, corrosion behavior, and mechanical properties of novel Cr-rich CrxFe58.8-xMo14.7 C14.7B9.8Y2 (x = 29.4, 36.75, and 44.1 at.%) bulk metallic glasses (BMGs) were evaluated. It is found that the critical diameter for glass formation and supercooled liquid region remarkably decrease from 3 mm to 1 mm and 68 K to 79 K, respectively, with the increase in Cr content. Compared with SUS316 stainless steel, those BMGs exhibit more excellent corrosion resistance in 1 M HCl solution. However, the corrosion resistance is not significantly improved with increasing Cr content, which may imply that the threshold value of Cr content to efficiently achieve high corrosion resistance for the present alloy system is around 29.4 at.%. In addition, the fracture strength, Vickers microhardness, Young's modulus, shear modulus, and the ratio of hardness to elastic modulus for the present BMGs are up to 4.31 GPa, 14.15 GPa, 249 GPa, 95 GPa, and 0.057, respectively. (C) 2014 Elsevier B. V. All rights reserved.

引用

页码：318 / 322

页数：5

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