Influence of Cold Rolling Process and Chemical Composition on the Mechanical Properties and Corrosion Behavior of Zr-Based Metallic Glasses

被引：7
作者：
Akbarpour, Ali [1 ]
Milkova, Daria A. [1 ]
Zanaeva, Erzhena N. [1 ]
Parkhomenko, Mark S. [1 ]
Cheverikin, Vladimir V. [1 ]
Lubenchenko, Alexander [2 ]
Bazlov, Andrey, I [1 ,3 ]
机构：
[1] Natl Univ Sci & Technol MISiS, Dept Phys Met Nonferrous Met, Moscow 119049, Russia
[2] Natl Res Univ MPEI, Dept Gen Phys & Nucl Fus, Krasnokazarmennaya 14, Moscow 111250, Russia
[3] St Petersburg State Univ, Res Lab Mech Adv Bulk Nanomat Innovat Engn Applic, St Petersburg 199034, Russia
来源：
METALS | 2021年 / 11卷 / 10期
关键词：
Zr-based metallic glass; amorphous material; cold rolling; shear band; corrosion; native surface oxide; FREE-VOLUME; SHEAR BANDS; STRUCTURAL RELAXATION; PITTING CORROSION; EVOLUTION; ALLOYS; NB; DEFORMATION; RESISTANCE; HARDNESS;
D O I：
10.3390/met11101514
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cold rolling (CR) with thickness reduction of 10%, 30%, and 50% was applied to Zr50Cu44Al6 and Zr49.5Cu44Al6Nb0.5 metallic glassy ribbon samples. The XRD patterns showed the amorphousness of all samples after casting and CR processes. The SEM images indicated the formation of multiple shear bands (SBs) owing to plastic deformation during CR. However, the addition of 0.5 at% Nb to the alloy changed the SBs' density and spacing characteristics. The characterization of free volume changes caused by CR was carried out by measuring the density of Archimedes. The micro-hardness of samples was studied by investigating SBs and free volume during plastic deformation. Alloy softening occurred due to the formation of free volume during CR. X-ray photoelectron spectroscopy (XPS) confirmed the presence of oxides ZrO2, CuOx, and AlOx on the surface of the ribbons. The anodic polarization curves of the cast and R50 samples in solutions of NaCl and Na2SO4 (0.5 M) were obtained using potentiodynamic polarization measurements. Compared to CR ribbons, melt-spun ribbons after casting showed better corrosion resistance with lower anodic current densities in Na2SO4 solution.
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页数：14
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