Specimen-geometry effects on mechanical behavior of metallic glasses

Liu, F.X.; Liaw, Peter K.; Wang, G.Y.; Chiang, C.L.; Smith, Daryl A.; Rack, Philip D.; Chu, Jinn P.; Buchanan, R. A.

doi:10.1016/j.intermet.2006.01.043

Cited by 31 publications

(12 citation statements)

References 32 publications

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“…It was shown that fracture of bulk metallic glasses is very sensitive to macroscopic defects (likely pores and surface imperfections) which explains large scattering in the values of the percentage deformation changing from sample to sample [79]. One should also remember that the engineering plasticity of bulk metallic glasses depends upon their geometry and aspect ratio [80,81]. Different specimen geometries influence the shear-band formation and deformation processes, resulting in variations of mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Deformation Behavior of Bulk Metallic Glasses

Louzguine-Luzgin

Louzguina-Luzgina

Churyumov

2012

Metals

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Metallic glasses demonstrate unique properties, including large elastic limit and high strength, which make them attractive for practical applications. Unlike crystalline alloys, metallic glasses, in general, do not exhibit a strain hardening effect, while plastic deformation at room temperature is localized in narrow shear bands. Room-temperature mechanical properties and deformation behavior of bulk metallic glassy samples and the crystal-glassy composites are reviewed in the present paper.

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Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Deformation Behavior of Bulk Metallic Glasses

Louzguine-Luzgin

Louzguina-Luzgina

Churyumov

2012

Metals

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“…Также следует помнить, что пластичность ОМС зависит не только от абсолютного размера образ-ца, но и от геометрического соотношения ширины (или диаметра) к высоте [48,49], которое оказывает влияние на формирование полос сдвига и дефор-мационные процессы [50,51]. Образцы с соотно-шением высоты к диаметру ≤1 показывают высо-кую пластичность [27,52] образцов Zr-Ti-Ni-Cu-Be с надрезом при вве-дении усталостных трещин была значительно ни-же -18,4±1,4 МПа·√ -м [54].…”

Section: рис 2 схематическое изображение полос сдвигаunclassified

Properties of Bulk Metallic Glasses

Luzgin¹,

Polkin²

2016

Izv.VUZ. Tsvet. Met.

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Металловедение и термическая обработка Izvestiya vuzov. Tsvetnaya metallurgiya • 6 • 2016 71 ВведениеМеталлические стекла, получаемые в виде тон-ких чешуек или лент, известны со второй полови-ны прошлого века [1]. Объемные металлические стекла (ОМС) с минимальным размером порядка 100-102 мм в каждом из 3 пространственных из-мерений [2] изначально были получены в системах Pd-Cu-Si и Pd-Ni-P, но ввиду исключительной дороговизны основного компонента (палладия) долгое время не представляли особого интере-са для ученых и инженеров. Впоследствии ОМС, полученные во многих других системах, включая технологически важные -на основе Fe, Mg, Ti и За последние несколько десятилетий открыто относительно небольшое число революционных материалов в области ме-талловедения и физики металлов, и объемные металлические стекла одни из них. Их прочность и твердость значительно выше, а модуль упругости ниже, чем кристаллических сплавов, что приводит к высокой энергии запасенной упругой деформации. Эти материалы также имеют очень хорошую устойчивость к коррозии. В настоящей работе исследованы свойства объемных металлических стекол, в частности тепловые, механические, магнитные, электрические показатели и коррозионная стойкость, а также приводятся области применения данных сплавов. Louzguine-Luzgin D.V., Pol'kin V.I. Properties of bulk metallic glassesA relatively small number of revolutionary discoveries were made in the field of metallurgy and metal physics in the last few decades, and bulk metallic glasses are one of them. The strength and hardness of bulk metallic glasses are much higher while moduli of elasticity are lower than those of crystalline alloys which results in high stored elastic strain energy. These alloys also have very good corrosion resistance. This article covers various properties of bulk metallic glasses, in particular thermal, mechanical, magnetic, electrical properties and corrosion resistance as well as applications of these alloys.Keywords: bulk metallic glasses, strength, ductility, application.

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“…Although the literature is full of experimental and theoretical studies investigating the material behaviour under compressive and tensile loads along different material axes, few have addressed the size effect systemically [10]. Corresponding to this, specimen geometry effects on the mechanical properties of materials have been studied in metallic glasses [11]. It has been shown that the specimen geometry effects are closely related to the constraint of shear band processes and deforma-0932-0784 / 08 / 0700-0448 $ 06.00 c 2008 Verlag der Zeitschrift für Naturforschung, Tübingen · http://znaturforsch.com tion processes, resulting in various mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Specimen Geometry Effect on the Mechanical Properties of AISI 1040 Steel

Çalık

Şahin

Uçar

2008

Zeitschrift Für Naturforschung A

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The specimen geometry effect on some mechanical properties, such as tensile behaviour and hardness, of borided and unborided AISI 1040 steels was investigated. Boronizing of steels was performed by the powder pack method at 1210 K for 4 h. The specimen geometry and the boride layer thickness and hardness is similar for all tested boronized steels and independent of varying the shape of cross-sections. On the other hand, the ultimate tensile stress and elongation depend on the specimen geometry due to stress concentration at the corners of the specimen.

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Specimen-geometry effects on mechanical behavior of metallic glasses

Cited by 31 publications

References 32 publications

Mechanical Properties and Deformation Behavior of Bulk Metallic Glasses

Mechanical Properties and Deformation Behavior of Bulk Metallic Glasses

Properties of Bulk Metallic Glasses

Specimen Geometry Effect on the Mechanical Properties of AISI 1040 Steel

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