Hugoniot-compression curve of Zr-based bulk metallic glass

Mashimo, Tsutomu; Togo, H.; Zhang, Y.; Uemura, Yuji; Kinoshita, Takehiko; Kodama, Masao; Kawamura, Yoshihito

doi:10.1063/1.2403931

Cited by 28 publications

(20 citation statements)

References 15 publications

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“…In the study by Turneaure et al, [12] Zr 56.7 Cu 15.3 Ni 12.5 Nb 5 Al 10 Y 0.5 was determined to have an HEL of 7.1 ± 0.3 GPa, corresponding to an elastic strain of~4 pct. Mashimo et al [23] observed a kink in the streak camera images corresponding to an HEL of 6.2 GPa in Zr 55 Al 10 Ni 5-Cu 30 BMG. Experiments performed at a peak stress exceeding the HEL yielded a two-wave structure consisting of an elastic precursor and a plastic wave, irrespective of whether the experiments were instrumented with VISAR or streak photography.…”

Section: Introductionmentioning

confidence: 97%

“…The compression behavior of Zr 44 Nb 7 Cu 13.5 Ni 10.8 Be 24.3 has been investigated by Gong et al [22] using high-stress energy-dispersive X-ray diffraction with a synchrotron radiation source coupled with calculations of the radial distribution function at stresses up to 39 GPa. Mashimo et al [23] recently investigated the Hugoniot compression curve of Zr 55 Al 10 Ni 5 Cu 30 up to stresses of 50 GPa using the inclined mirror (IM) technique. This study by Mashimo et al [23] revealed a kink in the U s -U p data at approximately 14 GPa, which was attributed to a probable phase transition.…”

Section: Introductionmentioning

confidence: 99%

“…Mashimo et al [23] recently investigated the Hugoniot compression curve of Zr 55 Al 10 Ni 5 Cu 30 up to stresses of 50 GPa using the inclined mirror (IM) technique. This study by Mashimo et al [23] revealed a kink in the U s -U p data at approximately 14 GPa, which was attributed to a probable phase transition.…”

Section: Introductionmentioning

confidence: 99%

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High-Pressure Equation of the State of a Zirconium-Based Bulk Metallic Glass

Martin

Sekine

Kobayashi

et al. 2007

Metall Mater Trans A

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The high stress U s -U p Hugoniot equation of state (EOS) of a zirconium-based bulk metallic glass (BMG, Zr 57 Nb 5 Cu 15.4 Ni 12.6 Al 10 ) was determined using plate impact experiments on diskshaped samples of 10-mm diameter and 2-mm thickness. The National Institute for Materials Science (NIMS) two-stage light-gas gun was used for the high stress measurements (~26 to 123 GPa), and the Georgia Institute of Technology (GT) single-stage gas gun was used for the lower stress measurements (~5 to 26 GPa). The NIMS experiments were instrumented with streak photography and used the inclined mirror (IM) method to simultaneously measure shock velocity and free surface velocity. The GT experiments used polyvinylidene fluoride (PVDF) stress gages and velocity interferometry (VISAR) to simultaneously measure the shock velocity, free surface velocity, and stress. Results from the streak camera records and PVDF gages + VISAR traces, as well as impedance matching calculations, were used to generate the U s -U p Hugoniot EOS for the BMG over a wide range of stresses. The U s -U p data show evidence of a low pressure phase, a transition to a mixed phase region at~26 GPa, followed by transition at~67 GPa to a high-pressure phase of bulk modulus of 288 GPa.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

High-Pressure Equation of the State of a Zirconium-Based Bulk Metallic Glass

Martin

Sekine

Kobayashi

et al. 2007

Metall Mater Trans A

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“…They discovered that behind Hugoniot Elastic Limit(HEL), a concave curvature suggesting a phase-change-like transition appears on the Hugoniot curve of Vit-1 and the HEL of Vit-1 and β -Vit are about 10MPa ∼ 100MPa. T.Mashimo 6 and H.Togo 7 performed shock experiments with inclined-mirror photographic technique on Zr 55 Al 10 Ni 5 Cu 30 BMG to peak stress 45GPa, kink was observed at 14GPa in the shock velocity(Us) versus particle velocity(Up) curve, and the HEL of Zr 55 Al 10 exhibits good linearity in shock pressure from 18GPa to 110GPa, with HEL from 6.9GPa to 9.6GPa.…”

Section: Introductionmentioning

confidence: 99%

Dynamic behaviors of a Zr-based bulk metallic glass under ramp wave and shock wave loading

et al. 2015

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Dynamic behaviors of Zr51Ti5Ni10Cu25Al9 bulk metallic glass were investigated using electric gun and magnetically driven isentropic compression device which provide shock and ramp wave loading respectively. Double-wave structure was observed under shock compression while three-wave structure was observed under ramp compression in 0 ∼ 18GPa. The HEL of Zr51Ti5Ni10Cu25Al9 is 8.97 ± 0.61GPa and IEL is 8.8 ± 0.3GPa, respectively. Strength of Zr51Ti5Ni10Cu25Al9 estimated from HEL is 5.0 ± 0.3GPa while the strength estimated from IEL is 3.6 ± 0.1GPa. Shock wave velocity versus particle velocity curve of Zr51Ti5Ni10Cu25Al9 under shock compression appears to be bilinear and a kink appears at about 18GPa. The Lagrangian sound speed versus particle velocity curve of Zr51Ti5Ni10Cu25Al9 under ramp wave compression exhibits two discontinuances and are divided to three regions: elastic, plastic-I and plastic-II. The first jump-down occurs at elastic-plastic transition and the second appears at about 17GPa. In elastic and plastic-I regions, Lagrangian sound speed increases linearly with particle velocity, respectively. Characteristic response of sound speed in plastic-I region disagree with shock result in the same pressure region(7GPa ∼ 18GPa), but is consistent with shock result at higher pressure(18-110GPa).

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“…[22,24] There are similar mechanical hints for the initiation of plastic deformation during high pressure, high strain rate, and short duration. Turneaure et al [18] and Yuan et al [19] observed an obvious load drop in the Hugoniotcompression curves in plate impact experiments. It is speculated that the APSs could be activated simultaneously when the stress exceeds the HEL of BMGs, which causes the instantaneous stress relaxation in the Hugoniot-compression curves.…”

mentioning

confidence: 99%

A Novel Micro-Scale Plastic Deformation Feature on a Bulk Metallic Glass Surface under Laser Shock Peening

Yan¹,

Wei²,

Wang³

et al. 2013

Chinese Phys. Lett.

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Laser shocking peening is a widely applied surface treatment technique that can effectively improve the fatigue properties of metal parts. We observe many micro-scale arc plastic steps on the surface of Zr47.9Ti0.3Ni3.1Cu39.3Al9.4 metallic glass subjected to the ultra-high pressure and strain rate induced by laser shock peening. The scanning electronic microscopy and atomic force microscopy show that the arc plastic step (APS) has an arc boundary, 50-300 nm step height, 5-50 m radius and no preferable direction. These APSs have the ability to accommodate plastic deformation in the same way as shear band. This may indicate a new mechanism to accommodate the plastic deformation in amorphous metallic glass under high pressure, ultra-high strain rates, and short duration. As one of the most promising structural materials, bulk metallic glasses (BMGs) have drawn much attention due to their unique properties such as high strength/weight ratio and large elastic deformation capability. PACS[1−3] Recently, in order to improve the performance in specific application areas, several surface modification methods have been applied on BMGs. For example, sand blasting [4] is used to improve the wettability of BMG for biomedical applications. Laser melting is utilized to induce residual stress [5] or to form nano-crystals [6] in a subsurface to improve the mechanical properties. Zhang et al. [7] successfully treated a BMG's surface with shot peening to generate a ∼80-µm-thick affected zone which contained many slight shear bands. It is speculated that these pre-existing shear bands are favored locations for resumed plastic flow, so that the plasticity is increased while fewer main shear bands are generated. Similar to but having more advantages over shot peening, laser shock peening (LSP) [8] has been widely used to improve wear resistance and fatigue performance in the metallic components of bulk materials. In the LSP process, a shock wave is generated and propagates into the target through the interaction of a pulsed high-intensity laser beam and absorption layer on the metallic target surface. If the amplitude of the shock wave exceeds the Hugoniot elastic limit (HEL) of the target material, plastic deformation occurs and residual compressive stresses are induced near the material surface, resulting in the enhancement of fatigue life. Since the beam size could be easily adjusted, a localized micro-scale peening technique [9] has been developed and applied on the metal films in the semiconductor industry. In addition, LSP is suitable in processing materials with complex structural geometry by manipulating laser beams and utilizing liquid confining media like water.[10] To our knowledge, LSP processing on BMGs is rarely reported. In this Letter, we report a novel micro-scale plastic deformation feature observed on the surface of Zr-BMG treated by LSP.A Zr 47.9 Ti 0.3 Ni 3.1 Cu 39.3 Al 9.4 BMG rod in diameter 5 mm was prepared by melting a mixture of elemental metals with purities ranging from 99.5% to 99.99% in an argon atmosph...

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Hugoniot-compression curve of Zr-based bulk metallic glass

Abstract: Articles you may be interested inMechanical relaxation in a Zr-based bulk metallic glass: Analysis based on physical models J. Appl. Phys. 112, 033518 (2012); 10.1063/1.4745019 Shock compression response of a Zr-based bulk metallic glass up to 110 GPa

Cited by 28 publications

References 15 publications

High-Pressure Equation of the State of a Zirconium-Based Bulk Metallic Glass

High-Pressure Equation of the State of a Zirconium-Based Bulk Metallic Glass

Dynamic behaviors of a Zr-based bulk metallic glass under ramp wave and shock wave loading

A Novel Micro-Scale Plastic Deformation Feature on a Bulk Metallic Glass Surface under Laser Shock Peening

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