An in situ high-energy X-ray diffraction study of micromechanical behavior of Zr-based metallic glass reinforced porous W matrix composite

Ma, Luosheng; Wang, Lei; Xue, Yunfei; Wang, Y.D.; Li, N.; Ren, Yang; Zhang, H.F.; Wang, A.M.

doi:10.1016/j.msea.2011.09.094

Cited by 11 publications

(4 citation statements)

References 18 publications

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“…When external force was applied, the large rubber particles were more successful in initiating crazing, while the small rubber particles could only initiate or terminate the crazing when they produced the “cluster” structure. This indicates that for the low chain entanglement density of the matrix in the blends, the main deformation mechanism was crazing, which is consistent with the phenomenon described in this paper [ 43,44,45 ] . When the PPO content in the matrix increased to 20 wt.% (Figure 8c), the chain entanglement density of the matrix was further improved, and a large number of small crazes could still be observed.…”

Section: Resultssupporting

confidence: 90%

Effect of Entanglement Density on Mechanical Properties and the Deformation Mechanism of Rubber‐Modified PPO/PS Blends

Song

Ren

et al. 2022

Macro Materials & Eng

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This paper presents the synthesis of core-shell polybutadiene-graftpolystyrene (PB-g-PS) with a core-shell ratio of 70/30 in the copolymer. The polyphenylene oxide (PPO)/polystyrene (PS) alloy is toughened by high-impact polystyrene (HIPS) and the PB-g-PS copolymer. The effect of entanglement density on the mechanical properties and the deformation mechanism of the blends is investigated. The entanglement density of the blends is found to increase with increasing PPO content. The mechanical properties of the blends indicated that HIPS and PB-g-PS have excellent synergic toughening effects on the PPO/PS alloy, and the impact strength and elongation at break gradually increased with increasing matrix chain entanglement density. When the chain entanglement density of the matrix is low, the deformation mechanism of the blends is multiple crazing. As the chain entanglement density of the matrix increased, there are two deformation mechanisms in the blends at the same time: crazing and shear yield. However, the crazing disappeared when the chain entanglement density of the matrix reached a certain value, and only shear yield existed. Therefore, with the increase of matrix entanglement density in the blends, the deformation mechanism of the blends gradually transitioned from crazing to shear yield and cavitation, enhancing the toughness of the blends.

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Section: Resultssupporting

confidence: 90%

Effect of Entanglement Density on Mechanical Properties and the Deformation Mechanism of Rubber‐Modified PPO/PS Blends

Song

Ren

et al. 2022

Macro Materials & Eng

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“…High energy X-ray diffraction is well suited to the study of BMG's because of the high signal/background signal and both binary [113][114][115][116][117] and multicomponent [118,121] systems have been studied extensively using the HEXRD technique. Of particular interest has been structural ordering upon supercooling [119,120], thermal behavior [121,122], and correlating the mechanical or tensile behavior with local distortions in the local structure [123][124][125][126]. Attention has also been paid to their glass forming ability [127,128] and an important theme has been identifying structural heterogeneities in the deeply supercooled melt [129,130].…”

Section: Experiments On Glasses and Liquidsmentioning

confidence: 99%

A Review of High-Energy X-Ray Diffraction from Glasses and Liquids

Benmore

2012

ISRN Materials Science

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This paper summarizes the scientific trends associated with the rapid development of the technique of high-energy X-ray diffraction over the past decade pertaining to the field of liquids, glasses, and amorphous materials. The measurement of high-quality X-ray structure factors out to large momentum transfers leads to high-resolution pair distribution functions which can be directly compared to theory or combined with data from other experimental techniques. The advantages of combining highly penetrating radiation with low angle scattering are outlined together with the data analysis procedure and formalism. Also included are advances in high-energy synchrotron beamline instrumentation, sample environment equipment, and an overview of the role of simulation and modeling for interpreting data from disordered materials. Several examples of recent trends in glass and liquid research are described. Finally, directions for future research are considered within the context of past and current developments in the field.

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“…However, the calculation of x should base on the density of monolithic amorphous phase. Thus, we further calculate the density of amorphous phase in LT samples by using the rule of mixture as follows [20]:…”

Section: Resultsmentioning

confidence: 99%

Various Rejuvenation Behaviors of Zr-Based Metallic Glass by Cryogenic Cycling Treatment with Different Casting Temperatures

et al. 2018

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The rejuvenation behavior of an Zr50Cu40Al10 (at.%) metallic glass upon cryogenic cycling treatment has been investigated. At a high casting temperature, the microstructure of the glass is quite homogenous and thus, internal stress cannot be generated during cycling. Therefore, the glass cannot be rejuvenated by cryogenic cycling treatment. In the contrary, by lowering the casting temperature, nano-sized heterogeneity can be induced and subsequently generates the internal stress and rejuvenates the glass. Once the glass is rejuvenated, the more induced free volume can plasticize the glass with a higher plastic strain. These findings point out that the synthesis conditions can tailor the heterogeneity of the glass and subsequently affect the following rejuvenation behavior upon thermal treatment. It can also help understand the mechanisms of rejuvenation of metallic glass upon cryogenic cycling treatment.

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An in situ high-energy X-ray diffraction study of micromechanical behavior of Zr-based metallic glass reinforced porous W matrix composite

Cited by 11 publications

References 18 publications

Effect of Entanglement Density on Mechanical Properties and the Deformation Mechanism of Rubber‐Modified PPO/PS Blends

Effect of Entanglement Density on Mechanical Properties and the Deformation Mechanism of Rubber‐Modified PPO/PS Blends

A Review of High-Energy X-Ray Diffraction from Glasses and Liquids

Various Rejuvenation Behaviors of Zr-Based Metallic Glass by Cryogenic Cycling Treatment with Different Casting Temperatures

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