Micromechanical response for the amorphous/amorphous nanolaminates

Kuan, S.Y.; Chou, H.S.; Liu, M.C.; Du, X.H.; Huang, J.C.

doi:10.1016/j.intermet.2010.09.001

Cited by 36 publications

(6 citation statements)

References 32 publications

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“…There are attempts to enhance the plastic deformation in these materials by forming heterogeneous microstructures of amorphous-amorphous [1][2][3][4][5][6][7][8] and amorphous-crystalline [9][10][11][12][13][14][15] composites. The majority of amorphous alloys are multi-component, and glass-forming generally requires high concentrations of alloying additions.…”

Section: Introductionmentioning

confidence: 99%

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AMORPHOUS/CRYSTALLINE DUCTILE LIQUID IMMISCIBLE Fe-Si-B-In ALLOY PRODUCED BY TWO-COMPONENT MELT-SPINNING

Ziewiec

Wojciechowska

Mucha

et al. 2017

mafe

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Microstructure and mechanical properties of amorphous/crystalline ductile liquid immiscible Fe-Si-B-In alloy produced by two-component melt-spinning Mikrostruktura i właściwości mechaniczne ciągliwego stopu amorficzno-krystalicznego na osnowie Fe-Si-B-In wytworzonego przez odlewanie na wirujący walec z tygla dzielonego AbstractThe two-component melt-spun (TCMS) Fe 71.25 Si 9.5 B 14.25 In 5 alloy was produced from Fe 75 Si 10 B 15 and Fe 67.5 Si 9 B 13.5 In 10 alloys. The microstructure of the TCMS alloy was investigated by means of scanning electron microscopy (SEM) and X-ray diffraction (XRD). A tensile test of the alloy resulted in a tensile strength of R m = 1040 MPa, yield strength R e = 919 MPa, total plastic elongation e tot = 3.29%, and traces of plastic deformation on the surface of the Fe-Si-B-In TCMS sample. Microstructural analysis of the amorphous/crystalline composite and tensile sample free surface show the reason for the ductility of the sample in relation to the Fe 75 Si 10 B 15 alloy. Keywords: metallic glasses, X-ray diffraction (XRD), scanning electron microscopy (SEM), tensile test, ductility

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Section: Introductionmentioning

confidence: 99%

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AMORPHOUS/CRYSTALLINE DUCTILE LIQUID IMMISCIBLE Fe-Si-B-In ALLOY PRODUCED BY TWO-COMPONENT MELT-SPINNING

Ziewiec

Wojciechowska

Mucha

et al. 2017

mafe

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“…The very thin hard layer of 200 nm might be subjected to scratch or plastic deformation damage. Our parallel studies (Liu et al, 2009;Kuan et al, 2010;Chou et al, 2011;Pei et al, 2011) suggest that a multilayered composite coating, with alternative metallic glass and pure metal layers, would be much more promising than one thin layer of monolithic metallic glass. Each individual metallic glass and pure metal layer thickness would still be around 200 nm, but the overall multilayered composite coating could be on a scale of several micrometers.…”

Section: Resultsmentioning

confidence: 95%

Coating behavior and surface hardening of Pd77Cu6Si17 thin film metallic glass on AZ31 magnesium alloy

Chang

Pei

et al. 2013

J. Zhejiang Univ. Sci. A

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Pd 77 Cu 6 Si 17 (PCS) thin film metallic glasses (TFMGs) with high glass forming ability and hardness were selected as a hard coating for improving the surface hardness of AZ31 magnesium alloy. Both microindentation and nanoindentation tests were conducted on specimens with various PCS film thicknesses from 30 to 2000 nm. The apparent hardness and the relative indentation depth (β) were integrated using a quantitative model. The interaction parameters involved and relative hardness values were extracted from iterative calculations. According to the results, surface hardness can be enhanced greatly by PCS TFMGs in the shallow region, followed by gradual decrease with increasing β ratio. In addition, specimens with thinner coatings (e.g., 200 nm) showed greater substrate-film interaction and those with thick coatings (e.g., 2000 nm) became prone to film cracking. The optimum TFMG coating thickness in this study was estimated to be around 200 nm.

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“…However, the formation of mature SBs needs to penetrate many interfaces, which greatly increases the resistance to the propagation of the SBs [ 55 ]. When the penetration of STZs is obstructed, they may first deviate along the direction of A/A interfaces, and then penetrate in some relatively weak areas [ 66 ]. In this case, the mature SBs can also be formed in NLGs with smaller layer thickness.…”

Section: Resultsmentioning

confidence: 99%

Quantifying the Size-Dependent Shear Banding Behavior in High-Entropy Alloy-Based Nanolayered Glass

Dai,

Zhang,

et al. 2024

Nanomaterials

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Extensive research has shown that nanolayered structures are capable of suppressing the shear banding in metallic glass in nanoindentation experiments. However, the specific mode and mechanism of the shear banding underneath the indenter remains unknown. Also, the quantification of shear banding-induced strain localization is still a challenge. Herein, the size-dependent shear banding behavior of a CuTiZrNb high-entropy alloy-based nanolayered glass with individual layer thicknesses (h) ranging from 5 to 80 nm was systematically investigated by nanoindentation tests. It was found that the hardness of the designed structure was almost size-independent. Yet, a clear transition in the deformation modes from the cutting-like shear bands to the kinking-like ones was discovered as h decreased to 10 nm. Moreover, multiple secondary shear bands also appeared, in addition to the primary ones, in the sample with h = 10 nm. The transition leads to an obvious strain delocalization, as clearly illustrated by the proposed theoretical model, which is based on the assumption of a pure shear stress state to quantify the shear banding-induced strain localization. The strain delocalization results from the higher density of amorphous/amorphous interfaces that exhibit the change in morphology with a refined layered glass structure.

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Micromechanical response for the amorphous/amorphous nanolaminates

Cited by 36 publications

References 32 publications

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AMORPHOUS/CRYSTALLINE DUCTILE LIQUID IMMISCIBLE Fe-Si-B-In ALLOY PRODUCED BY TWO-COMPONENT MELT-SPINNING

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AMORPHOUS/CRYSTALLINE DUCTILE LIQUID IMMISCIBLE Fe-Si-B-In ALLOY PRODUCED BY TWO-COMPONENT MELT-SPINNING

Coating behavior and surface hardening of Pd77Cu6Si17 thin film metallic glass on AZ31 magnesium alloy

Quantifying the Size-Dependent Shear Banding Behavior in High-Entropy Alloy-Based Nanolayered Glass

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