An in situ bulk Zr58Al9Ni9Cu14Nb10 quasicrystal-glass composite with superior room temperature mechanical properties

Qiang, Jianbing; Zhang, W.; Xie, Guoqiang; Kimura, Hisamichi; Chen, Dong; Inoue, Akihisa

doi:10.1016/j.intermet.2007.02.008

Cited by 20 publications

(10 citation statements)

References 24 publications

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“…The mechanical properties of the present alloys and some of previously reported nano-QC/glass composites are summarized in Table 2. 20,21,29,30,32) The yield strength in this work is almost the same or slightly lower than those of other QC/ glass composites with a high QC volume fraction, while the plastic strain is much improved compared with those in the previous studies. Considering that all the previous QC/glass composites with high QC volume fraction exhibit poor plasticity of less than 1% plastic strain and that little is known about the method of the improvement of plasticity in these QC/glass composites, the present results can be noted from the viewpoint of proposing new ductile BMG nanocomposites.…”

Section: Investigation Of Synergistic Effect Of In-situ Nano-qcsupporting

confidence: 46%

“…This, so far, has been established for the fabrication of QC/metallic-glass nanocomposites. 20,21,29,30) Considering that nanocrystals can also be precipitated dynamically upon deformation in the alloys with x ¼ 5{17:5, we can expect the synergistic effect of nano-QC precipitation and the deformation-induced nanocrystallization for the improvement of mechanical property in the alloy system.…”

Section: Mechanical Properties Of In-situ Nano-qc Formedmentioning

confidence: 99%

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Tailoring Thermally Induced Nano-Quasicrystallization and Deformation-Assisted Nanocrystallization for Mechanical Property Improvement in Zr-Al-Ni-Cu-Pd Bulk Metallic Glasses

et al. 2009

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The material design tailoring of a synergistic effect of an in-situ nano secondary phase formation and deformation-induced nanocrystallization for improving the mechanical strength and ductility, has been investigated in Zr 65 Al 7:5 Ni 10 Cu 17:5Àx Pd x bulk metallic glasses (BMGs). As-cast Zr 65 Al 7:5 Ni 10 Cu 17:5Àx Pd x (x ¼ 5{17:5) BMGs have significant ductility in compressive deformation, which is attributed to deformation-induced dynamic nanocrystallization. The 10 at% Pd-containing BMG with a low volume fraction of the quasicrystalline (QC) phase of less than 6% exhibits increases in strength and Young's modulus, in addition to a remaining plasticity of $5%, compared with the monolithic glassy alloy. Such improvements in the mechanical properties originate from the combination of two effects of in-situ homogeneous nano-QC formation and deformation-induced inhomogeneous nanocrystallization. The present method should be regarded as a new technique for the production of BMGs with high strength and good ductility.

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Section: Investigation Of Synergistic Effect Of In-situ Nano-qcsupporting

confidence: 46%

Section: Mechanical Properties Of In-situ Nano-qc Formedmentioning

confidence: 99%

Tailoring Thermally Induced Nano-Quasicrystallization and Deformation-Assisted Nanocrystallization for Mechanical Property Improvement in Zr-Al-Ni-Cu-Pd Bulk Metallic Glasses

et al. 2009

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“…Thus, conventionally solidified Al 63 Cu 25 Fe 12 alloy is identified to be brittle material at room temperature. This is also in good agreement with other results [23,24].…”

Section: Resultssupporting

confidence: 93%

Microstructures and mechanical properties of conventionally solidified Al63Cu25Fe12 alloy

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Tarakçı

2011

Journal of Alloys and Compounds

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“…At smaller values of δ H , the plasticity in tensile tests is δ = 0 or has a very low value. The plasticity characteristic δ H is fairly extensively used in works of different authors (e.g., [31][32][33]). …”

Section: Plasticity Characteristic δ H Determined By Indentationmentioning

confidence: 99%

Application of the Improved Inclusion Core Model of the Indentation Process for the Determination of Mechanical Properties of Materials

et al. 2017

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Abstract:The improved Johnson inclusion core model of indentation by conical and pyramidal indenters in which indenter is elastically deformed and a specimen is elastoplastically deformed under von Mises yield condition, was used for determination of mechanical properties of materials with different types of interatomic bond and different crystalline structures. This model enables us to determine approximately the Tabor parameter C = HM/Y S (where HM is the Meyer hardness and Y S is the yield stress of the specimen), size of the elastoplastic zone in the specimen, effective apex angle of the indenter under load, and effective angle of the indent after unloading. It was shown that the Tabor parameter and the size of elastoplastic deformation zone increase monotonically with the increase of the plasticity characteristic δ H , which is determined in indentation experiments using the early elaborated by the several authors of this article method. The corresponding analytical dependencies were obtained and their physical nature is discussed. For the materials studied in this work, the Tabor parameter ranges from 1 to 4. At the same time, for structural metallic alloys its value is between 2.8 and 3.1 in agreement with the results obtained by Tabor. A very simple technique developed in this article allows one to determine from the standard indentation test not only the hardness of a material but also its yield stress and plasticity. This makes the indentation test results significantly more informative.

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An in situ bulk Zr58Al9Ni9Cu14Nb10 quasicrystal-glass composite with superior room temperature mechanical properties

Cited by 20 publications

References 24 publications

Tailoring Thermally Induced Nano-Quasicrystallization and Deformation-Assisted Nanocrystallization for Mechanical Property Improvement in Zr-Al-Ni-Cu-Pd Bulk Metallic Glasses

Tailoring Thermally Induced Nano-Quasicrystallization and Deformation-Assisted Nanocrystallization for Mechanical Property Improvement in Zr-Al-Ni-Cu-Pd Bulk Metallic Glasses

Microstructures and mechanical properties of conventionally solidified Al63Cu25Fe12 alloy

Application of the Improved Inclusion Core Model of the Indentation Process for the Determination of Mechanical Properties of Materials

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