Mechanical properties and determination of slip systems of the B2 YZn intermetallic compound

Cao, Guanghui; Becker, A.T.; Wu, Dongmei; Chumbley, L.S.; Lograsso, Thomas A.; Russell, Alan M.; Gschneidner, K.A.

doi:10.1016/j.actamat.2010.04.024

Cited by 15 publications

(6 citation statements)

References 20 publications

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“…Otherwise, the materials are expected to deform in a ductile manner with a low G/B value. This relation has been extensively accepted and applied not only to metal but also to high-strength materials [25,26,27]. In principles, the covalent materials (such as diamond and c-BN) have the highest hardness but they are obviously brittle with a larger Pugh modulus ratio.…”

Section: Model and Resultsmentioning

confidence: 99%

Modeling hardness of polycrystalline materials and bulk metallic glasses

et al. 2011

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Though extensively studied, hardness, defined as the resistance of a material to deformation, still remains a challenging issue for a formal theoretical description due to its inherent mechanical complexity. The widely applied Teter's empirical correlation between hardness and shear modulus has been considered to be not always valid for a large variety of materials. Here, inspired by the classical work on Pugh's modulus ratio, we develop a theoretical model which establishes a robust correlation between hardness and elasticity for a wide class of materials, including bulk metallic glasses, with results in very good agreement with experiment. The simplified form of our model also provides an unambiguous theoretical evidence for Teter's empirical correlation.

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Section: Model and Resultsmentioning

confidence: 99%

Modeling hardness of polycrystalline materials and bulk metallic glasses

et al. 2011

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“…4) Different slip directions in isostructural B2 alloys, the dislocation mobility, and related ductility/brittleness are in general a complex problem [23]. It was generally shown that an interplay of elastic anisotropy of these cubic materials, displacement vectors of metastable planar faults and their energies govern the choice of the activated slip directions [23,24].…”

Section: Discussionmentioning

confidence: 99%

High Plasticity of an Iron Aluminide-based Material at Low Temperatures

Šı́ma¹,

Minárik

Cieslar

et al. 2018

PSIJ

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Aims: To compare surprisingly high plasticity in compression at low temperature of high-quality compacts prepared by spark plasma sintering from atomized Fe-30.8Al-0.35Zr-0.11B (at%) powder with tensile tests at the same conditions. Study Design: Compressive tests and tensile tests at room temperature and at 77 K, scanning and transmission electron microscopy, measurements of Young's and shear moduli data of the sintered material from room temperature to 80 K.

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“…In Zr50Co39Ni11 alloy the lenticular B33 martensites having lattice parameters The previous worksPrevious research has have shown that the dominate dominant slip systems in RM intermetallic compounds are {110}<001> and {100}<001>. The {110}<111> slip was also found to be active in DyCu, YAg, and YCu [8][9][10][11][12][13]. Based on the criterion of von Mises for generalized plastic deformation of a polycrystalline aggregate, the <001> dislocation slip can only provide onlys three independent slip systems, and the operation of <111> dislocations will satisfy the necessary von Mises requirement of five independent slip systems [14].…”

Section: Discussionmentioning

confidence: 99%

“…The operative slip systems determined by slip trace measurements are {110}<001> and {100}<001> for YAg, YCu, YZn, and DyCu, and {110}<111> for YAg and DyCu [8,9,12,13].…”

Section: Introductionmentioning

confidence: 99%

TEM study of the martensitic phases in the ductile DyCu and YCu intermetallic compounds

et al. 2017

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DyCu and YCu are representatives of the family of CsCI-type B2 rare earth intermetallic compounds that exhibit high room temperature ductility. Structure, orientation relationship, and morphology of the martensites in the equiatomic compounds DyCu and YCu are examined using transmission electron microscopy (TEM). TEM studies show that the martensite structures in DyCu and YCu alloys are virtually identical. The martensite is of orthorhombic CrB-type B33 structure with lattice parameters a = 0.

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Mechanical properties and determination of slip systems of the B2 YZn intermetallic compound

Cited by 15 publications

References 20 publications

Modeling hardness of polycrystalline materials and bulk metallic glasses

Modeling hardness of polycrystalline materials and bulk metallic glasses

High Plasticity of an Iron Aluminide-based Material at Low Temperatures

TEM study of the martensitic phases in the ductile DyCu and YCu intermetallic compounds

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