Journal ArticleDOI
Mechanical properties of quasicrystalline and crystalline phases in AlCuFe alloys
TLDR
In this article, the mechanical properties of icosahedral AlCuFe quasicrystals were compared with those of related crystalline intermetallic compounds by means of indentation and three-point bending techniques.Abstract:
Mechanical properties of icosahedral AlCuFe quasicrystals were investigated and compared with those of related crystalline intermetallic compounds by means of indentation and three-point bending techniques. Quasicrystalline phases possess high hardness (HV ≈ 1000) and high ability for elastic recovery (H/E > 0.08) but exhibit low toughness against unstable fracture (KIC ≈ 1 MPa m12). Icosahedral particles embedded in Al2Cu or in AlFe crystalline matrices lead to increasing resistance against subcritical crack propagation. In contrast to cleavage#1 fracture in crystalline Al13Fe4, the icosahedral quasicrystals exhibit a rough, quasicleavage#1 fracture surface. Evidences for plastic deformation in the quasicrystals were found and its mechanism is discussed.read more
Citations
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Micro- and nanoindentation techniques for mechanical characterisation of materials
TL;DR: Indentation techniques have been extensively used for mechanical characterisation of materials as discussed by the authors, which has further improved their utility for understanding the mechanical responses of solids at micro and nano scales.
Journal ArticleDOI
Pure Al matrix composites produced by vacuum hot pressing: tensile properties and strengthening mechanisms
TL;DR: Al matrix composites reinforced by spherical intermetallic particles, consolidated from gas atomized elemental Al and Al-Cu-Fe alloy fine powders, were consolidated in this paper.
Journal ArticleDOI
Highly active quasicrystalline Al-Cu-Fe catalyst for steam reforming of methanol
An Pang Tsai,M Yoshimura +1 more
TL;DR: In this paper, a stable AlCuFe quasicrystal has been used for steam reforming of methanol for the first time, achieving a production rate of 235 l/kg/min at 573 K.
Journal ArticleDOI
Phase formation at the interface between a boron alloyed steel substrate and an Al-rich coating
TL;DR: In this paper, Al-base coating (AlSi10Fe3) was applied to a steel substrate (22MnB5) by hot dipping, and phase formation at the steel/coating interface was investigated by means of ex-situ phase analysis with synchrotron radiation and EBSD.
Journal ArticleDOI
Laser techniques for dissimilar joining of aluminum alloys to steels: A critical review
Jin Yang,Viviana Scognamiglio,Corinne Hubinont,João Pedro Oliveira,Yulong Li,Caiwang Tan,Chenkai Gao,Yixuan Zhao,Zhishui Yu +8 more
TL;DR: In this paper, the authors provide a comprehensive and exhausting analysis of the recent achievements and progress on joining of Al alloys to steel by various laser-based joining processes, including laser keyhole welding, laser welding-brazing, laser-arc welding and laser roll pressure welding and joining based on laser additive manufacturing.
References
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Journal ArticleDOI
Evaluation ofKIc of brittle solids by the indentation method with low crack-to-indent ratios
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Elastic recovery at hardness indentations
Brian R. Lawn,V. R. Howes +1 more
TL;DR: In this paper, the mechanics of hardness indentation are considered and an expression for the relative depth recovery of the impression as a function of hardness/modulus, H/E, is derived.
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Quasicrystalline low-friction coatings
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Plastic Deformation of Al-Pd-Mn Icosahedral Quasicrystal
Shin Takeuchi,Tatsuo Hashimoto +1 more
TL;DR: In this paper, compressive experiments have been performed for coarse-grained Al72Pd20Mn8 icosahedral quasicrystals at high temperatures and the obtained results have been interpreted in terms of dislocation glide in quasICrystals.
Journal ArticleDOI
Mechanical properties of single-quasicrystalline AlCuCoSi
TL;DR: The mechanical properties of single-quasicrystals of decagonal AlCoCuSi have been studied for the first time by applying the Vickers indentation method as discussed by the authors.