Unidirectional solidification of monovariant CuNiMg eutectic alloys II. Microstructures and properties

Fehrenbach, P.J.; Kerr, H. W.; Niessen, P.

doi:10.1016/0022-0248(73)90193-0

Cited by 13 publications

(3 citation statements)

References 12 publications

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“…Reports of improved ductility or deformation in Laves phases alloyed with a third element include Ni added to MgCu 2 [5]; Mo to SmFe 2 [6]; Ti [7], V, or Mo [8] to NbCr 2 ; and Ti or Nb to HfV 2 [2,9]. The enhanced deformability demonstrated by HfV 2 with Nb additions has been proposed to be due to the alloying element residing on both the Hf and V sublattices, thereby 'opening up' the close-packed structure for easier atomic movements in the synchroshear mechanism [2,10].…”

Section: Introductionmentioning

confidence: 99%

Factors affecting the room-temperature mechanical properties of TiCr2-base Laves phase alloys

Chen

Allen

Livingston

1998

Materials Science and Engineering: A

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Various effects on the room-temperature mechanical properties of TiCr 2 -base alloys have been assessed in efforts to improve the toughness of Laves phase intermetallics (AB 2 ). Systematic studies were performed on: (i) single-phase stoichiometric and nonstoichiometric TiCr 2 , (ii) TiCr 2 -base ternary Laves phases, and (iii) two-phase binary alloys containing TiCr 2 . In order to make quantitative comparisons among the different alloys, Vickers indentation was used to obtain hardness and fracture toughness values. Within the single-phase field, constitutional defects accounted for the compositional dependencies of properties, and may aid the synchroshear deformation process. Ternary Laves phases comprised of Fe, Nb, V or Mo additions to TiCr 2 indicated that alloying elements which partition to both A and B sublattices can improve the toughness. Stabilization of the cubic C15 crystal structure also resulted in higher toughness values. Small amounts of the bcc �-phase effectively reduced crack lengths in the Laves phase, and two-phase alloys of (Ti,Cr) + TiCr 2 exhibited significant improvements in toughness.

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Section: Introductionmentioning

confidence: 99%

Factors affecting the room-temperature mechanical properties of TiCr2-base Laves phase alloys

Chen

Allen

Livingston

1998

Materials Science and Engineering: A

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“…Moreover, eutectic-cell patterns exhibit an unsteady dynamics (also see [60] for bulk transparent alloys, and [223] for metallic alloys). In some alloys, the shape and the stability of eutectic cells can also depend markedly on the crystal orientation of the eutectic grain [224,225].…”

Section: Ternary Eutecticsmentioning

confidence: 99%

In situ observation of solidification patterns in diffusive conditions

Akamatsu

Nguyen-Thi

2016

Acta Materialia

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International audienceWe present a review of recent in situ experimentation studies on solidification front patterns and microstructures in alloys. Front-tracking diagnostics and real-time observation methods using high-resolution optical or X-ray imaging devices currently apply to model transparent systems as well as metallic alloys in thin and bulk samples. On a theoretical basis that spans the physics of nonequilibrium pattern formation and materials science, in combination with time-resolved numerical simulations, conclusive results of both fundamental-and applied-science interest have been obtained on major problems relative to multiscale microstructure selection, morphological transitions, and crystallographic effects during single-and multi-phase solidification. We will mainly focus on the dynamics of cellular, dendritic, and eutectic growth patterns in diffusive-growth conditions, that is, in the absence of convection in the liquid. This can be achieved in (semi-)thin samples, or, for bulk solidification, in the reduced-gravity environment of orbiting facilities. A selection of emerging work on, e.g., faceted growth and adaptive control of solidification patterns will furthermore be reported. We conclude by pointing out open questions and ne

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“…Studies of Cu-Mg alloys are not numerous and mainly limited to the aging response of low alloyed compositions [8][9][10][11] apart from the work of Fehrenbach et al [12] and Fidler et al [13] on the eutectic transformation.…”

Section: Introductionmentioning

confidence: 99%

Microstructural design of new high conductivity – high strength Cu-based alloy

Gorsse

Ouvrard

Gouné

et al. 2015

Journal of Alloys and Compounds

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a b s t r a c tSome novel high conductivity-high strength materials were designed in the binary Cu-Mg. They exhibit an excellent balance between strength and electrical properties. The properties and the performance of the designed materials are compared with the main Cu-based alloys and the analysis shows that they perform equally to the best one (Cu-Be). Furthermore, we show that an increase of Mg content modifies the microstructure feature and leads to a strong increase of strength without any significant deterioration of the electrical conductivity. This behavior was attributed to the formation of eutectic islands in which high density of Cu 2 Mg nanoparticles precipitate.

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Unidirectional solidification of monovariant CuNiMg eutectic alloys II. Microstructures and properties

Cited by 13 publications

References 12 publications

Factors affecting the room-temperature mechanical properties of TiCr2-base Laves phase alloys

Factors affecting the room-temperature mechanical properties of TiCr2-base Laves phase alloys

In situ observation of solidification patterns in diffusive conditions

Microstructural design of new high conductivity – high strength Cu-based alloy

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