An Al–Si–Ti hierarchical metal–metal composite manufactured by co-spray forming

Kelly, Aoife; Mi, Jinxing; Sinha, Godhuli; Krug, Peter; Crosa, F.; Audebert, F.; Grant, Patrick S.

doi:10.1016/j.jmatprotec.2011.07.001

Cited by 4 publications

(3 citation statements)

References 17 publications

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“…The Ti reinforcement phase exists in the form of thin fibrous inclusions along the extrusion direction, as well as some more equi-axed "bulbs". These results show excellent agreement with SEM microscopy results of Kelly et al [2011]. The complex sample response to loading is manifested in the appearance of bending from N = 5 and continues to develop further until the last loading increment (N = 10).…”

Section: Resultssupporting

confidence: 87%

“…The behavior of these materials differs from conventional matrix composites in that both matrix and reinforcing phase are ductile metals [Russell et al (2000)]. Typically, metal-metal composites are manufactured using co-spay forming methods [ Kelly et al (2011)], and may involve blending together a face centered cubic (fcc) metal with a body centered cubic (bcc) metal, e.g., Cu-Nb or Al-Nb, or an fcc metal with a hexagonal close-packed (hcp) metal, e.g., Al-Ti. In the present study, an Al-12Si alloy + 12% Ti specimen was studied by absorption tomography under multi-stage in situ compression.…”

Section: Digital Volume Correlationmentioning

confidence: 99%

See 1 more Smart Citation

Rich Tomography Techniques for the Analysis of Microstructure and Deformation

Baimpas

Xie

Song

et al. 2014

Int. J. Comput. Methods

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Until very recently, the three-dimensionality of the material world presented numerous challenges in terms of characterization, data handling, visualization, and modeling. For this reason, 2D representation of sections, projections, or surfaces remained the mainstay of most popular imaging techniques, such as optical and electron microscopy and X-ray radiography. However, the advent of faster computers with greater memory capacity ensured that large 3D matrices can now not only be stored and manipulated efficiently, but also that advanced algorithms such as algebraic reconstruction techniques (ART) can be used to interpret redundant datasets containing multiple projections or averages across the object obtained by some suitable analytical measurement technique. These tools open up unprecedented opportunities for numerical simulation. Model formulation can be accomplished semi-automatically on the basis of microstructurally-informed 3D imaging, while model validation can be achieved by direct comparison of 3D maps of complex quantities, such as displacement vectors or strain tensor components. In this paper, we review several modalities of what can be referred to as "rich" tomography: strain tomography in the bulk of a load bearing structural component; Laue orientation tomography for nondestructive mapping of grain orientation within a polycrystal, and * * Corresponding author. 1343006-1 Int. J. Comput. Methods 2014.11. Downloaded from www.worldscientific.com by MONASH UNIVERSITY on 04/11/15. For personal use only. N. Baimpas et al. the use of sequences of tomographic reconstructions for digital volume correlation (DVC) analysis of in situ deformation.

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Section: Resultssupporting

confidence: 87%

Section: Digital Volume Correlationmentioning

confidence: 99%

Rich Tomography Techniques for the Analysis of Microstructure and Deformation

Baimpas

Xie

Song

et al. 2014

Int. J. Comput. Methods

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“…Joshi et al [ 9 ] proposed a framework where a level-I composite is integrated with an additional phase to form a level-II composite (which can be integrated further into a level-III composite, and so on). Hierarchical composites [ 10 , 11 ] are composed of two or more constituent phases, at least one of which is a composite material. The fracture toughness of the composites was improved using a graded composite architecture, with less strength loss.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of TiCp/Fe Hierarchical Composites Prepared by a New Pressure Infiltration Method

Zhao,

Lu,

Wang

et al. 2024

Materials

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TiCp/steel composites are conventionally produced via powder metallurgy. In this paper, a liquid pressure infiltration method was developed to prepare a kind of spherical hierarchical architectured composite, in which spherical TiCp-rich hard phase regions were uniformly dispersed in TiCp-free soft phase region. The microstructure and mechanical properties of the architectured composites were carefully studied and compared with the common composite, as well as the effect of TiCp fraction on the properties. The results show that architecturual design can effectively improve both the toughness and strength of the composites. With TiCp content increasing from 30% to 50%, both the bending strength and the impact toughness of the architectured composites first increase, then decrease, and reach the highest at 40% TiCp. The highest impact toughness reaches 21.2 J/cm2, being 6.2 times that of the common composite and the highest strength being 67% higher. The pressure infiltration method possesses adaptability to varying shapes and sizes of the products, allowing for large-scale preparation. Therefore, for the first time, the combination of pressure infiltration preparation and architectural design was applied to TiCp/steel composites.

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Spray Forming of Aluminium Alloys

Krug

2017

Metal Sprays and Spray Deposition

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An Al–Si–Ti hierarchical metal–metal composite manufactured by co-spray forming

Cited by 4 publications

References 17 publications

Rich Tomography Techniques for the Analysis of Microstructure and Deformation

Rich Tomography Techniques for the Analysis of Microstructure and Deformation

Microstructure and Properties of TiCp/Fe Hierarchical Composites Prepared by a New Pressure Infiltration Method

Spray Forming of Aluminium Alloys

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