Journal ArticleDOI
Steel-based composites : driving forces and classifications
David Embury,Olivier Bouaziz +1 more
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In this paper, the authors provide an overview of steel-based composites and allow modeling of the mechanical response to be considered both at the continuum level and in terms of dislocation mechanisms depending on the length scale and the degree of mechanical contrast between the constituent phases.Abstract:
In this overview of steel-based composites, consideration is given to conventional metal-matrix composites, in which steel is combined with another metal, ceramic, or polymer. In addition, we define fully steel composites, in which both components of the structure are developed within the steel. These approaches are integrated by discussing a series of macroscopic, mesoscopic, and microscopic examples. This review provides an integrated view of steel composites and allows modeling of the mechanical response to be considered both at the continuum level and in terms of dislocation mechanisms depending on the length scale and the degree of mechanical contrast between the constituent phases. In the context of fully steel composites, consideration is given to static systems in which the volume fraction of the strengthening phase is constant and the length scale is varied by heat treatment or imposed plastic strain. Moreover, we discuss dynamic systems in which a phase transition occurs concomitantly with plastic strain, resulting in an increase in the density of planar barriers that control the plasticity. A discussion of classical works that describe materials such as Damascus steels is used as a template to consider a variety of ways of producing ultrahigh-strength steel composites. Examples of applications are cited and linked to the important issue of developing appropriate fabrication methods for the production of current and future steel composites.read more
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Metal matrix composites
TL;DR: In this article, a ceramic-reinforced aluminum matrix composite is formed by contacting a molten aluminum-magnesium alloy with a permeable mass of ceramic material in the presence of a gas comprising from about 10 to 100% nitrogen, by volume, balance non-oxidizing gas, e.g., hydrogen or argon.
Journal ArticleDOI
Heterostructured materials: superior properties from hetero-zone interaction
Yuntian Zhu,Kei Ameyama,Peter M. Anderson,Irene J. Beyerlein,Huajian Gao,Hyoung Seop Kim,Enrique J. Lavernia,Suveen N. Mathaudhu,Haël Mughrabi,Robert O. Ritchie,Nobuhiro Tsuji,Xiangyi Zhang,Xiaolei Wu +12 more
Abstract: Heterostructured materials are an emerging class of materials with superior performances that are unattainable by their conventional homogeneous counterparts. They consist of heterogeneous zones wi...
Journal ArticleDOI
Tensile yield strength of a single bulk Al0.3CoCrFeNi high entropy alloy can be tuned from 160 MPa to 1800 MPa
Bharat Gwalani,Stéphane Gorsse,Deep Choudhuri,Yufeng Zheng,Rajiv S. Mishra,Rajarshi Banerjee +5 more
TL;DR: In this paper, the tensile yield strength of a single Al0.3CoCrFeNi high entropy alloy (or complex-concentrated alloy), can be enhanced from 160 MPa to over 1800 MPa (1.8 GPa) via microstructural engineering enabled by thermo-mechanical processing of the bulk alloy.
Journal ArticleDOI
Cold-drawn pearlitic steel wires
TL;DR: In this article, the microstructural evolution during progressive cold-drawing is studied and a consolidated view indicates that carbon-defect interactions play a major role in all aspects of the wire properties.
Journal ArticleDOI
Annealing Temperature Dependence of the Tensile Behavior of 10 pct Mn Multi-phase TWIP-TRIP Steel
Sangwon Lee,Bruno C. De Cooman +1 more
TL;DR: In this paper, the relationship between the microstructure and the mechanical properties of Fe-10pct Mn-3-pct Al-2 -2 -pct Si-0.3 -C multi-phase steel was investigated.
References
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Journal ArticleDOI
Correlations between the calculated stacking fault energy and the plasticity mechanisms in Fe–Mn–C alloys
TL;DR: In this article, a model for the evaluation of stacking fault energy (SFE) in Fe-Mn-C austenitic alloys, at different temperatures, was proposed, where the Gibbs energy due to the antiferromagnetic to paramagnetic transition was also taken into account.
Journal ArticleDOI
Effect of grain and twin boundaries on the hardening mechanisms of twinning-induced plasticity steels
TL;DR: In this paper, a new physical-based model describing the isotropic and kinematic hardening is presented and validated in relation to the grain size and the twin spacing during straining.
Journal ArticleDOI
Very strong bainite
TL;DR: A steel with an ultimate tensile strength of 2500 MPa, a hardness at 600-670 HV and toughness in excess of 30-40 MPa/m 1/2 is the result of exciting new developments with bainite as discussed by the authors.
Journal ArticleDOI
The structure and properties of drawn pearlite
J.D. Embury,R.M Fisher +1 more
TL;DR: In this article, an empirical model has been developed to relate the flow stress of the drawn wire to the spacing of substructural barriers in terms of the drafting strain, which indicates that this type of strengthening mechanism is operative in the case of drawn iron wire of commercial purity.
Journal ArticleDOI
Modelling of TWIP effect on work-hardening
Olivier Bouaziz,N Guelton +1 more
TL;DR: In this paper, a work-hardening model for Austenitic steels was developed taking into account the interaction between twinning and dislocation gliding, and the results from the model were in good agreement with the tensile test results.