Evading strength and ductility trade-off in an inverse nacre structured magnesium matrix nanocomposite

Luo, Xi; Zhao, Ke; He, Xiangming; Bai, Yuanli; Andrade, Vincent De; Zaiser, Michael; An, Linan; Liu, Jinling

doi:10.1016/j.actamat.2022.117730

Cited by 57 publications

(19 citation statements)

References 48 publications

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“…Increase in pile-up density of GNDs is believed as the main source of back stress increment [25], which can be reflected by local misorientation maps (KAM) through the relationship of [26], where θ , u and b are mean misorientation angle, step size of EBSD and Burgers vector, respectively. In the Gd0.2 sample, the b should be larger than that of Gd0 sample owing to lattice expansion, and the θ is lower than the Gd0 sample shown in Figure 3e,d.…”

Section: Resultsmentioning

confidence: 99%

Bauschinger effect in Gd micro-alloying metastable high-entropy alloy

Peng

2023

Materials Science and Technology

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To investigate Bauschinger effect in metastable high-entropy alloys with strain-induced FCC → HCP phase transformation, we designed a series of Gd micro-alloying non-equiatomic metastable high-entropy alloys. The results show that all tested alloys have asymmetrical tension-compression properties exhibiting the obvious Bauschinger effect, which is related to the different levels of phase transformation in compression and tension owing to different deformation textures. Excessive phase transformation suppresses the increase in pile-up density of geometrically necessary dislocations (GNDs), resulting in a back stress relaxation effect. The inverse phase transformation observed by quasi in-situ EBSD proves the instability of the HCP phase. The established kinetic model points out limitation of the classical back stress measurement method in metastable high-entropy alloys.

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Section: Resultsmentioning

confidence: 99%

Bauschinger effect in Gd micro-alloying metastable high-entropy alloy

Peng

2023

Materials Science and Technology

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“…1,[56][57][58][59] Researchers widely use PM for the production of Mg matrix composites. [60][61][62][63][64][65][66][67][68][69][70] In one of those studies, Wang et al 60 produced AZ31/MgO composites by PM. Firstly, they milled the AZ31 powder at 250 rpm for 10 h. In order to produce in-situ MgO, the container was filled with a gas (40 vol.-% O 2 and 60 vol.-% Ar) at 1 atm.…”

Section: Powder Metallurgymentioning

confidence: 99%

“…As a result, particle-particle interaction leads to particle agglomeration. An et al 67 studied the microstructure of Mg/SiC nacre composites. The TEM and EBSD analysis of the composite are given in Figure 11.…”

Section: Change In Grain Sizementioning

confidence: 99%

“…(c) EBSD map along ED with grain orientation legend showing the grain structure of soft phase. (d and e) Grain size distributions in the hard phase and the soft phase, respectively 67.…”

mentioning

confidence: 99%

“…(a) CLSM image of the fracture surface (b) SE-SEM image showing representative fracture surface where the regions with ductile fracture characteristics. (c, d) High magnification SE-SEM observations (e) CLSM image and (f) SE-SEM image.The colour of (a and e) stands for the relative height 67.…”

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confidence: 99%

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Recent advances in mechanical properties of Mg matrix composites: a review

Aydın

2024

Materials Science and Technology

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Magnesium (Mg), with a density of two-thirds of aluminium (Al) and one-fourth of steel, has become one of the most attractive materials for automotive and aerospace industries owing to the obligation to reduce fuel consumption and gas emissions. However, the poor mechanical property of Mg is one of the most significant barriers to its widespread use. The most widely used method to increase the use potential of Mg is the development of Mg matrix composites. This review focuses on the mechanical properties of recent Mg matrix composites. The effect of different reinforcement materials on the mechanical behaviour and failure mechanisms of Mg matrix composites was evaluated in detail.

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Recent Research on the Optimization of Interfacial Structure and Interfacial Interaction Mechanisms of Metal Matrix Composites: A Review

Zhong,

Jiang,

Sun

et al. 2024

Adv Eng Mater

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Interfaces in metal matrix composites (MMCs) are crucial in determining the mechanical properties and functionality of MMCs. This article reviews recent scientific advances and issues related to MMC interfaces from four different perspectives: interfacial structural design, interfacial defect control, thermodynamics and kinetics of interfacial reactions, and interfacial microstructure properties‐based numerical simulation. The influence of interfacial microstructural features on interfacial strength–toughness trade‐offs and their functionality is given special attention. The interfacial problem is still one of the main challenges to be solved in the composite system, which is mainly reflected in the following aspects: interfacial microstructure–deformation mechanisms in complex systems, precise control of interfacial defects and interfacial reaction products, and the efficient and cost‐effective application of numerical simulation techniques. The integrated computation and intelligent design (artificial intelligence) of composites through multiscale computational simulation with the guidance of “interface design‐property prediction” will be the key area of MMC interface research in the future.

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Evading strength and ductility trade-off in an inverse nacre structured magnesium matrix nanocomposite

Cited by 57 publications

References 48 publications

Bauschinger effect in Gd micro-alloying metastable high-entropy alloy

Bauschinger effect in Gd micro-alloying metastable high-entropy alloy

Recent advances in mechanical properties of Mg matrix composites: a review

Recent Research on the Optimization of Interfacial Structure and Interfacial Interaction Mechanisms of Metal Matrix Composites: A Review

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