Twinning characteristic in tension of magnesium alloys and its effect on mechanical properties

Liu, Guodong; Xin, Renlong; Liu, Feiya; Qing, Liu

doi:10.1016/j.matdes.2016.06.073

Cited by 45 publications

(5 citation statements)

References 36 publications

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“…For boundary misorientation angle >40°, twins are difficult to transmit . For Mg alloys with small c ‐axis misalignment, twin chains or twin bands were profuse during plastic deformation . Recent studies showed that for connected twins, the activation preference of specific twin variants was also associated with a local geometric compatibility factor ( m ′) in addition to the global Schmid factor .…”

Section: Introductionmentioning

confidence: 99%

Correlation between Boundary Misorientation and a Geometric Parameter for Cross‐Boundary Twins in Mg Alloys

Huang

Xin

2016

Adv Eng Mater

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Cross-boundary twins (referred to as twin pairs) are frequently observed at grain boundaries with small grain boundary angle (u) in deformed Mg alloys. This study calculates the distribution of the high peak geometric compatibility factor (m 0 ) values over potential variants with u. The misorientation angles (a) between the potential variants of twin pairs are also evaluated. It reveals that a is a reasonable reflection of the m 0 parameter for ideal basal texture. There is a clear variant with high m 0 , but there may be two variants with similar small values of a. Moreover, it shows that u correlates reasonably with high peak values of m 0 , particularly below 30 of misorientation.

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Section: Introductionmentioning

confidence: 99%

Correlation between Boundary Misorientation and a Geometric Parameter for Cross‐Boundary Twins in Mg Alloys

Huang

Xin

2016

Adv Eng Mater

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“…The combined rolling and ECAP processing were used for obtaining grain refinement with a homogeneous microstructure (Figueiredo & Langdon, 2009;Figueiredo et al, 2016;Li & Jiao, 2018). The samples were further subjected to tensile tests in order to promote the generation of new crystalline defects for accommodating the plastic deformation and, consequently, a higher density of interfaces (Liu et al, 2016).…”

Section: Methodsmentioning

confidence: 99%

Retrieving the configuration of grain boundary structure in polycrystalline materials by extraordinary X-ray reflection analysis

Aarão-Rodrigues¹,

Isaac²,

Figueiredo³

et al. 2020

J Appl Cryst

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The development of materials is strongly related to our capability of understanding thermal, mechanical and chemical processing on the nanoscale. Unravelling the interface structure is crucial for opening new regimes in property–performance space. Interface arrangements have been characterized by statistically limited microscopy techniques. In this work, a large-angular-range detector was used for synchrotron diffraction measurements on commercially pure Mg. Long acquisitions allowed the retrieval of preferred interface configurations through the observation of extraordinary diffraction peaks located close to the Mg 102, 200, 204 and 300 fundamental reflections. A kinematical simulation scanning possible interface structures established the correspondence of the non-bulk peaks to the interfacial organization of atoms that may be responsible for their appearance. Simulated interfaces were probed for a wide range of angular displacements with respect to the main cleavage planes. The results indicate configurations that allow the observation of X-ray diffraction, representing a long-range-ordered pattern of atomic distributions in Mg. The introduced methodology allows for nondestructive monitoring of systems that undergo processes that modify grain sizes and grain-interface orientation.

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“…According to Figure 8(d), twins are the primary deformation mechanisms in the matrix alloy due to the coarser initial grain size of the heat-treated sample. 33,35,38 Indeed, coarse-grain microstructures are prone to have a larger fraction of deformation twins than fine-grain microstructures. Due to this fact, DRX took place in hot-rolled MMCs with finer initial grain sizes, and deformation twins can hardly be found (see Figure 8(e)).…”

Section: Microstructural Evolutionmentioning

confidence: 99%

Effect of B₄C reinforcement and hot rolling on microstructure and mechanical properties of WE43 magnesium matrix composite

Banijamali

Palizdar

Nekouee

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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In this study, WE43 alloy matrix composites, reinforced with 2.5, 5, 7.5, and 10 wt% B4C particles have been produced by the stir casting technique at 750 °C. Cast ingots of the matrix alloy and the composites were then subjected to hot rolling at 480 °C. After that, the effect of B4C additions (0–10 wt%) as well as hot rolling on the microstructure and mechanical properties of WE43 alloy were investigated. Microstructural characterization following hot rolling revealed a relatively uniform distribution of B4C particles, well-bonded B4C particles to the matrix, and a minimal porosity level. Further, both as-cast and hot-rolled composites have shown considerable grain refinement and hence improved mechanical properties compared to unreinforced alloy. Twinning was the dominant deformation mechanism in the hot-rolled WE43 alloy, whereas dynamic recrystallization occurred extensively in hot-rolled composites. It was observed that tensile strength and hardness values were improved not only as B4C content increased but more due to the rolling effect; however, elongation to fracture was reduced. Maximum ultimate tensile strength of ∼284 MPa and yield strength of ∼259 MPa with an improved hardness to ∼97 HB were obtained for the hot-rolled WE43-10%B4C composite.

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Twinning characteristic in tension of magnesium alloys and its effect on mechanical properties

Cited by 45 publications

References 36 publications

Correlation between Boundary Misorientation and a Geometric Parameter for Cross‐Boundary Twins in Mg Alloys

Correlation between Boundary Misorientation and a Geometric Parameter for Cross‐Boundary Twins in Mg Alloys

Retrieving the configuration of grain boundary structure in polycrystalline materials by extraordinary X-ray reflection analysis

Effect of B₄C reinforcement and hot rolling on microstructure and mechanical properties of WE43 magnesium matrix composite

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Twinning characteristic in tension of magnesium alloys and its effect on mechanical properties

Cited by 45 publications

References 36 publications

Correlation between Boundary Misorientation and a Geometric Parameter for Cross‐Boundary Twins in Mg Alloys

Correlation between Boundary Misorientation and a Geometric Parameter for Cross‐Boundary Twins in Mg Alloys

Retrieving the configuration of grain boundary structure in polycrystalline materials by extraordinary X-ray reflection analysis

Effect of B4C reinforcement and hot rolling on microstructure and mechanical properties of WE43 magnesium matrix composite

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Product

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Effect of B₄C reinforcement and hot rolling on microstructure and mechanical properties of WE43 magnesium matrix composite