Characterisation of precipitate phases in magnesium alloys using electron microdiffraction

Nie, J. F.; Xiao, Xiaoling; Luo, Cheng; Muddle, Barrington Charles

doi:10.1016/s0968-4328(00)00094-9

Cited by 121 publications

(62 citation statements)

References 11 publications

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“…The migration of this interface in its normal direction seems to involve the formation and later gliding of moire´ledges within the interface plane. [32,33] These observations suggest the existence of commensurate matching of 1 " 100 À Á a and 0 " 33 À Á b planes [29,33,34] in the major facet interface, and of 10 " is the near closest-packed plane in the magnesium lattice, suggests that the major and minor side facets of each b plate have relatively low interfacial energies.…”

Section: Precipitationmentioning

confidence: 91%

“…Apart from the near Burgers orientation relationship, two other orientation relationships have also been reported for the b phase, [19,27,29,35,36] . For the latter orientation relationship, the b precipitates develop a rod shape with their long axes inclined with respect to the 0001 ½ a direction.…”

Section: Precipitationmentioning

confidence: 98%

“…[27] Subsequent transmission electron microscopy studies [28,29] indicate that the orientation relationship is actually near the Burgers. The b precipitates in this orientation relationship have a plate morphology, with their broad surface parallel to (0001) a (Figures 1(b) and (c)).…”

Section: Precipitationmentioning

confidence: 99%

“…[28,29,31] Despite the irrational orientation of these side facets with respect to both precipitate and matrix lattices, the major and minor side facets (Figure 2 respectively. Figure 2(a) shows the major side facet of a thin b plate that is embedded in the matrix phase.…”

Section: Precipitationmentioning

confidence: 99%

“…This major interface is parallel to the moire´fringes resulting is reproduced from Refs. [29] and [20], and (c) is from Ref. [20].…”

Section: Precipitationmentioning

confidence: 99%

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Precipitation and Hardening in Magnesium Alloys

Nie

2012

Metall Mater Trans A

1,351

519

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Magnesium alloys have received an increasing interest in the past 12 years for potential applications in the automotive, aircraft, aerospace, and electronic industries. Many of these alloys are strong because of solid-state precipitates that are produced by an age-hardening process. Although some strength improvements of existing magnesium alloys have been made and some novel alloys with improved strength have been developed, the strength level that has been achieved so far is still substantially lower than that obtained in counterpart aluminum alloys. Further improvements in the alloy strength require a better understanding of the structure, morphology, orientation of precipitates, effects of precipitate morphology, and orientation on the strengthening and microstructural factors that are important in controlling the nucleation and growth of these precipitates. In this review, precipitation in most precipitation-hardenable magnesium alloys is reviewed, and its relationship with strengthening is examined. It is demonstrated that the precipitation phenomena in these alloys, especially in the very early stage of the precipitation process, are still far from being well understood, and many fundamental issues remain unsolved even after some extensive and concerted efforts made in the past 12 years. The challenges associated with precipitation hardening and age hardening are identified and discussed, and guidelines are outlined for the rational design and development of higher strength, and ultimately ultrahigh strength, magnesium alloys via precipitation hardening.

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Section: Precipitationmentioning

confidence: 91%

Section: Precipitationmentioning

confidence: 98%

Section: Precipitationmentioning

confidence: 99%

Section: Precipitationmentioning

confidence: 99%

“…This major interface is parallel to the moire´fringes resulting is reproduced from Refs. [29] and [20], and (c) is from Ref. [20].…”

Section: Precipitationmentioning

confidence: 99%

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Precipitation and Hardening in Magnesium Alloys

Nie

2012

Metall Mater Trans A

1,351

519

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Crystal Plasticity Modeling of the Dynamic Behavior of Magnesium Alloy, WE43‐T5, Plate

Bhattacharyya¹,

Agnew²,

Wu³

et al. 2015

Magnesium Technology 2015

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High‐Cycle Fatigue Behavior of Deep Cryogenic–Elevated Temperature Cycling Treated Sand‐Cast Mg–6Gd–3Y–0.5Zr Alloy

Liu

Wen

Meng³

et al. 2021

Adv Eng Mater

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Herein, the high‐cycle fatigue behavior of the sand‐cast Mg–6Gd–3Y–0.5Zr (VW63Z) alloy is investigated. Deep cryogenic–elevated temperature cycling (DCETC) treatment is used to simulate the thermal cycling in space. The results indicate that the DCETC treatment can influence the high‐cycle fatigue performance of the sand‐cast VW63Z alloy. Especially, the fatigue strength of the VW63Z alloy in T6 state is improved to 140 MPa after three DCETC cycles. The changes in fatigue performance arise from the transformation of β′ phases in the DCETC treatment process. In addition, the formation and propagation of the fatigue crack during high‐cycle fatigue test are also studied systematically.

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Characterisation of precipitate phases in magnesium alloys using electron microdiffraction

Cited by 121 publications

References 11 publications

Precipitation and Hardening in Magnesium Alloys

Precipitation and Hardening in Magnesium Alloys

Crystal Plasticity Modeling of the Dynamic Behavior of Magnesium Alloy, WE43‐T5, Plate

High‐Cycle Fatigue Behavior of Deep Cryogenic–Elevated Temperature Cycling Treated Sand‐Cast Mg–6Gd–3Y–0.5Zr Alloy

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