Role of RE in the deformation and recrystallization of Mg alloy and a new alloy design concept for Mg–RE alloys

Jung, In‐Ho; Sanjari, Mehdi; Kim, Junghwan; Yue, Stephen

doi:10.1016/j.scriptamat.2014.12.010

Cited by 232 publications

(61 citation statements)

References 64 publications

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“…While it has been 43 established that dilute additions of Ca or rare earth (RE) solutes 44 can lead to a weakened basal texture after recrystallisation 45 [14][15][16][17][18][19], it is still controversial whether such alloying additions 46 can result in a weakened basal texture in the as-cold-rolled state 47 [17][18][19][20]. It is also unclear how the Ca alloying addition affects tex-48 ture evolution during the cold rolling process, primarily due to the 49 lack of direct observations of the texture evolution.…”

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confidence: 99%

Texture evolution during cold rolling of dilute Mg alloys

Zeng

Bian

et al. 2015

Scripta Materialia

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confidence: 99%

Texture evolution during cold rolling of dilute Mg alloys

Zeng

Bian

et al. 2015

Scripta Materialia

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“…It has been reported that DRXed grains usually exhibit RE-texture in the RE-containing Mg alloy, i.e., c-axis rotating some angles away from radial direction (RD) of as-extruded bar [16,[32][33][34]. The un-DRXed grain, on the other hand, keeps the typical fiber feature of c-axis being parallel with RD [32].…”

Section: Methodsmentioning

confidence: 99%

On the microstructure and mechanical property of as-extruded Mg-Gd-Y-Zn alloy with Sr addition

Liu

Diao

Chai

et al. 2017

Materials Science and Engineering: A

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In this study, microstructure evolutions of 0.2, 0.6) alloys (named as sample 0Sr, 0.2Sr, 0.6Sr) during heat-treatment and extrusion were investigated. As-cast sample 0Sr contains typical long period stacking ordered (LPSO) phases and Mg 3 RE. With Sr addition, amounts of LPSO phases decrease and are gradually replaced by the Mg 17 Sr 2 phases. After homogenization and annealing treatment, profuse strip LPSO phases readily precipitate in grain interiors of sample 0Sr, while only Mg 17 Sr 2 and Mg 3 RE phases are detected in samples 0.2Sr and 0.6Sr. It suggests that the Sr addition would inhibit LPSO phases. After extrusion, the bimodal grain structures, the bulk and strip LPSO phases are detected in sample 0Sr, which can contribute to providing strengthening and extra strain hardening. In as-extruded sample 0.2Sr, finer recrystallized grain size, bulk Mg 17 Sr 2 and LPSO phases (micron-scale) and Mg 5 RE phase (nano-scale) are found due to the pre-annealing treatment. However, lower amounts of both nano-sized and macro-sized LPSO phases lead to the low ultimate strength (300 MPa). In sample 0.6Sr, the strip LPSO phases are readily formed even though the length and total amounts of LPSO phases decrease.More bulk Mg 17 Sr 2 phases and LPSO phases are also precipitated, which lead to the more superior yield and ultimate strengths of 0.6Sr sample under higher temperature, as compared with the 0Sr sample.2

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“…As part of the wide research program for the recycling of RE elements from waste RE magnets and electronic components, [16,17] and also to introduce RE elements in new Mg alloy development, [18] thermodynamic optimization of many binary and ternary RE elements containing systems was performed. In particular, to obtain an accurate thermodynamic description of binary RE-ME (ME = Fe, Sn, Mn, Si, Pb, Al, Mg, and Zn) systems, systematic and critical assessments of the thermodynamic and phase diagram data were performed.…”

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confidence: 99%

Critical Systematic Evaluation and Thermodynamic Optimization of the Fe-RE System: RE = Gd, Tb, Dy, Ho, Er, Tm, Lu, and Y

Konar

Kim

Jung

2017

J. Phase Equilib. Diffus.

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As the second part of the thermodynamic study of binary Fe-RE system, critical evaluations and optimizations of all available phase diagrams and thermodynamic data for the Fe-heavy RE (heavy RE = Gd, Tb, Dy, Ho, Er, Tm, Lu, and Y) systems were conducted to obtain reliable thermodynamic functions of all the phases in the systems. In the thermodynamic modeling of the heavy RE systems, systematic variations in the phase diagrams and thermodynamic properties such as the enthalpy of mixing in the liquid state and enthalpy of formation of solid compounds with the atomic number of lanthanide series were observed. These systematic trends were incorporated in the optimization of the Fe-heavy RE system to resolve inconsistencies between available experimental data and to estimate unknown thermodynamic properties. The systematic trends in thermodynamic properties of solid and liquid phases and phase diagram of the entire Fe-RE systems were summarized.

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Role of RE in the deformation and recrystallization of Mg alloy and a new alloy design concept for Mg–RE alloys

Cited by 232 publications

References 64 publications

Texture evolution during cold rolling of dilute Mg alloys

Texture evolution during cold rolling of dilute Mg alloys

On the microstructure and mechanical property of as-extruded Mg-Gd-Y-Zn alloy with Sr addition

Critical Systematic Evaluation and Thermodynamic Optimization of the Fe-RE System: RE = Gd, Tb, Dy, Ho, Er, Tm, Lu, and Y

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