Achieving exceptional creep resistance in rare-earth-free Mg-base alloys by engineering the shape, size and fraction of eutectic, particles and precipitates

Koundinya, N.T.B.N.; Kottada, Ravi Sankar

doi:10.1016/j.scriptamat.2018.10.046

Cited by 19 publications

(3 citation statements)

References 42 publications

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“…Limited creep resistance has been regarded as one of the principal hurdles which are restricting the widespread applications of Mg alloys 14 , 15 . One critical strategy enhancing the creep performance is to alloy Mg with RE elements.…”

Section: Introductionmentioning

confidence: 99%

“…Li et al 13 discovered the hexagonal patterning Gd nanofibers in extruded Mg-Gd binary alloys and illustrated that these nano structures can potentially modify the mechanical performance by tunning the work hardening behaviour. Therefore, it is of importance to pay attention to the interactions between dislocations and RE atoms as well as their effect on the macroscopic properties, particularly for the plastic deformation at high temperatures.Limited creep resistance has been regarded as one of the principal hurdles which are restricting the widespread applications of Mg alloys 14,15 . One critical strategy enhancing the creep performance is to alloy Mg with RE elements.…”

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confidence: 99%

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The role of dislocation-solute interactions on the creep behaviour of binary Mg–RE alloys

Jin

et al. 2021

Sci Rep

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The effect of dislocation-RE atoms interactions on the creep behaviour has been studied via creep testing and HAADF-STEM analysis of two extruded alloys; Mg–0.5Ce and Mg–2Gd (wt%). Almost no Ce atoms are detected in the Mg matrix due to the low solid solubility and faster diffusion rate in as-extruded condition. However, Gd solute segregations are observed along dislocations and hexagonal dislocation patterns. Such segregations can not only pin the dislocation motion and enhance the creep strengthening via dislocation patterns, but also lead to dynamic precipitation. Thus, combing with the stress exponent values, the transition of creep mechanism between Mg–0.5Ce alloys and Mg–2Gd alloys has been found and dislocation-Gd atoms interactions are determined to be the main factor for superior creep resistance of Mg–2Gd alloys.

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

The role of dislocation-solute interactions on the creep behaviour of binary Mg–RE alloys

Jin

et al. 2021

Sci Rep

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show abstract

“…Limited creep resistance has been regarded as one of the principal hurdles which are restricting the widespread applications of Mg alloys [14,15]. One critical strategy enhancing the creep performance is to add RE elements to achieve solid solution alloys.…”

mentioning

confidence: 99%

The Role of Dislocation-solute Interactions on the Creep Behaviour of Binary Mg-RE Alloys

Jin

et al. 2020

Preprint

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The effect of dislocation-RE atoms interactions on the creep behaviour has been studied via creep testing and HAADF-STEM analysis of two extruded alloys; Mg-0.5Ce and Mg-2Gd (wt.%). Almost no Ce atoms are detected in the Mg matrix due to the low solid solubility in as-extruded condition. However, Gd solute segregations are observed along dislocations and hexagonal dislocation patterns. Such segregations can not only pin the dislocation motion and enhance the creep strengthening via dislocation patterns, but also lead to dynamic precipitation. Thus, combing with the stress exponent values, the transition of creep mechanism between Mg-0.5Ce alloys and Mg-2Gd alloys has been found and dislocation-Gd atoms interactions are determined to be the main factor for superior creep resistance of Mg-2Gd alloys.

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Tension/Compression Difference in Creep Resistances of Wrought Mg-Zn-Based Alloy with Icosahedral Quasicrystal Phases

Ying,

Guan,

Guan

et al. 2024

Met. Mater. Int.

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Achieving exceptional creep resistance in rare-earth-free Mg-base alloys by engineering the shape, size and fraction of eutectic, particles and precipitates

Cited by 19 publications

References 42 publications

The role of dislocation-solute interactions on the creep behaviour of binary Mg–RE alloys

The role of dislocation-solute interactions on the creep behaviour of binary Mg–RE alloys

The Role of Dislocation-solute Interactions on the Creep Behaviour of Binary Mg-RE Alloys

Tension/Compression Difference in Creep Resistances of Wrought Mg-Zn-Based Alloy with Icosahedral Quasicrystal Phases

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