Microstructure, Phase Evolution and Precipitation Strengthening of Mg‐3.lNd‐0.45Zr‐0.25Zn Alloy

Atiya, Galit; Bamberger, Μ.; Katsman, A.

doi:10.1002/9781118062029.ch48

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2013

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“…→ β ″(DO 19 ) → β ′(fcc) → β (bcc) 10. G. Atiya researched the microstructure, phase evolution and precipitation strengthening of Mg–3.lNd–0·45Zr–0·25Zn alloy 18. However, there is little report about the precipitation sequence of Mg–Nd–Zn–Zr alloys after laser welding.…”

Section: Introductionmentioning

confidence: 99%

Precipitate morphology and effects on strength of laser welded Mg–Nd–Zn–Zr after aging treatment

Yang

Dai

et al. 2013

Materials Science and Technology

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Magnesium rare earth alloys have been received extensive attention due to their attractive mechanical properties. The precipitation sequence in laser welded Mg–3Nd–0·2Zn–0·4Zr (NZ30K) alloy during aging treatment has been investigated using transmission electron microscopy (TEM). The results show that the tensile strength of laser welded NZ30K can be improved significantly after aging treatment at 200°C for 8 h. The precipitation in laser welded NZ30K alloy follows the sequence of super saturated solid solution→ β″(DO19)→ β′(fcc)→ β. The results of incremental of critical shear stress component are Δ τs/Δ τp/Δ τr/Δ τf = 1·86∶3·57∶3·14∶1. The platelet of precipitates with high volume fraction is the most important factor that enhances aging treatment strengthening.

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Section: Introductionmentioning

confidence: 99%