The influence of calcium and cerium mischmetal on the microstructural evolution of Mg–3Al–1Zn during extrusion and resulting mechanical properties

Laser, T.; Hartig, Ch.; Nürnberg, M.R.; Letzig, Dietmar; Bormann, R.

doi:10.1016/j.actamat.2008.02.010

Cited by 195 publications

(87 citation statements)

References 11 publications

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“…In fact, changes in ECS due to the incorporation of foreign elements have been frequently observed and reported in various systems including ceramics and metals [5], even though a decisive theoretical understanding is still lacking. One of the two most frequently-cited mechanisms for the microstructure F o r P e e r R e v i e w O n l y 4 homogenizing effect of certain dopants is the well-known Zener dragging effect [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Equilibrium shape of nickel crystal

Hong

et al. 2009

Philosophical Magazine

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Section: Introductionmentioning

confidence: 99%

Equilibrium shape of nickel crystal

Hong

et al. 2009

Philosophical Magazine

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“…Thus the final extrusion texture with the perpendicularly oriented c-axis to ED is remained, but the intensities of the orientation position are decreased. Simultaneous effect was observed in AZ31 alloy doped by Ca and rare earth elements [28]. In addition, high orientation mismatch was also ascribed to activation of PSN mechanism during extrusion of the AZ31 alloys with addition of 0.4-0.8 wt.% Sr carried out at 350…”

Section: Mechanical Propertiesmentioning

confidence: 77%

Mechanical properties of as-cast and extruded Mg-4Zn and Mg-4Zn-0.4Ca alloys

HRADILOVA¹,

VOJTĚCH²

2021

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This work studied the effect of extrusion and alloying with 4 wt.% of Zn and 0.4 wt.% of Ca on the structure and mechanical properties of magnesium. Light, scanning electron microscopy, X-ray diffraction, hardness, compressive and tensile tests were used for this purpose. The addition of zinc led to the formation of MgZn and further alloying with calcium changed the nature of the secondary phase to Ca2Mg6Zn3. The process of extrusion resulted in significant structural refinement, which was the most pronounced for the Mg-4Zn-0.4Ca alloy. In this alloy the average grain size was 6 µm. The extrusion improved all the measured characteristics and the most pronounced improvement was observed in the case of tensile yield strength. The presence of calcium improved the positive effect of zinc on the mechanical properties of magnesium. Differences in the mechanical behaviour of magnesium and its alloys were discussed in relation to structural variations resulting in different strengthening effects.K e y w o r d s : magnesium alloys, microstructure, extrusion, mechanical properties

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“…Here, the tensile/compressive yield stress anisotropy was despite the similarity in crystallographic texture compared to monolithic AZ31/ AA5083, where {1 0 1 -2} <1 0 1 -1 > -type twinning was activated along the c-axis of the HCP unit cell in Figure 2 with comparatively similar ease in both tension and compression along the c-axis, based on the 45˚ angle between the c-axis and the vertical axis [41,42]. The tensile/compressive yield stress anisotropy can be attributed generally to half the strain rate used (less strain hardening) in compressive testing compared to tensile testing.…”

Section: Tensile and Compressive Behaviormentioning

confidence: 99%