Influence of Al–5Ti–1B master alloy addition on the grain size of AZ91 alloy

Колтыгин, А. В.; Баженов, В. Е.; Mahmadiyorov, Uralboy

doi:10.1016/j.jma.2017.08.002

Cited by 25 publications

(9 citation statements)

References 30 publications

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“…Several researchers have proved the grain refinement of B on as cast AZ91 alloys [15,16,17]. Suresh et al [15] reported that a B containing master alloy such as Al-4B could refine the grains of the as cast AZ91 alloy.…”

Section: Introductionmentioning

confidence: 99%

Effect of Boron on the Grain Refinement and Mechanical Properties of as-Cast Mg Alloy AM50

et al. 2019

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The effect of B addition on the microstructure and mechanical properties of AM50 was investigated, and the mechanism of grain refinement was clarified. Optical microscopy, X-ray diffraction, scanning electron microscopy, and electron probe microanalysis were used to characterize the microstructure evolution. The grain size of as-cast AM50 decreased from 550 μm to 100 μm with the B content increasing from 0 to 0.15 wt.%. AlB2 particles in the Al-3B master alloy transformed to Mg-B, and acted as the grain refiner. The addition of B to as cast AM50 alloy results in improved mechanical properties of AM50 + xB alloys. For instance, the YTS (yield tensile strength), UTS (ultimate tensile strength), and elongation of as cast AM50 + 0.15 wt.% B alloy was 94 MPa, 215 MPa, and 12.3%.

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Section: Introductionmentioning

confidence: 99%

Effect of Boron on the Grain Refinement and Mechanical Properties of as-Cast Mg Alloy AM50

et al. 2019

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“…More information pertaining to melting amid treating movements also illustrated in literature. 9,10,20,21…”

Section: Methodsmentioning

confidence: 99%

“…More information pertaining to melting amid treating movements also illustrated in literature. 9,10,20,21 Slurry preparation Essentially 1.5 kg of AZ91 melt (about 605°C) stands unhurriedly discharged into metal mold using cooling slope having dimension 250 mm and inclination 60º. Specifically, AZ91 slurry with five diverse slurry delivery rates (0.015, 0.020, 0.025, 0.030 amid 0.035 kg/s) and five diverse slurry delivery heights (50, 100, 150, 200 amid 250 mm) from cooling slope outlet are delivered inside metal mold.…”

Section: Methodsmentioning

confidence: 99%

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Influence of slurry delivery rate and height from cooling slope outlet on solidification and structural behaviors of molded AZ91 magnesium alloy

Sahu

Kund

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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AZ91 magnesium alloy melt experiences partial solidification while flowing on cooling slope with counter flowing water channel underside. It results in continuous production of semisolid slurry available at cooling slope outlet. Current experimental investigations pertain to the influence of slurry delivery rate and slurry delivery height from cooling slope outlet on solidification and structural behaviors (microstructure along with mechanical properties) of AZ91 magnesium alloy intended for semisolid casting. Slurry delivery rate along with slurry delivery height warrant necessary solidification and shear for grain growth and globularization within metal mold for producing semisolid casting. Moderate slurry delivery rate of 0.025 kg/s along with slurry delivery height of 150 mm results fairly modest solidification that would greatly contribute toward enhanced structural behaviors. As, quite smaller/bigger slurry delivery rate/height generate low shear due to slurry flow inertia or accelerated slurry flow resulting stick-slip flow/motion of alloy slurry on cooling slope. It results poorer structural behaviors amid extremely unwanted casting issues. As, throughout the course escape/retain of metal with gas arise. Since, lesser slurry delivery rate/height allows metal to escape thereby reduces strength and vice-versa. Additionally, lesser slurry delivery rate/height allows gas to escape thereby enhances strength and vice-versa. Therefore, moderate cooling slope casting parameter magnitudes guarantee solution to bewilderment.

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“…Carbon inoculation, such as using C 2 Cl 6 and Al 4 C 3 [24], can refine the grains of the Mg-Al alloys, but the use of C 2 Cl 6 may cause environmental problems and the use of carbon may contaminate the alloys. However, more attention has been paid to the Mg-Al alloys inoculated by Al-Ti-B master alloy because the achieved grain refinement is more effective, easy, and reliable [7,23,25,29,30]. Wang et al [30] reported that the grain size of AZ31 magnesium alloy can be effectively reduced by the optimal addition level of 0.3 wt.% Al-4Ti-5B master alloy and TiB 2 particles act as heterogeneous nuclei.…”

Section: Introductionmentioning

confidence: 99%

Grain Refinement of AZ91 Magnesium Alloy Induced by Al-V-B Master Alloy

Chang

Shen

et al. 2019

Metals

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It has long been recognized that grain refinement of Mg-Al alloys is difficult, although various methods have been tried. In the present paper, a novel grain refiner, Al-3.4V-1B master alloy, has been developed to refine the as-cast AZ91 alloy. A comparative study on grain refinement effects of Al-3.4V-1B, Al-5V, and Al-3Ti-1B master alloys was performed under the same solidification conditions. It is shown that Al-3.4V-1B master alloy not only has significant grain refinement ability, but also keeps stable anti-fading capacity with holding time up to 2 h. Based on the analysis of grain refinement, VB2 particles introduced by Al-3.4V-1B master alloy are the heterogeneous nuclei for AZ91 alloy.

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Influence of Al–5Ti–1B master alloy addition on the grain size of AZ91 alloy

Cited by 25 publications

References 30 publications

Effect of Boron on the Grain Refinement and Mechanical Properties of as-Cast Mg Alloy AM50

Effect of Boron on the Grain Refinement and Mechanical Properties of as-Cast Mg Alloy AM50

Influence of slurry delivery rate and height from cooling slope outlet on solidification and structural behaviors of molded AZ91 magnesium alloy

Grain Refinement of AZ91 Magnesium Alloy Induced by Al-V-B Master Alloy

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