Evolution and distribution of Al 2 Sm phase in as-extruded AZ61– x Sm magnesium alloys during semi-solid isothermal heat-treatment

Chu, Chenliang; Hu, Zhi; Xiao, Li; Yan, Hong; Wu, Xiaoquan; Mai, Yuan-lu

doi:10.1016/s1003-6326(18)64768-5

Cited by 16 publications

(5 citation statements)

References 22 publications

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“…Magnesium (Mg) alloy has the advantages of low density, high specific strength and specific stiffness, easy recovery, and superior electromagnetic shielding performance [1][2][3][4]. With the development of automobile and aerospace industries, the demand for lightweight structural materials is gradually increased, whereby Mg alloys have received more attention [5][6][7][8][9]. Slip and twin are required to coordinate plastic deformation due to Mg has a hexagonal close-packed (HCP) crystal structure with an insufficient number of operative slip systems [10], therefore, the study of the plastic deformation of magnesium alloy has increased the difficulty.…”

Section: Introductionmentioning

confidence: 99%

Research on deformation mechanism of AZ31 magnesium alloy during uniaxial compression

Fang

Zhou

Lin

et al. 2023

Materials Science and Technology

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The effects of the non-basal slip and twinning modes on the mechanical behaviour and texture evolution of as-extruded AZ31 alloys during uniaxial compression at room temperature have been investigated by experiments and Visco-Plastic Self Consistent (VPSC) modelling. The results show that the activation of pyramidal slip and {10-11} contraction twinning (CT) can reduce the strain hardening rate in the later stage of compression. And the prismatic slip has a significant effect on the strain hardening rate, the activation of {10-12} extension twinning (ET) can significantly reduce the strain hardening rate and the compressive yield strength. Increased activity of the {10-11} CT causes the pole density transfer to the normal direction (ND) in the {0002} pole figure.

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Section: Introductionmentioning

confidence: 99%

Research on deformation mechanism of AZ31 magnesium alloy during uniaxial compression

Fang

Zhou

Lin

et al. 2023

Materials Science and Technology

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“…However, since the maximum solid solubility of pure Si at room temperature is very low and the pure Si is difficult to dissolve into solid magnesium matrix composites, so it mainly exists in the form of intermetallic compound as Mg2Si phase in the Mg2Si/AZ91D composite [6,7]. Although the Mg2Si phase can be used as a favorable heat-resistant strengthening phase in metal materials because it has a series of excellent performance characteristics [8,9]. However, due to the eutectic reaction, the Mg2Si phase is inclined to creating an unfavorable fishbone shape at low solidification rates.…”

Section: Introductionmentioning

confidence: 99%

Influences of Different Isothermal Temperatures on Microstructural Evolution of Mg₂Si/AZ91D Composite Fabricated by Semi-solid Treatment Process

Tang²,

Wang³

et al. 2023

J. Phys.: Conf. Ser.

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Due to the eutectic reaction, the Mg2Si phase is inclined to creating an unfavorable fishbone shape at low solidification rates. This can significantly degrade the mechanical characteristics and become the main barrier to the practical application of Mg2Si/AZ91D composites. It is regarded that semi-solid treatment process is an efficient technique to modulate the fishbone-shaped Mg2Si phases in Mg2Si/AZ91D composite. In this work, a new type of Mg2Si/AZ91D composite is successfully fabricated by semi-solid treatment process, and the influences of different isothermal temperatures on microstructural evolution of Mg2Si/AZ91D composite are studied. The findings illustrate that the mean size of the α-Mg grains increases and their trendency of spherification becomes more evidently after held for 30 min at different isothermal temperatures from 550° C to 580°C. Additionally, through semi-solid treatment process, the Mg2Si phases in Mg2Si/AZ91D composite are totally changed from their original fishbone shape into polygon or granule shapes. With increasing of the isothermal temperatures, the mean size and morphologies of Mg2Si phases have no significantly changes. The morphological change theory of Mg2Si phases in Mg2Si/AZ91D composite by semi-solid treatment process is also studied.

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“…According to these reasons, many techniques have been used to study the modulation of fishbone-shape eutectic Mg2Si phases in Mg-Si based alloy, including mechanical alloying [7] , rapid solidification [8] , hot extrusion [9] and electromagnetic stirring [10] . However, some studies illustrated these techniques might increase the manufacturing cost and bring about many problems that are challenging to resolved [7][8][9][10] . As a result, the modulation of fishbone-shape eutectic Mg2Si phases in Mg-Si based alloy requires additional studied.…”

Section: Introductionmentioning

confidence: 99%

Study on the influences of different process temperatures on microstructural evolution of Mg-11%Al-2%Zn-1%Si alloy through isothermal semi-solid treatment

Xu²,

Wang

et al. 2023

J. Phys.: Conf. Ser.

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Due to the eutectic reaction, the Mg2Si phase is inclined to creating an unfavorable fishbone shape at low solidification rates. This can significantly degrade the mechanical characteristics and become the main barrier to the practical application of Mg-Si based alloy. It is regarded that isothermal semi-solid treatment is an efficient technique to modulate the fishbone-shape eutectic Mg2Si phases in Mg-Si based alloys. In this work, a new type of Mg-11%Al-2%Zn-1%Si alloy is successfully fabricated through isothermal semi-solid treatment, and the influences of different process temperatures on microstructural evolution of Mg-11%Al-2%Zn-1%Si alloy are studied. The findings illustrate that the mean size of the α-Mg grains increases and their trendency of spheroidization becomes more evidently after held for 30 min at different process temperatures from 550 °C to 580 °C. Additionally, through isothermal semi-solid treatment, the eutectic Mg2Si phases in experimental alloy are totally changed from their original fishbone shape into polygon or granule shapes. With increasing the process temperatures, the mean size and morphologies of eutectic Mg2Si phases have no significantly changes. The morphological change theory of eutectic Mg2Si phases through isothermal semi-solid treatment is also studied.

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Evolution and distribution of Al 2 Sm phase in as-extruded AZ61– x Sm magnesium alloys during semi-solid isothermal heat-treatment

Cited by 16 publications

References 22 publications

Research on deformation mechanism of AZ31 magnesium alloy during uniaxial compression

Research on deformation mechanism of AZ31 magnesium alloy during uniaxial compression

Influences of Different Isothermal Temperatures on Microstructural Evolution of Mg₂Si/AZ91D Composite Fabricated by Semi-solid Treatment Process

Study on the influences of different process temperatures on microstructural evolution of Mg-11%Al-2%Zn-1%Si alloy through isothermal semi-solid treatment

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Evolution and distribution of Al 2 Sm phase in as-extruded AZ61– x Sm magnesium alloys during semi-solid isothermal heat-treatment

Cited by 16 publications

References 22 publications

Research on deformation mechanism of AZ31 magnesium alloy during uniaxial compression

Research on deformation mechanism of AZ31 magnesium alloy during uniaxial compression

Influences of Different Isothermal Temperatures on Microstructural Evolution of Mg2Si/AZ91D Composite Fabricated by Semi-solid Treatment Process

Study on the influences of different process temperatures on microstructural evolution of Mg-11%Al-2%Zn-1%Si alloy through isothermal semi-solid treatment

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Influences of Different Isothermal Temperatures on Microstructural Evolution of Mg₂Si/AZ91D Composite Fabricated by Semi-solid Treatment Process