A novel criterion for assessing the processability of semi-solid alloys: The enthalpy sensitivity of liquid fraction

Hu, Xiaogang; Hu, Z.H.; Qu, Wen Ying; Li, X.W.; Li, Z.; Zhou, Yuxuan; Midson, Stephen P.; Zhu, Qiang

doi:10.1016/j.mtla.2019.100422

Cited by 13 publications

(4 citation statements)

References 20 publications

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“…Even though some materials have been successfully developed, different material systems are highly desired to fulfill more requirements for industrial applications [78,79]. Also, the criterion for assessing the processability of materials for SSP is also needed to verify their applicability [80,81].…”

Section: Discussionmentioning

confidence: 99%

Progress of Semi-Solid Processing of Alloys and Composites in China

Gan

Luo

et al. 2022

SSP

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Following the rapid growth of the automotive and communication industries, components with high quality and low cost are eagerly desired in China. Various technologies have been developed in China to meet the demand, while semi-solid processing (SSP) of alloys and composites is one of the most successfully developed and practically applied technologies. The major SSP applied in China is the rheocasting in terms of the Swirled Enthalpy Equilibration Device (SEED) process. In this review, we start with a brief reviewing some common slurry preparation methods and recent innovations of the SEED process. Subsequently, we describe the general situation and some recent examples of successful development and applications of SSP in China. Lastly, the future directions in SSP of alloys and composites are highlighted in this frontier research field at the end of this review.

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Section: Discussionmentioning

confidence: 99%

Progress of Semi-Solid Processing of Alloys and Composites in China

Gan

Luo

et al. 2022

SSP

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“…A kinetic diffusion model shown in Fig. 3a that the pure Al particle (30 vol.%) surrounded by uniform AlSi12 melt was established using Thermal-calc software [19]. Three processing temperatures were set for AS30 (580 ℃, 585 ℃ and 590℃) to examine the ability controlling solid features.…”

Section: Experiments Proceduresmentioning

confidence: 99%

Microstructure Design of Semi-Solid Slurry for Metal Direct Writing

Li,

Hu,

et al. 2023

SSP

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Metal direct writing in semi-solid slurry is an innovative technology to realize low-cost printing of load-bearing parts in contrast to laser-based additive manufacturing. However, it is challenging to achieve near net-forming of 3D parts in the current stage because of the out of controlled microstructure and hence the unstable macro extrusion of the used semi-solid slurry. Here, mixed powder remelting (MPR) is introduced to actively design the characteristics of solid phases, i.e., solid fraction, shape factor, and size distribution. Specifically, high-melting-point pure Al powder served as the dispersed solid phases in the liquid phase that transformed from Al-Si alloy powder after remelting, leading to hypoeutectic Al-Si semi-solid slurry. The effectiveness of this approach was experimentally examined and kinetically modelled, to prepare semi-solid slurry with pre-set microstructure. The improved extrusion stability of semi-solid slurry can be anticipated, and it is universal for manufacturing of metal matrix composites slurry.

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“…On the other hand, very recently, the enthalpy sensitivity of liquid fraction has been suggested by Hu et al [39] as a novel and effective criterion for assessing the semi-solid processability. Likewise, their results also indicated that the wrought alloys with higher enthalpy sensitivity are more difficult to be rheoformed than the cast alloys.…”

Section: Possibility Analysis Of Slurry Preparationmentioning

confidence: 99%

Current Progress in Rheoforming of Wrought Aluminum Alloys: A Review

Gan

et al. 2020

Metals

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Semi-solid processing (SSP), including rheoforming and thixoforming, offers a promising opportunity to manufacture net-shaped parts with complex structure and excellent mechanical properties. Owing to its low cost and short process, rheoforming has been the subject of extensive study over the last two decades. The interest in the rheoforming of wrought aluminum alloys is progressively growing among both the research and industrial communities. This review starts with reviewing the recent efforts and advances on preparation of semi-solid slurry of wrought Al alloys, followed by discussing the correlation between microstructure and performance of these alloys. Finally, special attention is paid in the industrial application and the future trends of rheoforming of wrought aluminum alloys.

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A novel criterion for assessing the processability of semi-solid alloys: The enthalpy sensitivity of liquid fraction

Cited by 13 publications

References 20 publications

Progress of Semi-Solid Processing of Alloys and Composites in China

Progress of Semi-Solid Processing of Alloys and Composites in China

Microstructure Design of Semi-Solid Slurry for Metal Direct Writing

Current Progress in Rheoforming of Wrought Aluminum Alloys: A Review

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