Semisolid heat treatment processing window of Pb-40% Sn alloy for feedstock in the 3D printing thixo-forming process

Alharbi, Abdullah; Khan, Ashfaq; Todd, Iain; Ramadan, Mohamed; Mumtaz, Kamran

doi:10.1016/j.matpr.2021.05.549

Cited by 9 publications

(2 citation statements)

References 34 publications

(46 reference statements)

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“…In addition, the semi-solid metal extrusion can combine with deposition process to develop a novel additive manufacturing method, in which wire feedstock was employed as a metallic filament [79]. The wire feedstock at the deposition head was prepared as semi-solid state to achieve rheological properties, so this technology can improve the mechanical properties and cost savings comparing metallic additive manufacturing [80]. Using this technological principle, Mg-38Zn metallic filaments produced via extrusion obtained a globular microstructure in the semi-solid state, and the excellent thixotropic of this semi-solid alloy permits the production of sound parts [81].…”

Section: Rheo-extrusion and Thixo-extrusionmentioning

confidence: 99%

An Overview on the Process Development and the Formation of Non-Dendritic Microstructure in Semi-Solid Processing of Metallic Materials

Wang

Dong

2022

Crystals

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Semi-solid metal (SSM) processing has been an attractive method for manufacturing near-net-shape components with high integrity due to its distinct advantages over conventional forming technologies. SSM processing employs a mixture of solid phase and liquid metal slurries and/or non-dendritic feedstocks as starting materials for shaping. Since the original development from 1970s, a number of SSM processes have been developed for shaping components using the unique rheological and/or thixotropic properties of metal alloys in the semi-solid state, in which the globular solid particles of primary phase are dispersed into a liquid matrix. In this paper, the progress of the development of shaping technologies and the formation of non-dendritic microstructure in association with the scientific understanding of microstructural evolution of non-dendritic phase are reviewed, in which the emphasis includes the new development in rheomoulding, rheo-mixing, rheo/thixo-extrusion and semi-solid twin roll casting, on the top of traditional rheocasting, thixoforming and thixomoulding. The advanced microstructural control technologies and processing methods for different alloys are also compared. The mechanisms to form non-dendritic microstructures are summarised from the traditional understanding of mechanical shear/bending and dendrite multiplication to the spheroidal growth of primary phase under intensively forced convection. In particular, the formation of spheroidal multiple phases in eutectic alloys is summarised and discussed. The concluding remarks focus on the current challenges and developing trends of semi-solid processing.

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Section: Rheo-extrusion and Thixo-extrusionmentioning

confidence: 99%

An Overview on the Process Development and the Formation of Non-Dendritic Microstructure in Semi-Solid Processing of Metallic Materials

Wang

Dong

2022

Crystals

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“…However, due to temperature constraints, their application is limited to low-melting temperature Pb-Sn alloys. [36][37][38][39][40][41] This article focuses on a case study of using aluminum metal wire as a feedstock material in EMAM using induction heating. This choice has been due to its low density, high strength-to-weight ratio, making it a popular material in aerospace, automobile, and industrial industries.…”

Section: Introductionmentioning

confidence: 99%

Effect of standoff distance on printability of aluminum 5356 alloy through extrusion-based metal additive manufacturing using induction heating

Choubey,

Jain

2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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Induction heating as a heat source in extrusion-based metal additive manufacturing (EMAM) is gaining popularity due to its inherent benefits as a safe, clean, and precise heating source. Metal wire as a feedstock material is economically viable and highly efficient in terms of material utilization compared to powder feedstock materials. The combination of induction heating with metal wire as a feedstock through an EMAM system has been investigated in this article. The article aims to identify the standoff distance for printing aluminum 5356 in EMAM using induction heating ( Figure 1 ). In induction heating-based AM, it is crucial to identify the standoff distance between the extruder and substrate to maintain a constant extruder tip temperature and ensure a consistent liquid/solid fraction ratio for uniform material deposition. The approach adopted in this article is to perform electromagnetic and thermal multifield coupling model simulations of extruder with the substrate through a two-dimensional axe-symmetrical model using COMSOL multiphysics. The simulation model analyzed the extruder tip temperature at variable standoff distance cases during extruder heating and material deposition processes. A practical approach for thermal cartography has been used to identify extruder tip temperature during experimentation using an infrared imager. The extruder tip temperature results obtained through simulation have been compared with experimental results and found to be in close agreement with each other. A favorable temperature range of 575–625 °C is obtained through a standoff distance of 2.0 mm compared to other standoff distances taken for the study.

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Rapid Thermal Treatment of Oriented Microstructures to Generate Fine Globular Grains

Jaishankar,

Yao,

Zhou

2024

JOM

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Semisolid heat treatment processing window of Pb-40% Sn alloy for feedstock in the 3D printing thixo-forming process

Cited by 9 publications

References 34 publications

An Overview on the Process Development and the Formation of Non-Dendritic Microstructure in Semi-Solid Processing of Metallic Materials

An Overview on the Process Development and the Formation of Non-Dendritic Microstructure in Semi-Solid Processing of Metallic Materials

Effect of standoff distance on printability of aluminum 5356 alloy through extrusion-based metal additive manufacturing using induction heating

Rapid Thermal Treatment of Oriented Microstructures to Generate Fine Globular Grains

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