Abstract
This paper reviewed several recent progresses of the new powder metallurgy technology known as flake powder metallurgy (FPM) including different processing routes, conventional FPM (C-FPM), slurry blending (SB), shift-speed ball milling (SSBM), and high-shear pre-dispersion and SSBM (HSPD/SSBM). The name of FPM was derived from the use of flake metal powders obtained by low-speed ball milling (LSBM) from spherical powder. In this case, the uniformity of reinforcement distribution leads to increased strength and ductility. Powder is the basic unit in PM, especially advanced PM, and its control is key to various new PM technologies. The FPM is a typical method for finely controlling the powder shape through low-energy ball milling (LEBM) to realize the preparation of advanced material structures. The present paper represents a review of the main results of research on FPM and indicates the potential for future studies devoted to the optimization of this processing route.
Highlights
With the rapid development of metal matrix composites (MMCs) and especially aluminum matrix composites (AMCs), traditional casting, infiltration, plastic forming, and other methods showed a limited ability to meet the requirements of preparation and processing of new aluminum matrix composites
Many efforts such as powder metallurgy (PM) [1,2,3], severe plastic deformation (SPD) [4,5,6,7,8], nanoscale dispersion (NSD) [9,10], in situ chemical vapor deposition (CVD) [11,12], and ball milling followed by post-sintering processes such as forging, extrusion, or rolling [13,14,15,16,17,18,19] have been undertaken to fabricate MMCs, especially AMCs
Metal powders are blended with reinforcements by means of techniques such as conventional flake powder metallurgy (FPM) (C-FPM) [35,47,54], slurry blending (SB), vapor-based synthesis, shift-speed ball milling (SSBM), and high-shear pre-dispersion and SSBM (HSPD/SSBM), which are followed by various consolidation routes of the mixture such as hot extrusion [27,55], spark plasma sintering [47,56,57], friction stir processing [58,59], hot rolling [19,46,60], and others [5,36]
Summary
With the rapid development of metal matrix composites (MMCs) and especially aluminum matrix composites (AMCs), traditional casting, infiltration, plastic forming, and other methods showed a limited ability to meet the requirements of preparation and processing of new aluminum matrix composites. Metal powders are blended with reinforcements by means of techniques such as conventional FPM (C-FPM) [35,47,54], slurry blending (SB), vapor-based synthesis, shift-speed ball milling (SSBM), and high-shear pre-dispersion and SSBM (HSPD/SSBM), which are followed by various consolidation routes of the mixture such as hot extrusion [27,55], spark plasma sintering [47,56,57], friction stir processing [58,59], hot rolling [19,46,60], and others [5,36].
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