Publicação: Continuous production of metal matrix composites from the semisolid state
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Continuous strip metal matrix composite (MMC) casting of 0.3 mm diameter hard-drawn stainless steel (316L) wire in a quasi-eutectic SnPb (64Sn36Pb) matrix was performed by a two-roll melt drag processing (TRMDping) method, with the wire being dragged through a semisolid puddle with a fibre contact time of approximately 0.2 s. A slag weir placed at the nozzle contained two wire guide holes: one located near the upper roll, and the other located between the rolls. A successful continuous composite strip casting with good fibre alignment was achieved by inserting and embedding the wire into the matrix using the guide hole between the rolls. Degeneration of eutectic/dendrite structures led to the formation of globular structures. The occurrence and formation mechanisms of cracks, de-lamination and voids in the matrix were discussed. TRMDping is economically viable and has significant benefits over other MMC fabrication methods. © (2013) Trans Tech Publications, Switzerland.
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Metal matrix composites, Metallic fibres, SnPb alloys, Strip casting, Contact time, Continuous production, Fabrication method, Formation mechanism, Globular structure, Melt drag, Semi-solid state, Sn-Pb alloys, Strip Casting, Alloys, Slags, Strip metal, Wire, Metallic matrix composites
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Inglês
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Diffusion and Defect Data Pt.B: Solid State Phenomena, v. 192-193, p. 83-88.
