Effect of Mo on the High-Temperature Creep Resistance and Machinability of a Recycled Al-Alloy with High Iron Impurity

Ain, W. Q.; Faisal, M. K.; Talari, Mahesh Kumar; Darham, Widyani; Ratnam, Mani Maran; Kwon, Youngeun; Kim, Nack J.; Rao, A.K. Prasada

doi:10.1007/s11665-016-2266-2

Cited by 7 publications

(1 citation statement)

References 15 publications

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“…This is a particularly unfavorable effect because such phases radically reduce ductility and strength [3]. When stress is applied, the interface between the brittle phases and the α-Al acts as a favored site for microcrack initiation and propagation, resulting in decohesion failure [4][5][6][7]. Because of this, Al scrap with an increased Fe content is hardly processable by conventional casting technologies, which is why finding a way to manage such secondary materials has become a major challenge.…”

Section: Introductionmentioning

confidence: 99%

Al-Fe Chips Processed by High-Energy Ball Milling and Spark Plasma Sintering

Kučera

Průša

Vojtěch

2017

SSP

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Typically, conventional casting technologies are employed to manufacture aluminium alloys from scrap, but during recycling iron accumulates and increases in content. Increased iron content in such alloys reduces their mechanical properties. Because powder metallurgy is able to prepare materials with a very fine microstructure, we investigated its use for the preparation of aluminium alloys with a high iron content and the required mechanical properties. We prepared an Al-Fe17 (wt. %) binary alloy using combination of mechanical working (MW), high-energy ball milling (HEBM) and spark plasma sintering (SPS). The thus-prepared samples were analyzed (XRD, XRF, SEM-EDS, compression stress-strain test) and compared to the commercially-available alloy Al-Si12-Cu1-Mg1-Ni1, which is thermally stable. While the MW followed by SPS sample showed improved plastic deformation, the combination of MW, HEBM and SPS led to the absence of plastic deformation at room temperature. However, the MW+HEBM+SPS had much higher strength (579 MPa) and possessed similar thermal stability as the commercial Al-Si12-Cu1-Mg1-Ni1.

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