Dry sliding wear behaviors of Al–25Si–2.5Cu–1Mg alloys prepared by powder thixocasting

A multi-technique characterization of ZDDP antiwear films formed on Al (Si) alloy (A383) under various conditions

“…Much previous work has focused on the dry-sliding of Al-Si alloys [3][4][5][6], and very little on the lubrication of these alloys [7][8][9][10][11]. It is well known that the steel/aluminum couple is a difficult system to lubricate even at modest loads [7,10], and furthermore that additives added to formulated oils that protect steel and cast iron surfaces, do so by forming protective films [12,13].…”

Fabrication of metal matrix composite by semi-solid powder processing

“…A summary of various processing routes of SPP investigated by other researchers is shown in Fig. 4.1 (Young and Clyne 1986a;Young and Clyne 1986b;El Wakil 1992;Zu and Luo 2001;Hamilton, Zhu et al 2003;Chen, Yang et al 2004;Chen, Yang et al 2005b;Chen, Yang et al 2005a;Luo, Cheng et al 2005;Luo, Cheng et al 2006). In general, four basic steps are involved in SPP: powder preparation, powder precompaction, heating and semi-solid forming.…”

Development of Novel Semisolid Powder Processing for Micromanufacturing

“…A summary of various processing routes of SPP is shown in Fig. 2 [10][11][12][13][14][15][16][17][18][19]. In general, four basic steps are required: powder preparation, powder compaction, pre-heating and semisolid forming.…”

“…The powder compaction can take place at room temperature (cold pressing [15]) or at elevated temperatures (hot pressing [12,18,19]). The heating may be achieved by induction heating [18] or by direct furnace heating [12][13][14]19]. Finally, at a designed temperature, the semisolid state powders are formed into near-net shape parts.…”