J. Mater. Sci. Technol. ›› 2018, Vol. 34 ›› Issue (9): 1580-1591.DOI: 10.1016/j.jmst.2018.03.004
• Orginal Article • Previous Articles Next Articles
Mohamed M. El-Sayed Selemanab*(), Mohamed M.Z. Ahmedabc, Sabbah Atayaabd
Received:
2018-01-19
Revised:
2018-02-21
Accepted:
2018-03-05
Online:
2018-09-20
Published:
2018-09-25
Contact:
M. El-Sayed Seleman Mohamed
Mohamed M. El-Sayed Seleman, Mohamed M.Z. Ahmed, Sabbah Ataya. Microstructure and mechanical properties of hot extruded 6016 aluminum alloy/graphite composites[J]. J. Mater. Sci. Technol., 2018, 34(9): 1580-1591.
Si | Mg | V | Fe | Mn | Cr | Zn | Cu | Ti | Al |
---|---|---|---|---|---|---|---|---|---|
1.50 | 0.50 | 0.03 | 0.79 | 0.10 | 0.14 | 0.02 | 0.03 | 0.03 | Bal. |
Table 1 Chemical composition of AA6016 Al alloy powder (wt%).
Si | Mg | V | Fe | Mn | Cr | Zn | Cu | Ti | Al |
---|---|---|---|---|---|---|---|---|---|
1.50 | 0.50 | 0.03 | 0.79 | 0.10 | 0.14 | 0.02 | 0.03 | 0.03 | Bal. |
Fig. 5. SEM micrographs of (a) the cross section hot extruded base material, and (b) same as (a) but at high magnification with different analysis mode (ETD), (c) and (d) represent the EDS spot analysis for points 1 and 2, respectively.
Fig. 6. SEM micrographs of (a) the longitudinal and (b) cross section of Al/5 wt.% graphite composite. (c) and (d) represent the EDS spot analysis for points 1 and 2, respectively.
Fig. 7. (a) SEM micrograph of hot extruded Al/10 wt.% graphite composite, (b) collected elemental map of selected area in (a), and (c) represents the detected elements in wt.%.
Fig. 10. (a) Compressive strength (σC) and (b) reduction in height (εC) against graphite content for hot extruded 6016 Al matrix alloy and Al/graphite composites.
Fig. 11. Tensile properties; (a) ultimate tensile stress (σUTS), fracture stress (σFr) and yield stress (σY), and (b) tensile fracture strain (εFr) of the extruded 6016 Al matrix alloy and the Al/graphite composites as a function of graphite content.
Fig. 12. Fracture surfaces of the tensile tested samples of hot extruded materials (a) graphite free, (b) 5 wt%. graphite, (c) 10 wt%. graphite, (d) 15 wt% graphite, (e) 20 wt% graphite, and (f) 1 and 2 selected areas from (e) in ETD mode and elemental map, respectively.
Fig. 14. Volume loss against graphite content (in wt.%) at constant wear load of 3 N and constant sliding distance of 2.68 km for the Al/graphite composites.
Fig. 15. Wear resistance against graphite content (in wt.%) at constant wear load of 3 N and constant sliding distance of 2.68 km for the Al/graphite composites.
Fig. 17. SEM micrographs of collected debris from (a) AA6016 Al alloy and (b) A1/20 wt.% graphite composite generated during wear under 3 N and 2.68 km.
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