Spark plasma sintering (SPS) has been used to successfully densify a 7075 aluminium alloy obtained from Alumix 431 powder. Sintering experiments were conducted at the temperature of 450 and 500°C for 2.5, 5 and 10 min. All the presented results confirm the excellent sinterability of Alumix 431 powder in vacuum during the SPS process and clearly show the effect of sintering temperatures and holding times on the densification, microstructure and mechanical properties of the obtained sintered compacts. The best results of hardness (1412 ± 39 MPa), tensile strength (345 ± 15 MPa) and compressive strength (618 ± 4 MPa) were obtained by the compacts sintered at 500°C for 5 min.
PawlickiM., DrengerT., PieszakM. and BorowskiJ.: ‘Cold upset forging joining of ultra-fine-grained aluminium and copper’, J. Mater. Process. Technol., 2015, 223, 193–202. doi: 10.1016/j.jmatprotec.2015.04.004
2.
KorbelA., BochniakW., BorowskiJ., BłażL., OstachowskiP. and ŁagodaM.: ‘Anomalies in precipitation hardening process of 7075 aluminum alloy extruded by KOBO method’, J. Mater. Process. Technol., 2015, 216, 160–168. doi: 10.1016/j.jmatprotec.2014.09.008
3.
FanK. L., HeG. Q., LiuX. S., LiuB., SheM., YuanY. L., YangY. and LuQ.: ‘Tensile and fatigue properties of gravity casting aluminum alloys for engine cylinder heads’, Mater. Sci. Eng. A, 2013, 586, 78–85. doi: 10.1016/j.msea.2013.08.016
4.
MartinJ. M. and CastroF.: ‘Liquid phase sintering of P/M aluminium alloys: effect of processing conditions’, J. Mater. Process. Technol., 2003, 143–144, 814–821. doi: 10.1016/S0924-0136(03)00335-2
5.
LaDelphaA. D. P., NeubingN. and BishopD. P.: ‘Metallurgical assessment of an emerging Al–Zn–Mg–Cu P/M alloy’, Mater. Sci. Eng. A, 2009, 520, 105–113. doi: 10.1016/j.msea.2009.05.039
6.
MacAskillI. A., LaDephaA. D. P., MilliganJ. H., FultonJ. J. and BishopD. P.: ‘Effects of cold and hot densification on the mechanical properties of a 7XXX series powder metallurgy alloy’, Powder Metall., 2009, 52, 304–310. doi: 10.1179/174329009X409723
7.
PieczonkaT., KaziorJ., Szewczyk-NykielA., HebdaM. and NykielM.: ‘Effect of atmosphere on sintering of Alumix 431D powder’, Powder Metall., 2012, 55, 354–360. doi: 10.1179/1743290112Y.0000000015
8.
HardingM. D., DonaldsonI. W., HexemerR. L.Jr, GharghouriM. A. and BishopD. P.: ‘Characterization of the microstructure, mechanical properties, and shot peening response of an industrially processed Al–Zn–Mg–Cu PM alloy’, J. Mater. Process. Technol., 2015, 221, 31–39. doi: 10.1016/j.jmatprotec.2015.02.003
9.
OlakanmiE. O., CochraneR. F. and DalgarnK. W.: ‘A review on selective laser sintering/melting (SLS/SLM) of aluminium alloy powders: processing, microstructure, and properties’, Prog. Mater. Sci., 2015, 74, 401–477. doi: 10.1016/j.pmatsci.2015.03.002
10.
ChuaA. S., BrochuM. and BishopD. P.: ‘Spark plasma sintering of prealloyed aluminium powders’, Powder Metall., 2015, 58, 51–60. doi: 10.1179/1743290114Y.0000000105
11.
RudinskyS., HendrickxP., BishopD. P. and BrochuM.: ‘Spark plasma sintering and age hardening of an Al–Zn–Mg alloy powder blend’, Mater. Sci. Eng. A, 2016, 650, 129–138. doi: 10.1016/j.msea.2015.10.029
12.
GarbiecD., JurczykM., Levintant-ZayontsN. and MościckiT.: ‘Properties of Al–Al2O3 composites synthesized by spark plasma sintering method’, Arch. Civil Mech. Eng., 2015, 15, 933–939. doi: 10.1016/j.acme.2015.02.004
13.
ZhangF., ReichM., KesslerO. and BurkelE.: ‘The potential of rapid cooling spark plasma sintering for metallic materials’, Mater. Today, 2013, 16, 192–197. doi: 10.1016/j.mattod.2013.05.005
14.
SeungI. Ch., HongS. H. and KimB. K.: ‘Spark plasma sintering behavior of nanocrystalline WC-10Co cemented carbide powders’, Mater. Sci. Eng. A, 2003, 351, 31–38. doi: 10.1016/S0921-5093(02)00605-6
15.
LiuL., HouZ., ZhangB., YeF., ZhangZ. and ZhouY.: ‘A new heating route of spark plasma sintering and its effect on alumina ceramic densification’, Mater. Sci. Eng. A, 2013, 559, 462–466. doi: 10.1016/j.msea.2012.08.126
16.
Jabbari TaleghaniM. A., Ruiz NavasE. M., SalehiM. and TorralbaJ. M.: ‘Hot deformation behaviour and flow stress prediction of 7075 aluminium alloy powder compacts during compression at elevated temperatures’, Mater. Sci. Eng. A, 2012, 534, 624–631. doi: 10.1016/j.msea.2011.12.019
17.
ZhangZ. H., WangF. Ch., LuoJ., LeeS. K. and WangL.: ‘Microstructures and mechanical properties of spark plasma sintered Al–SiC composites containing high volume fraction of SiC’, Mater. Sci. Eng. A, 2010, 527, 7235–7240. doi: 10.1016/j.msea.2010.07.043
18.
RudiantoH., JangG. J., YangS. S., KimY. J. and DlouhyI.: ‘Evaluation of sintering behavior of premix Al–Zn–Mg–Cu alloy powder’, Adv. Mater. Sci. Eng., 2015, article ID 987687, 1–8. doi: 10.1155/2015/987687
