The microstructure, hot cracking susceptibility, and mechanical properties of a novel Al–Cu–Y alloy were investigated. The Al–4.7Cu–1.6Y alloy demonstrated very good casting properties, hot cracking susceptibility that is similar to Al–Si–Mg alloys. Analysis of the solidification process showed that the primary Al solidification is followed by the eutectic reaction Liquid→τ1(Al8Cu4Y)+Al and the peritectic reactions Liquid+τ6(Al,Cu)11Y3)→Al+τ1(Al8Cu4Y) (612°C) and Liquid+η(AlCu)→τ1(Al8Cu4Y)+θ(Al2Cu) (595°C). The τ1(Al8Cu4Y) eutectic phase demonstrated high thermal stability during homogenisation treatment. The recrystallisation temperature was in the range 250–350°C after rolling with previous quenching at 540 and 590°C and without heat treatment. The recommended annealing mode for material in the as-rolled condition is 100°C for 1 h: YS = 273 MPa, UTS = 305 MPa and El. = 6.6%.
NovikovII.Goryachelomkost tsvetnykh metallov i splavov (hot shortness of non-ferrous metals and alloys). Moscow: Nauka; 1966.
2.
EskinDG, SuyitnoLK, KatgermanL.Mechanical properties in the semi-solid state and hot tearing of aluminium alloys. Prog Mater Sci. 2004;49:629–711. doi: 10.1016/S0079-6425(03)00037-9
3.
ZolotorevskyVS, BelovNA, GlazoffMV.Casting aluminum alloys, alcoa technical center. New Kensington ( PA): Alcoa Center; 2007; p. 530.
4.
ASM HANDBOOK. Properties and selection: nonferrous alloys and Special-Purpose materials. V.2. The Materials Information Company; 2010.
5.
ZolotorevskiyVS, PozdniakovAV.Determining the hot cracking index of Al-Si-Cu-Mg casting alloys calculated using the effective solidification range. Int J Cast Met Res. 2014;27(4):193–198. doi: 10.1179/1743133613Y.0000000096
6.
ZolotorevskiyVS, PozdniakovAV, ChuryumovAY.Search for promising compositions for developing new multiphase casting alloys based on Al-Cu-Mg matrix using thermodynamic calculations and mathematic simulation. Phys Met Metall. 2012;113(11):1052–1060. doi: 10.1134/S0031918X12110154
7.
BelovNA, KhvanAV, AlabinAN.Microstructure and phase composition of Al-Ce-Cu alloys in the Al-rich corner. Mater Sci Forum. 2006;519-521(PART 1):395–400.
8.
BelovNA, KhvanAV.The ternary Al–Ce–Cu phase diagram in the aluminum-rich corner. Acta Mater. 2007;55:5473–5482. doi: 10.1016/j.actamat.2007.06.009
9.
ZhangY, GaoH, KuaiY, Effects of Y additions on the precipitation and recrystallization of Al–Zr alloys. Mater Charact. 2013;86:1–8. doi: 10.1016/j.matchar.2013.09.004
10.
PozdnyakovAV, OsipenkovaAA, PopovDA, Effect of low additions of Y, Sm, Gd, Hf and Er on the structure and hardness of alloy Al – 0.2% Zr – 0.1% Sc. Met Sci Heat Treat. 2017;58(9-10):537–542. doi: 10.1007/s11041-017-0050-z
11.
PozdniakovAV, Aytmagambetov, MakhovSV, Effect of impurities of Fe and Si on the structure and strengthening upon annealing of the Al–0.2% Zr–0.1% Sc alloys with and without Y additive. Phys Met Metall. 2017;118(5):479–484. doi: 10.1134/S0031918X17050118
12.
LiM, WangH, WeiZ, The effect of Y on the hot-tearing resistance of Al–5wt.% Cu based alloy. Mater Des. 2010;31:2483–2487. doi: 10.1016/j.matdes.2009.11.044
PozdniakovAV, ZolotorevskiyVS, MamzurinaOI.Determining hot cracking index of Al–Mg–Zn casting alloys calculated using effective solidification range. Int J Cast Met Res. 2015;28(5):318–321. doi: 10.1179/1743133615Y.0000000029
19.
YunusovI, GanievIN.Quasi-binary sections of the Al-Cu-Y system. Russ Metall. 1988;4:204–205.
Registration Record of Aluminum Association Alloy Designations and Chemical Composition Limits for Aluminum Alloys in the Form of Casting and Ingot. The Aluminum Association, Inc. Revised, January, 1989.
22.
HumphreysFJ, HatherlyM.Recrystallization and related annealing phenomena. Oxford: Pergamon Press; 1995.
23.
NesE, WertJA.Modeling of recrystallization in alloys with a bimodal particle size distribution. Scr Metall. 1984;18:1433–1438. doi: 10.1016/0036-9748(84)90381-8
24.
ØrsundR, NesE.A model for the nucleation of recrystallization from particles: the texture aspect. Scr Metall. 1988;22:671–676. doi: 10.1016/S0036-9748(88)80180-7
25.
MikhaylovskayaAV, RyazantsevaMA, PortnoyVK.Effect of eutectic particles on the grain size control and the superplasticity of aluminium alloys. Mater Sci Eng A. 2011;528:7306–7309. doi: 10.1016/j.msea.2011.06.042
