Abstract
An Al-5.8Mg-0.4Mn-0.35(Sc+Zr) (mass fraction, %) alloy sheet was prepared using water chilling copper mould ingot metallurgy processing which was protected by active flux. The influence of stabilizing annealing on mechanical properties and microstructure of the cold rolling sheet was studied. The results show that the strength and hardness of the alloy decrease, while the elongation increases with increasing the stabilizing annealing temperature. With the increase of stabilizing annealing time, the strength and hardness of the alloy drop slightly but its ductility exhibits no change. Partial recovery and recrystallization orderly occur with the increase of annealing temperature during stabilizing treatment. Only different degrees of recovery occur in the alloys annealed below 400 °C for 1 h. Partial recrystallization occurs after annealed at 450 °C for 1 h. By annealing at 300 °C for 1 h, the alloy can obtain the optimum application values of σ b, σ 0.2 and δ, which are 436 MPa, 327 MPa and 16.7%, respectively.
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LATHABAI S, LLOYD P G. The effect of scandium on the microstructure, mechanical properties and weldability of a cast Al-Mg alloy [J]. Acta Materialia, 2002, 50(17): 4275–4292.
KUMAR N, MISHRA R S, HUSKAMP CS, SANKARAN K K. Critical grain size for change in deformation behavior in ultrafine grained Al-Mg-Sc alloy [J]. Scripta Materialia, 2011, 64(6): 576–579.
LEE S, UTSUNOMIYA A, AKAMATSU H, NEISHI K, FURUKAWA M, HORITA Z, LANGDON T G. Influence of scandium and zirconium on grain stability and superplastic ductilities in ultrafine-grained Al-Mg alloys [J]. Acta Materialia, 2002, 50(3): 553–564.
MAENG D Y, LEE J H, HONG S I. The effect of transition elements on the superplastic behavior of Al-Mg alloys [J]. Materials Science and Engineering A, 2003, 357(1/2): 188–195.
DU Gang, YAN De-sheng, RONG Li-jian. Influence of intermediate annealing temperatures on mechanical properties of repeatedly cold-rolled Al-Mg-Sc-Zr alloy [J]. Acta Metallurgica Sinica, 2008, 44(10): 1209–1212.
HE Zhen-bo. Research on the structure and properties of welding joint for alloy Al-Mg-(Sc, Zr) [J]. Light Alloy Fabricaton Technology, 2006, 34(8): 44–47.
CHEN Su-li, JIANG Feng, YIN Zhi-min, LEI Xue-feng, NIE Bo. Microstructure and properties of Al-Mg-Sc alloy weld joints filled with Al-Mg-Zr and Al-Mg-Zr-Sc weld wires [J]. The Chinese Journal of Nonferrous Metals, 2006,16(5): 835–840. (in Chinese)
PENG Yong-yi, YIN Zhi-min, LEI Xue-feng, PAN Qing-lin, HE Zhen-bo. Microstructure and properties of friction stir welded joints of Al-Mg-Sc alloy plates [J]. Rare Metal Materials and Engineering, 2011, 40(2): 201–205. (in Chinese)
ROUMINA R, SINCLAIR C W. Recovery kinetics in the presence of precipitates: The softening response of an Al-Mg-Sc alloy [J]. Acta Materialia, 2010, 58(1): 111–121.
MARQUIS E A, SEIDMAN D N. Coarsening kinetics of nanoscale Al3Sc precipitates in an Al-Mg-Sc alloy [J]. Acta Materialia, 2005, 53(15): 4259–4268.
NIE Bo, YIN Zhi-min, JIANG Feng, JIANG Chun-li, CONG Fu-guan. Influence of stabilizing annealing on tensile property and exfoliation corrosion resistance of Al-Mg-Sc alloy [J]. Transactions of Materials and Heat Treatment, 2008, 29(3): 58–61.
SMOLA B, STULIKOVA I, OCENASEK V, PELCOVA J, NEUBERT V. Annealing effects in Al-Sc alloys [J]. Materials Science and Engineering A, 2007, 462(1/2): 370–374.
PENG Yong-yi, YIN Zhi-min, YANG Jin, DU Yu-xuan. In-plane anisotropy of 1545 aluminum alloy sheet [J]. Transactions of Nonferrous Metals Society of China, 2005, 15(1): 87–92.
CHEN Xian-ming, PAN Qing-lin, ZHOU Chang-rong, YIN Zhi-min. Effects of minor scandium addition on microstructure and tensile properties of Al-Mg-Mn alloy [J]. Chinese Journal of Rare Metals, 2003, 27(3): 403–405.
CLOUET E, BARBU A, LAE L, MARTIN G. Precipitation kinetics of Al3Zr and Al3Sc in aluminum alloys modeled with cluster dynamics [J]. Acta Materialia, 2005, 53(8): 2313–2325.
FAZELI F, POOLE W J, SINCLAIR C W. Modeling the effect of Al3Sc precipitates on the yield stress and work hardening of an Al-Mg-Sc alloy [J]. Acta Materialia, 2008, 56(9): 1909–1918.
DU Gang, YANG Wen, YAN De-sheng, RONG Li-jian. Precipitation behaviors of primary phases in Al-Mg-Sc-Zr aIloy [J]. The Chinese Journal of Nonferrous Metals, 2010, 20(6): 1083–1087. (in Chinese)
MARQUIES E A, SEIDMAN D N. Nanoscale structural evolution of Al3Sc precipitates in Al-Sc alloys [J]. Acta Materialia, 2001, 49(11): 1909–1919.
ZHAO Wei-tao, YAN De-sheng, RONG Li-jian. TEM observation of annealing microstructure of deformed Al-Mg-Sc-Zr alloy [J]. Acta Metallurgica Sinica, 2005, 41(11l): 1150–1154. (in Chinese)
JIANG Feng, WEN Kang, JIAN Hai-gen, JIANG Chun-li, ZHAO Juan, JIANG Long. Existing form and action mechanism of minor scandium and zirconium in Al-Cu-Mg alloy [J]. Journal of Central South University of Technology, 2010, 17(1): 19–23.
IWAMUR S, NAKAYAMA M, MIURS Y. Coherency between Al3Sc precipitate and the matrix in Al alloys containing Sc [J]. Materials Science and Forum, 2002, 396(402): 1151–1156.
TANG Bi-yu, LI Dong-lin, CHEN Ping, YI Jian-xiong, WEN Li, PENG Li-ming, DING Wen-jiang. The thermal properties of Al-Mg-TM (TM=Sc, Zr): Ab initio study [J]. Solid State Sciences, 2010, 12(5): 845–850.
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Foundation item: Project(2006AA03Z523) supported by the National High Technology Research and Development Program of China
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Chen, Q., Pan, Ql., Wang, Y. et al. Microstructure and mechanical properties of Al-5.8Mg-Mn-Sc-Zr alloy after annealing treatment. J. Cent. South Univ. 19, 1785–1790 (2012). https://doi.org/10.1007/s11771-012-1208-x
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DOI: https://doi.org/10.1007/s11771-012-1208-x