Abstract
2014 aluminium alloy was subjected to various thermomechanical ageing (TMA) treatments which included partial peak ageing (25% and 50%), warm rolling (10% and 20%) and further ageing to peak hardness level at 160 ° C. The tensile tests reveal that TMA treatments cause a substantial improvement in tensile properties and thermal stability. The electron microscopic studies reveal that the TMA treatments affect substantially the ageing characteristics. The TMA Ib treatment yields the finest θ′ needles having longitudinal dimensions of ∼40nm. The TMA treatments also lead to precipitate-dislocation networks of different densities. It is observed that TMA IIb treatment results in the densest precipitate-dislocation tangles of all the TMA treatments. As a result, a significant improvement in the tensile properties of 2014 aluminium alloy has been observed.
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References
N. Ryum, B. Haegland andT. Lindveit,Z. Metallkde 58 (1967) 28.
N. Ryum,Acta Metall. 16 (1968) 327.
Idem, ibid. 17 (1969) 821.
H. A. Lipsitt andC. M. Sargent, Proceedings of the International Conference on Strength of Metals and Alloys (ASM, 1970) p. 937.
H. A. Lipsitt,Met. Trans 2A (1971) 1739.
S. Pattanaik, V. Srinivasan andM. L. Bhatia,Scripta Metall. 6 (1972) 191.
H. J. Rack andR. W. Krenzer,Met. Trans. 8A (1977) 335.
D. S. Thompson, S. A. Levy andD. K. Benson, Proceedings of the 3rd International Conference on Strength of Metals and Alloys, Cambridge, UK, Vol. 1 (1973) p. 119.
A. W. Thompson,Met. Trans. 8A (1977) 833.
D. S. Thompson andS. A. Levy,Light Metal Age, August (1977) 11.
E. Di Russo, M. Conserva, M. Buratti andF. Gatto,Mater. Sci. Engng 14 (1974) 23.
J. Waldman, H. Sulinski andH. Markus,Met. Trans. 5A (1974) 573.
N. E. Paton andA. W. Sommer, Proceedings of the 3rd International Conference on Strength of Metals and Alloys, Cambridge, UK Vol. 1 (1973) p. 101.
S. Singh, PhD thesis, University of Roorkee (1985) p. 119.
W. Bonfield andP. K. Datta,J. Mater. Sci. 11 (1976) 1661.
R. H. Van Stone, R. H. Merchant andJ. R. Low JR, ASTM Stp 556 (American Society for Testing and Materials, Philadelphia, Pennsylvania, 1974) p. 93.
M. R. Staker andD. L. Holt,Acta Metall. 20 (1972) 569.
J. P. Tanaka, C. A. Pampillo andJ. R. Low Jr, ASTM STP 463 (American Society for Testing and Materials, Philadelphia, Pennsylvania, 1970) 191.
R. P. Doherty andJ. W. Martin,J. Inst. Metals 91 (1963) 332.
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Singh, S., Goel, D.B. Influence of thermomechanical ageing on tensile properties of 2014 aluminium alloy. J Mater Sci 25, 3894–3900 (1990). https://doi.org/10.1007/BF00582456
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DOI: https://doi.org/10.1007/BF00582456