By Kumar Jata, Eui Whee Lee, William Frazier, Nack J. Kim
This court cases quantity from the 2001 TMS Annual assembly & Exhibition covers advances made within the zone of clinical realizing of technological program of light-weight alloys. Papers specialize in primary technological know-how in addition to program and focus on clinical advances in aluminum, magnesium, titanium, and beryllium alloys and their composites. Processing, structure-property courting, failure mechanisms, and complicated becoming a member of subject matters also are mentioned.
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20 T. , Japan J. Light Metals, 23 (1973), pp. 17-25. R. D. Thesis, Georgia Institute of Technology, Atlanta, GA, USA, 1991). 22 K. D. Thesis, Georgia Institute of Technology, Atlanta, GA, USA, 1991). 23 R. Hyland, "Homogeneous Nucleation Kinetics of AI3SC in a Dilute Al-Sc Alloy", Met. Trans. A, 23A (July 1992), pp. 1947-1955. 24 N. Sano, Y Hasegawa, K. Hono, H. W. Pickering, T. Sakurai, J. Phys. colloq. C6 Suppl. 11, (1987), pp. 337-342. 25 Drits, "Homogenization of Alloys in the System Al-Mg-Sc", Metals Sei.
R. D. Thesis, Georgia Institute of Technology, Atlanta, GA, USA, 1991). 22 K. D. Thesis, Georgia Institute of Technology, Atlanta, GA, USA, 1991). 23 R. Hyland, "Homogeneous Nucleation Kinetics of AI3SC in a Dilute Al-Sc Alloy", Met. Trans. A, 23A (July 1992), pp. 1947-1955. 24 N. Sano, Y Hasegawa, K. Hono, H. W. Pickering, T. Sakurai, J. Phys. colloq. C6 Suppl. 11, (1987), pp. 337-342. 25 Drits, "Homogenization of Alloys in the System Al-Mg-Sc", Metals Sei. and Heat Treating, 25 (1983), pp. 550-554.
2 10' 10 z 10 a 10* 10 s Time (second») 10* 10 7 Figure 2 — Precipitation curves for AI3SC and AlßZr. 7 ΙΟΟΟΑ(Κ) Figure 3 — Diffusivity of Sc and Zr in Al. Thermodynamics and kinetics of Sc in Al are compatible with current preheating practices of aluminum alloys with and without Zr. Furthermore, rapid precipitation kinetics of AI3SC, high volume fraction, and homogeneous distribution of AI3SC are favored over the slow precipitation, limited volume fraction, and often heterogeneous distribution of A^Zr [21, 22].
