LIGHTWEIGHT ALLOYS FOR AEROSPACE APPLICATIONS

This proceedings volume from the 2001 TMS Annual Meeting & Exhibition covers advances made in the area of scientific understanding of technological application of lightweight alloys. Papers focus on fundamental science as well as application and concentrate on scientific advances in aluminum, magnesium, titanium, and beryllium alloys and their composites. Processing, structure-property relationship, failure mechanisms, and advanced joining themes are also discussed.

Foreword and Acknowledgements.

ALUMINUM ALLOYS.

Precipitation Hardening – The Oldest Nanotechnology (Erhard Hornbogen

The Role of Ledge Nucleation/Migration in Ω Plate Thickening Behaviour in Al-Cu-Mg-Ag Alloys (C.R. Hutchinson, X. Fan, S.J. Pennycook and G.J. Shiflet).

Improving Recrystallization Resistance in Wrought Aluminum Alloys with Scandium Addition (Y.W. Riddle, M. McIntosh and T.H. Sanders Jr.).

Application of 3D Digital Image Processing to Quantify Fracture Micro-Mechanisms in Al 7050 Alloys (Manish Dighe, Sunit Mukherjee and Arun Gokhale).

On the Effect of Stress on Nucleation, Growth, and Coarsening of Precipitates in Age-Hardenable Alloys (B. Skrotzki and J. Murken).

Hot Deformation Mode and TMP in Aluminum Alloys (H.J. McQueen and M.E. Kassner).

Microstructural Characterization of Friction Stir Welds (Mary C. Juhas, Peter C. Collins, G.B. Viswanathan and Hamish L. Fraser).

Deformation, Fracture and Fatigue in a Dispersion Strengthened Aluminum Alloy (Anthony P. Reynolds, Bob Wheeler and Kumar V. Jata).

The Effect of Retrogression and Reaging on 7249 Aluminum Alloy (P. Fleck, K. Koziar, G. Davila, H. Pech, E. Fromer, J. Foyos, E.W. Lee and O.S. Es-Said).

ALUMINUM -LITHIUM ALLOYS.

Grain Boundary Corrosion and Stress Corrosion Cracking Studies of Al-Li-Cu Alloy AF/C458 (R.G. Buchhei, D. Mathur and P.I. Gouma).

Localized Corrosion Mechanisms of Al-Li-Cu Alloy AF/C458 After Interrupted Quenching from Solutionizing Temperatures (P.I. Gouma, J.E. Kertz and R.G. Buchheit).

Aluminum-LithiumAlloys (J. Fragomeni, R. Wheeler, K.V. Jata and S. Geoffrey).

Effect of Friction Stir Welding on the Superplastic Behavior of Weldalite Alloys (H. Salem, A. Reynolds and J. Lyons).

On the Effect of Thermal Exposure on the Mechanical Properties of 2297 Plates (E. Acosta, O. Garcia, A. Dakessian, K. Aung Ra, J. Torroledo, A. Tsang, M. Hahn, J. Foyos, J. Ogren, A. Zadmehr, H. Gamestanis and O.S. Es-Said).

TITANIUM ALLOYS.

The Effect of Crystal Orientation and Boundary Misorientation on Tensile Boundary Cavitation During Hot Tension Deformation of Ti-6Al-4V (Thomas R. Bieler and S.L. Semiatin).

Processing and Properties of Gamma Titanium Aluminides and Their Potential for Aerospace Applications (J.D.H. Paul, M. Oehring, F. Appeal and H. Clemens).

Metallurgical and Fabrication Factors Relevant to Fracture Mechanisms of Titanium-Aluminide Intermetallic Alloys (K. Nikbin).

Dwell-Fatigue Behavior of Ti-6Al-2Sn-4Zr-2Mo-0.1Si Alloy (V. Sinha, M.J. Mills and J.C. Williams).

Characterization of Microstructural Evolution in a Ti-6Al-4V Friction Stir Weld (Mary C. Juhas, G.B. Viswanathan and Hamish L. Fraser).

Microstructural Evolution During Hot Working of Ti-6Al-4V at High Strain Rates (Seshacharyulu T., Steve C. Medeiros, William G. Frazier and Prasad Y.V. R.K.).

The Application of a Novel Technique to Examine Sub-&#beta; Transus Isothermal

Forging of Titanium Alloys (Martin Jackson, Richard Dashwood, Leo Christodoulou and Harvey Flower).

Stress Corrosion Cracking of &#alpha;-Ti in a Methanold Solution (X.Z. Guo, K.W. Gao, L.J. Qiao and W.Y. Chu).

Investment Casting of Titanium Alloys with CaO Crucible and CaZrO3 Mold (S.K. Kim, T.K. Kim, M.G. Kim, T.W. Hong and J.Y. Kim).

COMPOSITES.

Compressive Behavior of Ti-6Al-4V/TiC Layered Composites: Experiments and Modeling (A.J. Wagoner Johnson, C.L. Briant, C.W. Bull and K.S. Kumar).

High Ductility Cast Aluminum Beryllium Alloys (Nancy F. Levoy and William T. Nachtrab).

Characterization of Reinforcing Particle Size Distribution in a Friction Stir Welded Al-SiC Extrusion (S.C. Baxter and A.P. Reynolds).

In-Situ Formation of AlN Reinforced Al Alloy Composites Using Ammonia (Qingjun Zheng, Banqiu Wu and Ramana G. Reddy).

Author Index.

Subject Index.