1. SAE, Aerospace Material Specification, AMS4945, 2011, p 3.
2. G. W. Harruff, J. Vander Velden, W. G. Nelson, and W. Spurr, W. Quist, Final report No. FAA-SS-72-60 to the Federal Aviation Administration under Contract No. DOT-FA-SS-71-12, October 1972.
3. R.R. Boyer, Mater. Sci. Eng. A 213(1), 103 (1996).
4. W. Miranda, G. Takiguchi, T. Shimabukuro, L. McLennan, C. Agajanian, L. Quintero, D. Mismar, J. Abdulla, C. Andrews, M. Hahn, E. Fodran, E.W. Lee, H. Garmestani, R.D. Conner, D. Brick, J. Ogren, and O.S. Es-Said, Mater. Eng. Perform 20, 1206 (2011).
5. K.O. Yg, S.L. Chong, and S.H. Dong, Scripta Mater 58, 1094 (2008).