ORALS

SESSION: SISAMMonAM-R5 SPD Nanomaterials	Zehetbauer International Symposium on Science of Intelligent and Sustainable Advanced Materials (4th Intl. Symp. on Science of Intelligent and Sustainable Advanced Materials (SISAM))
Mon Nov, 5 2018 / Room: Copacabana A (150/1st)
Session Chairs: Ruslan Valiev; Werner Skrotzki; Session Monitor: TBA

11:45: [SISAMMonAM02] Invited
Exploring the Paradox of Strength and Ductility
Terence G. Langdon¹ ; Roberto B. Figueiredo² ; Praveen Kumar³ ; Megumi Kawasaki⁴ ; ¹University of Southampton, Southampton, United Kingdom; ²Federal University of Minas Gerais, Belo Horizonte, Brazil; ³Indian Institute of Science, Bangalore, India; ⁴Oregon State University, Corvallis, United States;
Paper Id: 233 [Abstract]

Processing through the application of severe plastic deformation (SPD) produces exceptional grain refinement to the submicrometer or even the nanometer level. The paradox of strength and ductility was suggested several years ago [1] and has become a major topic in all studies of SPD metals. This paradox relates to the fact that metals may be strong or ductile, but generally they fail to exhibit both high strength and high ductility. Since SPD metals have very small grain sizes, it follows that the strength is usually high but the ductility is limited. This presentation examines the significance of this paradox and discusses possible procedures for at least partially alleviating the low ductility, which tends to be an inherent feature of these SPD nanomaterials.

References:
[1] R.Z.Valiev, I.V. Alexandrov, Y.T. Zhu, T.C. Lowe, "Paradox of strength and ductility in metals processed by severe plastic deformation," J. Mater. Res. Vol. 17, p. 5 (2002).