High Strength and High Uniform Ductility in a Severely Deformed Iron Alloy by Lattice Softening and Multimodal-structure Formation
作者： Kaveh Edalati , Tadahiko Furuta , Takeshi Daio , Shigeru Kuramoto , Zenji Horita
DOI: 10.1080/21663831.2015.1050126
关键词:
摘要: Despite high strength of nanostructured alloys, they usually exhibit poor uniform ductility. For many applications, it is an important issue to design new alloys which have both and In this study, Fe–Ni–Al–C alloy with ultrahigh tensile 1.9–2.2 GPa ductility 16–19% was developed by concurrent employment several strategies: (i) appropriate choice chemical compositions for lattice softening, (ii) severe plastic deformation using the high-pressure torsion method grain refinement, (iii) control strain level multimodal-structure formation composed equiaxed nanograins, lamellar coarse grains fine precipitates.
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