Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 587, Issue -, Pages 185-191Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2013.08.056
Keywords
Austenitic stainless steels; Equal-channel angular pressing (ECAP); Deformation twins; Strength; Ductility
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Funding
- National Natural Science Foundation of China (NSFC) [50890173, 50931005, 51301179, 51331007]
- National Basic Research Program of China [2010CB631006, 2012CB619101]
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Two austenitic stainless steels were processed by equal-channel angular pressing to systematically investigate the influences of alloying nitrogen and severe plastic deformation on the strength and ductility. With increasing the number of ECAP pass and adding nitrogen element, the density of deformation twins increased. It is shown that the two steels exhibit a similar general trend that the strength increases and the ductility decreases with increasing the deformation strain, but an enhanced strength-ductility synergy can be achieved by adding nitrogen element. (C) 2013 Published by Elsevier B.V.
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