High dislocation density–induced large ductility in deformed and partitioned steels
Top Cited Papers
- 8 September 2017
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 357 (6355), 1029-1032
- https://doi.org/10.1126/science.aan0177
Abstract
A ductile steel shows its strength: Many industrial applications require materials to have high strength while remaining pliable, or ductile. However, the microstructure that increases strength tends to reduce ductility. He et al. used a processing mechanism to create a “forest” of line defects in manganese steel. This deformed and partitioned steel was produced by cold-rolling and low-temperature annealing and contained a dislocation network that improved both strength and ductility. Science , this issue p. 1029Keywords
Funding Information
- Natural Science Foundation of China (award302813, U1560204)
- Natural Science Foundation of China (award302815, U1460203)
- Research Grants Council of Hong Kong (award302814, 712713;17203014;17255016)
- Ministry of Science and Technology of Republic of China (award302816, MOST-104-2218-E-002-022-MY3)
This publication has 55 references indexed in Scilit:
- Heterogeneous lamella structure unites ultrafine-grain strength with coarse-grain ductilityProceedings of the National Academy of Sciences of the United States of America, 2015
- Evading the strength–ductility trade-off dilemma in steel through gradient hierarchical nanotwinsNature Communications, 2014
- Microstructure and strengthening mechanisms in cold-drawn pearlitic steel wireActa Materialia, 2011
- Dislocation nucleation governed softening and maximum strength in nano-twinned metalsNature, 2010
- Strengthening Materials by Engineering Coherent Internal Boundaries at the NanoscaleScience, 2009
- Revealing the Maximum Strength in Nanotwinned CopperScience, 2009
- Ultrahigh Strength and High Electrical Conductivity in CopperScience, 2004
- High tensile ductility in a nanostructured metalNature, 2002
- Softening of nanocrystalline metals at very small grain sizesNature, 1998
- The mechanism of plastic deformation of crystals. Part I.—TheoreticalProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1934