@article{88bbbb6e941b43f69d2f849c77c977ea,
title = "High dislocation density-induced large ductility in deformed and partitioned steels",
abstract = "A wide variety of industrial applications require materials with high strength and ductility. Unfortunately, the strategies for increasing material strength, such as processing to create line defects (dislocations), tend to decrease ductility. We developed a strategy to circumvent this in inexpensive, medium manganese steel. Cold rolling followed by low-temperature tempering developed steel with metastable austenite grains embedded in a highly dislocated martensite matrix. This deformed and partitioned (D and P) process produced dislocation hardening but retained high ductility, both through the glide of intensive mobile dislocations and by allowing us to control martensitic transformation. The D and P strategy should apply to any other alloy with deformation-induced martensitic transformation and provides a pathway for the development of high-strength, high-ductility materials.",
author = "He, {B. B.} and B. Hu and Yen, {H. W.} and Cheng, {G. J.} and Wang, {Z. K.} and Luo, {H. W.} and Huang, {M. X.}",
note = "Funding Information: The authors thank K. Lu for his insightful and constructive comments on this paper. M.X.H. is grateful for financial support from the Research Grants Council of Hong Kong (grant nos. 712713, 17203014, and 17255016) and the National Natural Science Foundation of China (grant no. U1560204). H.W.L. is grateful for financial support from the National Natural Science Foundation of China (grant no. U1460203). H.W.Y. acknowledges the Ministry of Science and Technology of the Republic of China for providing financial support under contract MOST-104-2218-E-002-022-MY3 and thanks the Instrumentation Center at National Taiwan University for technical support during use of the JSM 7800F PRIME high-resolution scanning electron microscope. The authors also acknowledge the Shanghai Synchrotron Radiation Facility for providing the synchrotron XRD facility at beamline no. 14 B. The present work has pending patents with application numbers 201610455155.3 and PCT/CN2016/096509 and another awarded patent, number 201410669029.9. M.X.H. supervised the study. M.X.H., B.B.H., and H.W.L. designed the study. B.B.H. and B.H. prepared the thermomechanical treatment and the mechanical tests. H.W.Y., G.J.C., and B.B.H. conducted the microstructure characterization. B.B.H., M.X.H., H.W.L., and Z.K.W. analyzed the data. B.B.H. and M.X.H. wrote the paper. The authors declare no competing financial interests. Data are available in the manuscript and supplementary materials. Funding Information: The authors thank K. Lu for his insightful and constructive comments on this paper. M.X.H. is grateful for financial support from the Research Grants Council of Hong Kong (grant nos. 712713, 17203014, and 17255016) and the National Natural Science Foundation of China (grant no. U1560204). H.W.L. is grateful for financial support from the National Natural Science Foundation of China (grant no. U1460203). H.W.Y. acknowledges the Ministry of Science and Technology of the Republic of China for providing financial support under contract MOST-104-2218-E-002-022-MY3 and thanks the Instrumentation Center at National Taiwan University for technical support during use of the JSM 7800F PRIME highresolution scanning electron microscope. The authors also acknowledge the Shanghai Synchrotron Radiation Facility for providing the synchrotron XRD facility at beamline no. 14 B. The present work has pending patents with application numbers 201610455155.3 and PCT/CN2016/096509 and another awarded patent, number 201410669029.9. M.X.H. supervised the study. M.X.H., B.B.H., and H.W.L. designed the study. B.B.H. and B.H. prepared the thermomechanical treatment and the mechanical tests. H.W.Y., G.J.C., and B.B.H. conducted the microstructure characterization. B.B.H., M.X.H., H.W.L., and Z.K.W. analyzed the data. B.B.H. and M.X.H. wrote the paper. The authors declare no competing financial interests. Data are available in the manuscript and supplementary materials. Publisher Copyright: {\textcopyright} 2017 by The American Society for Biochemistry and Molecular Biology, Inc.",
year = "2017",
month = sep,
day = "8",
doi = "10.1126/science.aan0177",
language = "English",
volume = "357",
pages = "1029--1032",
journal = "Science",
issn = "0036-8075",
publisher = "American Association for the Advancement of Science",
number = "6355",
}