@article{741f41355e804c34a386320c1e99857d,
title = "A strategy for enhancing the mechanical property of the precipitation-strengthened medium-entropy alloy",
abstract = "Medium-entropy alloys strengthened by the L12-type coherent precipitates were recently proposed, whereas the mechanical property still needs to be improved. Here, we demonstrated a strategy for notably improving the strength of the representative (CoCrNi)94Ti3Al3 alloy, in which the refinement of grain structures and the promotion of precipitation were concurrently achieved by pre-strain followed by aging. A refined grain structure containing incoherent σ-precipitates and a large number of coherent L12-precipitates was formed, which enhances the yield strength and ultimate tensile strength up to 1431 MPa and 1683 MPa respectively. Furthermore, decreasing pre-strain temperature or increasing strain further aids the enhancement. The present study opens an avenue for fabricating high-performance precipitation-strengthened alloys.",
keywords = "Annealing, Mechanical property, Medium-entropy alloy, Pre-straining, Precipitation, Ultrafine structure",
author = "Yi, {Hai Long} and Daixiu Wei and Xie, {Ren Yi} and Zhang, {Yi Fan} and Hidemi Kato",
note = "Funding Information: This work was supported by the National Natural Science Foundation of China ( 51674079 ) and China Postdoctoral Science Foundation ( 2016M600211 ). This work was partly supported by Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) KAKENHI (grant number 17K17609 , 19K14838 , and 21K03766 ), the Core Research Cluster of Materials Science Fusion Research project (No. J180002408 ), and the {\textquoteleft}Creation of Life Innovation Materials for Interdisciplinary and International Researcher Development{\textquoteright} project, Tohoku University, Japan. Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",
year = "2021",
month = jul,
day = "5",
doi = "10.1016/j.msea.2021.141390",
language = "English",
volume = "819",
journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",
issn = "0921-5093",
publisher = "Elsevier BV",
}
