RT Journal Article
T1 Deformation-Controlled Design of Metallic Nanocomposites
A1 Yavas, Hakan
A1 Fraile, Alberto
A1 Huminiuc, Teodor
A1 Sener Sen, Huseyin
A1 Frutos Torres, Emilio
A1 Polcar, Tomaš
AB Achieving the theoretical strength of a metallic alloy material is a demanding task that usually requires utilizing one or more of the well-established routes: (1) Decreasing the grain size to stop or slow down the dislocation mobility, (2) adding external barriers to dislocation pathways, (3) altering the crystal structure, or (4) combining two of the previous discrete strategies, that is, implementing crystal seeds into an amorphous matrix. Each of the outlined methods has clear limitations; hence, further improvements are required. We present a unique approach that envelops all the different strength-building strategies together with a new phenomenon–phase transition. We simulated the plastic deformation of a Zr–Nb nanolayered alloy using molecular dynamics and ab initio methods and observed the transition of Zr from hexagonal close-packed to face-centered cubic and then to body-cenetered cubic during compression. The alloy, which was prepared by magnetron sputtering, exhibited near-theoretical hardness (10.8 GPa) and the predicted transition of the Zr structure was confirmed. Therefore, we have identified a new route for improving the hardness of metallic alloys.
PB ACS Publications
YR 2019
FD 2019-11-15
LK https://hdl.handle.net/20.500.14352/114849
UL https://hdl.handle.net/20.500.14352/114849
LA eng
NO Deformation-Controlled Design of Metallic Nanocomposites Hakan Yavas, Alberto Fraile, Teodor Huminiuc, Huseyin Sener Sen, Emilio Frutos, and Tomas Polcar ACS Applied Materials & Interfaces 2019 11 (49), 46296-46302 DOI: 10.1021/acsami.9b12235
NO Ministerio de Educación, Formación Profesional y Deportes
DS Docta Complutense
RD 6 abr 2025