Crystallography of a new Mn(V,Ti,Al)2O4 compositionally complex spinel oxide in a BCC compositionally complex alloy

Jiang，H.1,2; Yu，K. P.1; Liu，X. C.3; He，L. H.4,5; He，B. B.2; Huang，M. X.1

2023-12-01

10.1016/j.scriptamat.2023.115683

Scripta Materialia   Impact Factor & Quartile

1359-6462

1872-8456

The concept of compositionally complex alloy (CCA) has recently been applied in developing compositionally complex oxide (CCO). In this contribution, we discovered a new CCO with a spinel structure that is embedded in a new body-centered cubic CCA matrix. The crystal structure of the newly found CCO is characterized by neutron diffraction and high-resolution transmission electron microscopy. It is found that the chemical formula of the new CCO is Mn(V,Ti,Al)O, where the Mn atoms occupy the tetrahedral position while the V, Ti and Al atoms share the octahedral sites. The elements that take the octahedral sites are interchangeable. The mechanical behavior was characterized by nano-indentation experiments and the localized strength of CCA is effectively promoted with the existence of CCO. The present work illustrates that the combination of new CCO with new CCA matrix could be a new strategy to develop new oxide-metal composites.

Compositionally complex alloy Compositionally complex oxide Crystallography Nano-indentation Spinel structure

SCI

English

Corresponding

National Key Research and Development Program of China[2019YFA0209900];National Natural Science Foundation of China[52130102];Science, Technology and Innovation Commission of Shenzhen Municipality[JCYJ20210324120209026];National Natural Science Foundation of China[U52071173];

Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:001051862600001

PERGAMON-ELSEVIER SCIENCE LTD

MATERIALS SCIENCE

2-s2.0-85166288720

Scopus

1.Department of Mechanical Engineering,The University of Hong Kong,Pokfulam Road, Hong Kong,China
2.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Institute of Metals,College of Materials Science and Engineering,Changsha University of Science and Technology,Changsha,410114,China
4.Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing,100190,China
5.Spallation Neutron Source Science Center,Dongguan,523803,China

Jiang，H.,Yu，K. P.,Liu，X. C.,et al. Crystallography of a new Mn(V,Ti,Al)2O4 compositionally complex spinel oxide in a BCC compositionally complex alloy[J]. Scripta Materialia,2023,237.

Jiang，H.,Yu，K. P.,Liu，X. C.,He，L. H.,He，B. B.,&Huang，M. X..(2023).Crystallography of a new Mn(V,Ti,Al)2O4 compositionally complex spinel oxide in a BCC compositionally complex alloy.Scripta Materialia,237.

Jiang，H.,et al."Crystallography of a new Mn(V,Ti,Al)2O4 compositionally complex spinel oxide in a BCC compositionally complex alloy".Scripta Materialia 237(2023).