首页|Ultrahigh strengthening effect induced by element addition in nanostructural (TiVCr)100?xWx medium entropy alloy

Ultrahigh strengthening effect induced by element addition in nanostructural (TiVCr)100?xWx medium entropy alloy

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  • NSTL
  • Elsevier
In this work, we have investigated the effect of W addition on microstructure and mechanical properties of equiatomic TiVCr medium entropy alloy films. It is found that a transition from amorphous phase to quasicrystal and nanocrystal occurs with increasing content of W, showing an improved crystallinity of the films. Hardness drastically increases with increasing W addition and reaches the maximum value of 7.2 GPa at 16.0 at% W content, which is two times higher than that of the initial sample. Amorphous phase strengthening, solid solution and precipitation strengthening become the dominant mechanism, responsible for the ultrahigh strengthening effect.

High entropy alloysNanocompositeStrengthening effectsThin films

Zhang Z.J.、Han X.T.、Chen J.H.、Li G.J.、Shi H.Q.、Cao Z.H.、Ma Y.J.、Wang L.、Meng X.K.

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College of Materials Science and Engineering & Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites Nanjing Tech University

Institute of Materials Engineering National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences Nanjing University

National Demonstration Center for Experimental Materials Science and Engineering Education Jiangsu University of Science and Technology

2022

10.1016/j.jallcom.2021.163329

Journal of Alloys and Compounds

Journal of Alloys and Compounds

EISCI
ISSN：0925-8388
年,卷(期)：2022.899
  • 6
  • 52