Can I read A novel ZrNbMoTaW refractory high-entropy alloy with in-situ forming heterogeneous structure on EtoBox?

A novel ZrNbMoTaW refractory high-entropy alloy with in-situ forming heterogeneous structure by Tianxin Li; Wenna Jiao; Junwei Miao; Yiping Lu; Enyu Guo; Tongmin Wang; Tingju Li; Peter K. Liaw is a Engineering article available to read on EtoBox.

What is A novel ZrNbMoTaW refractory high-entropy alloy with in-situ forming heterogeneous structure about?

NbMoTaW-based refractory high-entropy alloys (RHEAs) are now at the research frontier of advanced metallic materials due to outstanding mechanical properties at elevated temperatures. However, the poor plasticity of NbMoTaW-based RHEAs at room temperature hinders further development. The present work proposes a new strategy to tailor in-situ forming heterogeneous structures and improve the room-temperature mechanical properties of NbMoTaW-based RHEAs. A novel series of as-cast Zr x NbMoTaW (x = 0.1, 0.5, and 1, denoted by Zr0.1, Zr0.5, and Zr1, respectively) RHEAs was designed and prepared. The effect of Zr on the mechanical properties and microstructure evolution was investigated. The Zr1 alloy had a compressive yield strength of 1558 MPa and a strain of 15.8% at room temperature, superior to most reported NbMoTaW-based RHEAs. Surprisingly, the Zr1 alloy also showed an ultra-high strength at 1000 • C, which compressive yield strength was 555 MPa without fracture at the strain of 25%. Moreover, all Zr x NbMoTaW RHEAs were composed of two disordered body-centered cubic (BCC) phases. The nanoindentation results showed that the hardness of the dendrite exceeded that of the interdendri

Who reads A novel ZrNbMoTaW refractory high-entropy alloy with in-situ forming heterogeneous structure?

Author

Tianxin Li; Wenna Jiao; Junwei Miao; Yiping Lu; Enyu Guo; Tongmin Wang; Tingju Li; Peter K. Liaw

Published

2021

Language

EN

Field

Engineering (Physical Sciences)