Microstructure and elevated temperature properties of a refractory TaNbHfZrTi alloy

By Oleg N. Senkov, J. M. Scott, S. Senková, F. Meisenkothen, Daniel B. Miracle, Christopher Woodward. Journal of Materials Science, 2012

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Thermodynamic instability of a nanocrystalline, single-phase TiZrNbHfTa alloy and its impact on the mechanical properties (2018, background): “[19] first described these structures as a mixture of shear bands and deformation twins.”
Single-phase high-entropy alloys – an overview (2014, background): “NbMoTaW, VNbMoTaW, and TiZrNbHfTa are examples for HEAs, which possess a high-temperature strength and thermal resistance comparable to superalloys [80, 82].”
Structural-disorder and its effect on the mechanical properties in single-phase TaNbHfZr high-entropy alloys (2015, methodology): “Subsequently, refractory HEAs of lower density were investigated (W and Mo replaced with Hf, Zr, Ti and Cr) and found to possess excellent HT and ambient-temperature mechanical properties [11-13].”
Experimental and theoretical study of Ti20Zr20Hf20Nb20X20 (X = V or Cr) refractory high-entropy alloys (2014, neutral): “Since then, many other HEAs based on the refractory elements (Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and W, namely the 4th, 5th, and 6th element groups in the periodic table) have been in the focus of experimental studies [3–5,12–16], for instance TiZrHfNbTa [4,5], NbZrTiCrMo0.”
Aging behavior of the HfNbTaTiZr high entropy alloy (2018, background): “that the HfNbTaTiZr alloy (i) has the single bcc phase after homogenization treatment [10]; (ii) second phase particles can be found in the alloy after deformation at elevated temperatures or annealing [11,13].”