Simultaneously increasing the strength and ductility of a refractory high-entropy alloy via grain refining

Chien-Chang Juan; Ming-Hung Tsai; Che-Wei Tsai; Wei-Lin Hsu; Chun-Ming Lin; Swe-Kai Chen; Su-Jien Lin; Jien-Wei Yeh

doi:10.1016/j.matlet.2016.08.060

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$Simultaneously increasing the strength and ductility of a refractory high-entropy alloy via grain refining$

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Simultaneously increasing the strength and ductility of a refractory high-entropy alloy via grain refining

Chien-Chang Juan, Ming-Hung Tsai, Che-Wei Tsai, Wei-Lin Hsu, Chun-Ming Lin, Swe-Kai Chen, Su-Jien Lin and Jien-Wei Yeh

Materials Letters, Vol.184, pp.200-203

01/12/2016

DOI: https://doi.org/10.1016/j.matlet.2016.08.060

Abstract

Hall-Petch equation

Metals and alloys

Recrystallization

Refractory high-entropy alloys

Solute-drag mechanism

The HfNbTaTiZr refractory high-entropy alloy was investigated on the grain growth kinetics and tensile properties. Grain growth at 1200–1350 °C is rather slow. The activation energy is 389 kJ/mol and the growth exponent is 3.5. The HfNbTaTiZr alloy has high strength, small work hardening and high ductility. Grain refining is found to enhance the tensile strength and ductility simultaneously.

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Title: Simultaneously increasing the strength and ductility of a refractory high-entropy alloy via grain refining
Creators - without role: Chien-Chang Juan - National Tsing Hua University
Ming-Hung Tsai - Department of Materials Science and Engineering , National Chung Hsing University
Che-Wei Tsai - Department of Materials Science and Engineering , National Tsing Hua University
Wei-Lin Hsu - National Tsing Hua University
Chun-Ming Lin - National Tsing Hua University
Swe-Kai Chen - National Tsing Hua University
Su-Jien Lin - National Tsing Hua University
Jien-Wei Yeh - Department of Materials Science and Engineering , National Tsing Hua University
Identifiers: 9957776648506774
Academic Unit: Department of Materials Science and Engineering, College of Engineering, National Tsing Hua University; National Tsing Hua University
Language: English
Resource Type: Journal article
Publication Details: Materials Letters, Vol.184, pp.200-203

Simultaneously increasing the strength and ductility of a refractory high-entropy alloy via grain refining

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