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Abstract
Thermomechanical treatment (TMT) is a widely used process for effectively enhancing the mechanical properties of conventional metallic materials. This study applied TMT along with rapid annealing to a lightweight (≈5 g/cm3) Ti-rich Ti65(AlCrNb)35 medium-entropy alloy (Ti-65 MEA) to equip it with a heterogeneous structure (heterostructure). After the annealing treatment, the Ti-65 MEA exhibited a heterogenous microstructure comprising nonrecrystallized shear bands and ultrafine recrystallized grains. Remarkably, the heterostructured Ti-65 MEA had extraordinary mechanical properties (tensile strength, 1500 MPa; elongation, 25%) and ultrahigh specific strength (247 MPa cm3/g).
Original language | English |
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Article number | 100342 |
Journal | Results in Materials |
Volume | 16 |
DOIs | |
State | Published - Dec 2022 |
Keywords
- Crystal structure
- Metals and alloys
- Microstructure
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Dive into the research topics of 'Tailored rapid annealing to obtain heterostructured ultra-high-strength lightweight Ti-rich medium-entropy alloys'. Together they form a unique fingerprint.Projects
- 1 Finished
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Alloy Design and Micro/Nano-Scaled Creep Mechanism of Medium-Low Density High Entropy Alloys( III )
Jang, S.-C. (PI)
1/08/20 → 31/07/21
Project: Research