Revealing the mechanism of extraordinary ductility in the 75W-25Cu composite at elevated temperatures
Description
The density of the 75W-25Cu composite is measured using Archimedes' immersion method in anhydrous ethanol. In Fig.1, The SEM images show the content and phase distribution of the initial 75W-25Cu composite. The Fig.2 shows the tensile properties of 75W-25Cu composite at ambient and elevated temperatures. Fig.3 is the fracture morphology of 75W-25Cu composite at 25 ℃, 200 ℃ and 1000 ℃. In Figs.4-6, EBSD， TEM and ECCI are conducted to investigate the mechanism of the atypical increase of the fracture strain at 200 ℃. Fig.7 shows the stress and strain partitioning between the W and Cu phases. The high-temperature mechanical properties of W-Cu composites are summarized in Fig.8.
Files
Institutions
Categories
Funding
National Natural Science Foundation
No.52103358
National Natural Science Foundation
No.52301126
Natural Science Foundation of Jiangsu Province
No. BK20210726
Science Center for Gas Turbine Project
No. P2021-A-Ⅳ-001-003
Career Development Fund
No. C222812017
Young Individual Research Grant
No. M22K3c0096