Mechanical Behavior and Microstructure of WCu Alloy under Hot Compression

Considering the application of WCu alloy at elevated temperature, hot compression was applied on WCu alloy and W skeleton to analyze the microstructure and mechanical behaviors at different temperatures and strain rates. The results show that the stress-strain behavior of WCu alloy is affected mainly by the temperature. The sintering necks disappear mostly after hot compression. The plastic flow of WCu alloy appears at 300 °C while W particles are mostly homogeneous approximately at 900 °C. In addition, the strength of W skeleton declines slightly at high strain rate, while round grains and cracking appear at the substructure of W particle under different strain rates.