首页|Gas tungsten arc welding of network structured titanium matrix composite
Gas tungsten arc welding of network structured titanium matrix composite
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NSTL
Taylor & Francis
The microstructure and property evolution of TiBw/Ti6AI4V composite was investigated after gas tungsten arc welding process. The results showed that the heat affected zone (HAZ) exhibited unchanged reinforcements, while the fusion zone (FZ) exhibited refined TiBw with refined network scale. Meanwhile, the matrix in HAZ presented the transformed beta microstructure, while the refined columnar grains existed in FZ. Moreover, increasing heat input can further decrease the refined network size. Consequently, the ultimate tensile strength of the welded composite reaches 98% that of the parent composite (PC); while the yield and tensile strength at 500 degrees C are even higher than those of the PC. The refined microstructure and the transformed beta phase also lead to noticeable enhancement of the microhardness.
NSTL
Taylor & Francis
