Study on strengthening and toughening of W _f /W composites by designing the ratio of raw W _f and coated W _f

To address the issue of brittleness of W, W f /W composite mixed with varying proportions of raw W f (W f (raw)) and Y 2 O 3 -coated W f (W f (Y 2 O 3 )) were prepared using SPS. With the combination of strong and weak interface bonding, the composite with high strength and toughness, and pseudo-ductile fracture at room temperature was eventually accomplished by designing the addition ratio of W f (raw) and W f (Y 2 O 3 ). The results showed that when the addition ratio of W f (raw) and W f (Y 2 O 3 ) were 10vol.% and 20vol.%, the flexural strength and fracture toughness of the composite exhibited the better results, which were 551.16 MPa and 7.30 MPa·m 1/2 , respectively. They were higher than the non-fiber W alloy prepared by the same process (443.59 MPa and 5.97 MPa·m 1/2 ).