Effect of MoO3 on microstructure and mechanical properties of (Ti,Mo)Al/Al2O3 composites by in situ reactive hot pressing
Source abstract
Abstract
Abstract (Ti,Mo)Al/Al 2 O 3 composites were successfully synthesized by hot pressing based on the Ti–Al–TiO 2 –MoO 3 system. Effect of MoO 3 content on the microstructure and mechanical properties of (Ti,Mo)Al/Al 2 O 3 composites was investigated in detail. It was found that the as-fabricated samples contain TiAl, Ti 3 Al, and Al 2 O 3 , together with a small amount of Ti 2 AlMo phase reinforcement phase. The fine Al 2 O 3 particles dispersed on the TiAl matrix grain boundaries as a network structure and resulted in the improvement of room mechanical properties of the composites. With increasing of MoO 3 contents, the flexural strength and fracture toughness of (Ti,Mo)Al/Al 2 O 3 composites gradually increase, and with 1.0 at% MoO 3 , doped the products possess the maximum value of 702 MPa and 8.3 MPa m 1/2 for the flexural strength and fracture toughness, respectively.
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Research context
OpenAlex topics: Intermetallics and Advanced Alloy Properties · MXene and MAX Phase Materials · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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