Microstructure and mechanical properties of fine-grained TiB2/AZ31 composites prepared via powder metallurgy
Source abstract
Abstract
In this work, the fine-grained TiB2/AZ31 composites with different TiB2additions were successfully fabricated via powder metallurgy, which exhibited the simultaneous improvement of strength and ductility. The average grain size of these TiB2/AZ31 composites could reach below 2.5 μm, which also achieved the low porosity and high hardness. Tensile test results indicated that AZ31-5wt%TiB2composites exhibited the best comprehensive mechanical properties at room and elevated temperatures. The yield strength (YS), ultimate tensile strength (UTS), and elongation (EL) of AZ31-5wt%TiB2could reach 219 MPa, 312 MPa, and 15.5% at room temperature, while the YS, UTS, and EL at 300 °C increased by 18.0%, 19.5%, and 156.4% compared with AZ31. The grain refinement played a dominant role in simultaneous improvement of strength and ductility. Besides that, the fracture mechanism of the AZ31-5wt%TiB2composites at both room temperature and elevated temperature showed ductile fracture.Graphical abstract
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Aluminum Alloys Composites Properties · Magnesium Alloys: Properties and Applications · Advanced ceramic materials synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (50)
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