Back to Search
Start Over
Material design and processing of a new class of titanium boride cermets with tough metallic phases and mechanical properties
- Source :
- Journal of Materials Research. 33:4296-4306
- Publication Year :
- 2018
- Publisher :
- Springer Science and Business Media LLC, 2018.
-
Abstract
- The design and the processing of a new class of titanium boride (TiB)-based bulk cermets containing a metallic phase (β-Ti phase) for toughening is presented. The general approach is rapid reaction and densification, using starting powders of Ti, TiB2, Fe, and Mo, by electric-field-activated sintering. The cermets consist of two-phase microstructures in which the boride phase formed as a networked structure of TiB whiskers that were created in situ upon the reaction between the powders. Hardness, flexural strength, and fracture toughness measurements of these materials revealed that they possess an interesting set of properties up to: hardness values of 1090 kg/mm2, flexural strength values of 953 MPa, and fracture toughness values of 18 MPa m1/2. A remarkable finding is that although the metallic phase fractured by microscopic cleavage, the cermets showed good fracture toughness values. The present study not only illustrates the process details and microstructure leading to these properties but also provides a broad powder metallurgical approach to design and synthesize cermets that may yield further improved properties.
- Subjects :
- 010302 applied physics
Yield (engineering)
Materials science
Mechanical Engineering
chemistry.chemical_element
02 engineering and technology
Cermet
021001 nanoscience & nanotechnology
Condensed Matter Physics
Microstructure
01 natural sciences
chemistry.chemical_compound
Fracture toughness
Flexural strength
chemistry
Mechanics of Materials
visual_art
Boride
0103 physical sciences
visual_art.visual_art_medium
General Materials Science
Ceramic
Composite material
0210 nano-technology
Titanium
Subjects
Details
- ISSN :
- 20445326 and 08842914
- Volume :
- 33
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Research
- Accession number :
- edsair.doi...........2db84162ecbd6ef9e5089ea29198a44c