Mechanical properties and microstructure of an A1{sub 2}O{sub 3}-SiC-TiC composite.
Journal Article
·
· Mater. Sci. Eng. A
The mechanical properties and microstructure of a hard, electrodischarge-machinable composite, Al{sub 2}O{sub 3}-SiC-TiC, were studied. The material was fabricated by hot pressing 46.1 vol.% Al{sub 2}O{sub 3} powder, 30.9 vol.% SiC whiskers and 23.0 vol.% TiC powder. Significant reaction occurred between the Al{sub 2}O{sub 3} and SiC during processing. The resultant composite consisted of nearly unreacted TiC particles, Al{sub 2}O{sub 3}, plus smaller concentrations of SiC, mullite and possibly a mixture of Al-Si-O-C. The composite exhibited at room temperature an elastic modulus of 409.6{+-}0.5 GPa, microhardness values of 19-32 GPa, indentation fracture toughness (KIC) of 9.6{+-}0.6 MPa(m)0.5, compressive strength as high as 2.8 GPa and fracture strength in bending of {approx}680-825 MPa.
- Research Organization:
- Argonne National Laboratory (ANL)
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 938081
- Report Number(s):
- ANL/ET/JA-26770
- Journal Information:
- Mater. Sci. Eng. A, Journal Name: Mater. Sci. Eng. A Journal Issue: 1-2 ; Feb. 1998 Vol. 242; ISSN 0921-5093; ISSN MSAPE3
- Country of Publication:
- United States
- Language:
- ENGLISH
Similar Records
Creep of an A1{sub 2}O{sub 3}-SiC(whisker)-TiC(particle) composite.
Fracture and creep of an Al{sub 2}O{sub 3}-SiC(whisker)-TiC(particle) composite.
Improvements in mechanical properties in SiC by the addition of TiC particles
Journal Article
·
Mon Aug 31 00:00:00 EDT 1998
· Mater. Sci. Eng. A
·
OSTI ID:938183
Fracture and creep of an Al{sub 2}O{sub 3}-SiC(whisker)-TiC(particle) composite.
Conference
·
Tue Feb 24 23:00:00 EST 1998
·
OSTI ID:10659
Improvements in mechanical properties in SiC by the addition of TiC particles
Conference
·
Sat Dec 31 23:00:00 EST 1983
·
OSTI ID:6916339