The effect of temperature on the chemistry and morphology of the interphase in an SCS6/Ti-6Al-4V metal matrix composite

Journal Article · Sun Jul 01 00:00:00 EDT 1990 · Journal of Materials Research; (USA)

DOI:https://doi.org/10.1557/JMR.1990.1435· OSTI ID:6549380

Jones, C ^[1]; Kiely, C J ^[2]; Wang, S S ^[1]

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1. National Centre for Composite Materials Research, Talbot Laboratory, University of Illinois, Urbana, IL (USA)
2. Materials Research Laboratory, University of Illinois, Urbana, IL (USA)

The changes in the chemistry and morphology within the interphase region of an SCS6-Ti-6Al-4V metal matrix composite upon exposing the samples to varying heat treatments have been studied using Auger electron spectroscopy, TEM and convergent beam diffraction techniques. These changes, such as, the formation of small TiC particles at one interface, and the narrowing of a protective pyrocarbon layer at another, induce fracture to occur at different places within the interphase upon heating. The reasons for this are explained. Evidence for a change in phase of a Ti{sub {ital x}}Si{sub {ital y}}(C) layer to the more thermodynamically stable Ti{sub 5}Si{sub 3} is also given.

• DOE Contract Number: AC02-76ER01198
• OSTI ID: 6549380
• Journal Information: Journal of Materials Research; (USA), Journal Name: Journal of Materials Research; (USA) Vol. 5:7; ISSN JMREE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
AUGER ELECTRON SPECTROSCOPY
CERAMICS
COMPOSITE MATERIALS
ELECTRON MICROSCOPY
ELECTRON SPECTROSCOPY
ELEMENTS
FAILURES
FRACTURES
HEAT TREATMENTS
MATERIALS
METALS
MICROSCOPY
MORPHOLOGY
PHASE TRANSFORMATIONS
SPECTROSCOPY
TEMPERATURE DEPENDENCE
TRANSMISSION ELECTRON MICROSCOPY