Strength, Fracture, and Fatigue Behavior of Advanced High-Temperature Intermetallics Reinforced with Ductile Phases

W.O. SOBOYEJO; K.T. VENKATESWARA RAO; S.M.L. SASTRY; R.O. RITCHIE

doi:10.1007/BF02656628

Author(s)

W.O. SOBOYEJO
K.T. VENKATESWARA RAO
S.M.L. SASTRY
R.O. RITCHIE

Detail(s)

Original language	English
Pages (from-to)	585-600
Journal / Publication	Metallurgical Transactions A
Volume	24
Issue number	3
Publication status	Published - Mar 1993
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1007/BF02656628 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-51249162582&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(c37cfcbd-e092-407b-a731-aa8f3dbc85ec).html

Abstract

The results of recent studies on the fatigue and fracture behavior of extruded Ti-48A1 + 20 vol pct TiNb and hot-isostatically pressed ("hipped") MoSi₂ + 20 vol pct Nb are presented (compositions in atomic percent unless stated otherwise). The effects of ductile phase reinforcement of Ti-48A1 and MoSi₂ on the micromechanisms of fracture under monotonie and cyclic loading are elucidated. Micromechanics models are applied to the prediction of crack-tip shielding components, and the effects of temperature on tensile/compressive/flexure strengths are discussed. Ductile phase toughening under monotonie loading conditions is shown to be associated with lower fatigue crack growth resistance. The lower fatigue resistance is attributed to the absence of crack-tip shielding, higher crack opening displacements, and the effects of inelastic strains that are developed in ductile phase-reinforced composites under cyclic loading conditions. © 1993 The Minerals, Metals and Materials Society, and ASM International.

Citation Format(s)

[ RIS ] [ BibTeX ]

Strength, Fracture, and Fatigue Behavior of Advanced High-Temperature Intermetallics Reinforced with Ductile Phases. / SOBOYEJO, W.O.; VENKATESWARA RAO, K.T.; SASTRY, S.M.L. et al.
In: Metallurgical Transactions A, Vol. 24, No. 3, 03.1993, p. 585-600.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

SOBOYEJO, WO, VENKATESWARA RAO, KT, SASTRY, SML & RITCHIE, RO 1993, 'Strength, Fracture, and Fatigue Behavior of Advanced High-Temperature Intermetallics Reinforced with Ductile Phases', Metallurgical Transactions A, vol. 24, no. 3, pp. 585-600. https://doi.org/10.1007/BF02656628

SOBOYEJO, W. O., VENKATESWARA RAO, K. T., SASTRY, S. M. L., & RITCHIE, R. O. (1993). Strength, Fracture, and Fatigue Behavior of Advanced High-Temperature Intermetallics Reinforced with Ductile Phases. Metallurgical Transactions A, 24(3), 585-600. https://doi.org/10.1007/BF02656628

SOBOYEJO WO, VENKATESWARA RAO KT, SASTRY SML, RITCHIE RO. Strength, Fracture, and Fatigue Behavior of Advanced High-Temperature Intermetallics Reinforced with Ductile Phases. Metallurgical Transactions A. 1993 Mar;24(3):585-600. doi: 10.1007/BF02656628

SOBOYEJO, W.O. ; VENKATESWARA RAO, K.T. ; SASTRY, S.M.L. et al. / Strength, Fracture, and Fatigue Behavior of Advanced High-Temperature Intermetallics Reinforced with Ductile Phases. In: Metallurgical Transactions A. 1993 ; Vol. 24, No. 3. pp. 585-600.