Development of a constitutive model for creep and life prediction of advanced silicon nitride ceramics

Conference · Thu Dec 31 00:00:00 EST 1992

OSTI ID:10168891

Ding, J L ^[1]; Liu, K C; Brinkman, C R ^[2]

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1. Washington State Univ., Pullman, WA (US)
2. Oak Ridge National Lab., TN (US)

A constitutive model capable of describing deformation and predicting rupture life was developed for high temperature ceramic materials under general thermal-mechanical loading conditions. The model was developed based on the deformation and fracture behavior observed from a systematic experimental study on an advanced silicon nitride (Si{sub 3}N{sub 4}) ceramic material. Validity of the model was evaluated with reference to creep and creep rupture data obtained under constant and stepwise-varied loading conditions, including the effects of annealing on creep and creep rupture behavior.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 10168891
• Report Number(s): CONF-9211101-11; ON: DE93015894; TRN: 93:001955
• Resource Relation: Conference: Annual automotive development technology contractors` coordination meeting,Dearborn, MI (United States),2-5 Nov 1992; Other Information: PBD: [1992]
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CREEP
MATHEMATICAL MODELS
SILICON NITRIDES
FRACTURE MECHANICS
RUPTURES
CERAMICS
DEFORMATION
ANNEALING
SERVICE LIFE
THERMOMECHANICAL TREATMENTS
PREDICTION EQUATIONS
360203
MECHANICAL PROPERTIES