High temperature crack growth behavior in a precipitate-hardened nickel base superalloy under constant K [sub I] conditions

Journal Article · Wed Sep 01 00:00:00 EDT 1993 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(93)90398-C· OSTI ID:6471200

Korusiewicz, L; Ding, J; Kumosa, M ^[1]

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1. Oregon Graduate inst. of Science and Tech., Beaverton, OR (United States). Dept. of Materials Science and Engineering

Nickel base superalloys are typically used in high temperature components of gas turbines. A new precipitate (ppt)-hardened cast superalloy has been developed to satisfy the needs for structural component applications in advanced aircraft engines. These applications require an adequate understanding of crack extension mechanisms due to creep deformation and damage in the crack tip region in response to sustained or slowly varying loads. In this study, high temperature crack growth behavior in the nickel base superalloy under constant K[sub I] (Mode I) condition was investigated. The experiments were performed at 650C in air.

• OSTI ID: 6471200
• Journal Information: Scripta Metallurgica et Materialia; (United States), Vol. 29:5; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
NICKEL BASE ALLOYS
CRACK PROPAGATION
CREEP
EXPERIMENTAL DATA
GAS TURBINE ENGINES
HEAT RESISTING ALLOYS
PRECIPITATION HARDENING
TEMPERATURE RANGE 0400-1000 K
ALLOYS
DATA
ENGINES
HARDENING
HEAT ENGINES
HEAT RESISTANT MATERIALS
INFORMATION
INTERNAL COMBUSTION ENGINES
MATERIALS
MECHANICAL PROPERTIES
NICKEL ALLOYS
NUMERICAL DATA
TEMPERATURE RANGE
360103* - Metals & Alloys- Mechanical Properties