Influence of precipitate morphology on high temperature fatigue crack growth of a single crystal nickel base superalloy
- CNR-ITM, Cinisello Balsamo (Italy)
The influence of [gamma][prime] morphology on the low cycle fatigue behavior of a model single crystal superalloy has been evaluated by Anton in the 650--980 C temperature range. This author found no difference in cycle life to failure between raft-like and cuboidal [gamma][prime]. Instead, in CMSX-2, a marked weakening effect of raft-like [gamma][prime] has been observed in creep. The authors found hardly any results on the influence of the raft-like [gamma][prime] microstructure on FCP rate in the open literature with the exception of the observations for CMSX-2, where the crack propagation orientation effect was not taken into account. The purpose of this work is to determine the influence of raft-like [gamma][prime] structure on the high temperature (750--950 C) fatigue crack growth behavior of CMSX-2 single crystal nickel base superalloy and to quantify the influence of the secondary orientation of single-edge-notched (SEN) specimens, loaded along the <001> direction.
- OSTI ID:
- 6007757
- Journal Information:
- Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 29:11; ISSN SCRMEX; ISSN 0956-716X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Kinetics of [gamma][prime] precipitation and its influence on fatigue crack growth behavior of a new single-crystal nickel-based superalloy (CMSX-4G) at room temperature
Directional {gamma}-{gamma}{prime} coarsening in a monocrystalline nickel-based superalloy during low-cycle thermomechanical fatigue
Related Subjects
360102* -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
CHROMIUM ALLOYS
COBALT ALLOYS
CRACK PROPAGATION
FATIGUE
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
MATERIALS
MECHANICAL PROPERTIES
MOLYBDENUM ADDITIONS
MOLYBDENUM ALLOYS
MORPHOLOGY
NICKEL ALLOYS
NICKEL BASE ALLOYS
TANTALUM ALLOYS
TITANIUM ADDITIONS
TITANIUM ALLOYS
TUNGSTEN ALLOYS