Cyclic softening and hardening behavior of a nickel-base superalloy

Journal Article · Sat Apr 15 04:00:00 EDT 1995 · Scripta Metallurgica et Materialia

DOI:https://doi.org/10.1016/0956-716X(94)00018-D· OSTI ID:55442

Choe, B H ^[1]; Lee, H C ^[2]

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1. Korea Inst. of Machinery and Metals, Changwon (Korea, Republic of)
2. Seoul National Univ. (Korea, Republic of). Dept. of Metallurgical Engineering

The interaction of dislocations with strengthening {gamma}{prime} and/or{gamma}{double_prime} precipitates is known to control the cyclic stress response of Ni-base superalloys. More information on the micromechanism of deformation is needed to fully understand the cyclic stress behavior of this type of alloys. In this study, the cyclic stress response of directionally solidified (DS) Mar-M247LC superalloy is investigated as a function of test temperature and {gamma}{prime} particle size. The role of dislocation behavior in the cyclic hardening and softening of this alloy is also discussed.

• OSTI ID: 55442
• Journal Information: Scripta Metallurgica et Materialia, Journal Name: Scripta Metallurgica et Materialia Journal Issue: 8 Vol. 32; ISSN 0956-716X; ISSN SCRMEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
BORON ADDITIONS
CARBON ADDITIONS
COBALT ALLOYS
DEFORMATION
DISLOCATIONS
FATIGUE
HAFNIUM ALLOYS
HARDENING
HEAT TREATMENTS
MOLYBDENUM ADDITIONS
NICKEL BASE ALLOYS
PRECIPITATION
SAMPLE PREPARATION
STRESSES
TANTALUM ALLOYS
TEMPERATURE DEPENDENCE
TITANIUM ADDITIONS
TUNGSTEN ALLOYS
ZIRCONIUM ADDITIONS