The effect of strain rate on the yield behavior of iron-base LRO alloys at elevated temperatures. [(Fe-Ni-V-Ti) alloy]

Technical Report · Thu Jan 01 00:00:00 EST 1987

OSTI ID:6141752

Lin, H T; Wilcox, R C; Chin, B A

The sensitivity of iron-base long-range ordered (LRO) alloys to strain rate at elevated temperatures was investigated. The tensile results indicate that the iron-base LRO alloys exhibit a positive temperature dependence of yield behavior, but are insensitive to variations in strain rate between 10/sup -5/ and 10/sup 0/ sec/sup -1/. These observations, along with SEM and TEM results, suggest that previous proposed diffusion-controlled mechanisms are not responsible for the increase in yield strength with increasing temperature. 12 refs., 5 figs.

• Research Organization: Auburn Univ., AL (USA)
• DOE Contract Number: FG05-86ER52139
• OSTI ID: 6141752
• Report Number(s): DOE/ER/52139-1; ON: DE87014893
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
LITHIUM ALLOYS
TENSILE PROPERTIES
NICKEL ALLOYS
VANADIUM ALLOYS
CRACKING
DIFFUSION
ELONGATION
GRAIN BOUNDARIES
IRON ALLOYS
SCANNING ELECTRON MICROSCOPY
STRAIN RATE
SURFACES
TEMPERATURE DEPENDENCE
TEMPERATURE EFFECTS
TITANIUM ADDITIONS
TRANSMISSION ELECTRON MICROSCOPY
YIELD STRENGTH
ALLOYS
CHEMICAL REACTIONS
CRYSTAL STRUCTURE
DECOMPOSITION
ELECTRON MICROSCOPY
MECHANICAL PROPERTIES
MICROSCOPY
MICROSTRUCTURE
PYROLYSIS
THERMOCHEMICAL PROCESSES
TITANIUM ALLOYS
360103* - Metals & Alloys- Mechanical Properties
360104 - Metals & Alloys- Physical Properties
420500 - Engineering- Materials Testing