Strain fatigue and tensile behavior of Inconel 718 from room temperature to 650$sup 0$C

Technical Report · Wed Aug 01 04:00:00 EDT 1973

DOI:https://doi.org/10.2172/4405742· OSTI ID:4405742

Brinkman, C. R.; Korth, G. E.

Results of tensile and fully reversed strain-controlled fatigue tests conducted on three heats of Inconel 718 that had been subjected to different solution annealing and aging treatments are presented. Tests were conducted at temperatures ranging from 22 to 650 deg C with fatigue tests defining behavior over the cyclic range of 10/sup 2/ to 10/sup 6/ cylces to failure. Average best- fit equations defining true stress-strain, strain-controlled fatigue, and cyclic stress-strain behavior are given for the two heat treatments characterized. Heat- to-heat variations in the elevated temperature tensile and fatigue behavior were found. Fatigue lifetime was seen to be dependent upon grain size, particularly at lower strain ranges. (auth)

• Research Organization: Aerojet Nuclear Co., Idaho Falls, Idaho (USA)
• DOE Contract Number: AT(10-1)-1375
• NSA Number: NSA-29-003042
• OSTI ID: 4405742
• Report Number(s): ANCR--1125
• Country of Publication: United States
• Language: English

Related Subjects

*INCONEL 718-- TENSILE PROPERTIES
AGING
ANNEALING
HIGH TEMPERATURE
LOW TEMPERATURE
MEDIUM TEMPERATURE
N50230* --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties
Structure & Phase Studies
STRAINS
STRESSES
VERY HIGH TEMPERATURE