Comparison of the strain-controlled low cycle fatigue behavior of stainless Type 304/308 weld and base material

Conference · Wed Jan 01 04:00:00 EST 1975

OSTI ID:4012653

Brinkman, C R; Koth, G E; Beeston, J M

Results are reported from strain-controlled fatigue tests conducted on uniform gage specimens taken from several different positions and orientations with double-U groove heavy section stainless Type 304/308 weldments. Room temperature and 593$sup 0$C test results are reported from strain-controlled fatigue, cyclic stress-strain, and elastic anisotropy measurement tests. The fatigue resistance of the weldment material was found to be inferior to that of base material at room temperature; however, the degree to which it was inferior was specimen orientation dependent. At 593$sup 0$C specimens taken from a parallel orientation with respect to the weld seam exhibited a fatigue resistance that was nearly equivalent to that of the base material. Transverse and transverse fusion line material showed inferior resistance to base material at both room temperature and 593$sup 0$C, however, comparison was difficult due to strain concentrations that occurred in the transverse weldment material. Extensive variations in apparent elastic properties, i.e., Young's modulus and Poisson's ratio were found to occur in weldment material at both room temperature and 593$sup 0$C. (auth)

• Research Organization: Aerojet Nuclear Co., Idaho Falls, ID
• NSA Number: NSA-33-026763
• OSTI ID: 4012653
• Country of Publication: United States
• Language: English

Related Subjects

*STAINLESS STEEL-304-- FATIGUE
*STAINLESS STEEL-308-- FATIGUE
*WELDED JOINTS-- FATIGUE
360103* --Materials--Metals & Alloys--Mechanical Properties
ANISOTROPY
ELASTICITY
HIGH TEMPERATURE
MELTING
N50230* --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties
Structure & Phase Studies
N77500 --Reactors--Power Reactors
Breeding
ORIENTATION
POISSON RATIO
STRAINS
YOUNG MODULUS