NSUF 16-696: Neutron Irradiation Effects on Tensile Properties and Deformation Behavior of 14YWT

The objective of this research is to investigate the effects of neutron irradiation on the advanced ODS 14YWT ferritic alloy to determine the tensile properties (strength and ductility) of two heats (SM6 and PM2) after irradiation to ~14.7 dpa at a temperature between ~350-420ºC and to investigate the microstructure present in the deformed tensile specimens following the tensile tests to determine the stability of the nanoclusters and grain structure to radiation induced displacement damages and dislocation interactions after neutron irradiation. This will allow for correlating the microstructure of the deformed tensile specimens with the associated tensile properties to develop a better understanding of the radiation tolerance of 14YWT. The desired timeframe for conducting the tensile tests, specimen preparation and TEM analysis is five months depending on scheduling of instruments in LAMDA facility at ORNL. This study will provide novel PIE results on understanding the interaction of radiation damage and mobile dislocations with nanoclusters and grain boundaries in 14YWT by conducting detailed TEM analysis of specimens obtained from the deformed section of the tested tensile specimens following neutron irradiation.

Additional Info

Field	Value
Abstract	The objective of this research is to investigate the effects of neutron irradiation on the advanced ODS 14YWT ferritic alloy to determine the tensile properties (strength and ductility) of two heats (SM6 and PM2) after irradiation to ~14.7 dpa at a temperature between ~350-420ºC and to investigate the microstructure present in the deformed tensile specimens following the tensile tests to determine the stability of the nanoclusters and grain structure to radiation induced displacement damages and dislocation interactions after neutron irradiation. This will allow for correlating the microstructure of the deformed tensile specimens with the associated tensile properties to develop a better understanding of the radiation tolerance of 14YWT. The desired timeframe for conducting the tensile tests, specimen preparation and TEM analysis is five months depending on scheduling of instruments in LAMDA facility at ORNL. This study will provide novel PIE results on understanding the interaction of radiation damage and mobile dislocations with nanoclusters and grain boundaries in 14YWT by conducting detailed TEM analysis of specimens obtained from the deformed section of the tested tensile specimens following neutron irradiation.
Award Announced Date	2016-08-16T12:59:12.04
Awarded Institution	None
Facility	None
Facility Tech Lead	Kory Linton
Irradiation Facility	None
PI	David Hoelzer
PI Email	[email protected]
Project Type	RTE
RTE Number	696