Publication

Post-irradiation deformation in a Fe-9%Cr alloy

Robin Schäublin
2001
Journal Articles

Abstract

The deformed microstructures of both irradiated and unirradiated Fe-9%Cr (Fe-9Cr) uniaxial tensile specimens have been examined to identify controlling mechanisms. Deformation following irradiation is found to occur in poorly defined channels about 100 nm wide, causing formation of discrete steps at surfaces and, interestingly, designated by nonuniformly distributed highly elongated voids. Deformation is by motion of a(0)/2 dislocations, which interact with and decompose irradiation-induced a(0) loops. The structure formed after extensive deformation consists of highly complex cell walls and moderate densities of individual slip dislocations. It appears that the deformation mechanism is channeling. (C) 2001 Elsevier Science B.V. All rights reserved.

Official source

https://infoscience.epfl.ch/entities/publication/fe0ff9c4-ed4d-43bd-b670-e156f7bbdc79

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Robin Schäublin
2001
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/fe0ff9c4-ed4d-43bd-b670-e156f7bbdc79

About this result

Related concepts (32)

Plasticity (physics)

In physics and materials science, plasticity (also known as plastic deformation) is the ability of a solid material to undergo permanent deformation, a non-reversible change of shape in response to applied forces. For example, a solid piece of metal being bent or pounded into a new shape displays plasticity as permanent changes occur within the material itself. In engineering, the transition from elastic behavior to plastic behavior is known as yielding. Plastic deformation is observed in most materials, particularly metals, soils, rocks, concrete, and foams.

Deformation (physics)

In physics and continuum mechanics, deformation is the transformation of a body from a reference configuration to a current configuration. A configuration is a set containing the positions of all particles of the body. A deformation can occur because of external loads, intrinsic activity (e.g. muscle contraction), body forces (such as gravity or electromagnetic forces), or changes in temperature, moisture content, or chemical reactions, etc. Strain is related to deformation in terms of relative displacement of particles in the body that excludes rigid-body motions.

Deformation (engineering)

In engineering, deformation refers to the change in size or shape of an object. Displacements are the absolute change in position of a point on the object. Deflection is the relative change in external displacements on an object. Strain is the relative internal change in shape of an infinitesimally small cube of material and can be expressed as a non-dimensional change in length or angle of distortion of the cube. Strains are related to the forces acting on the cube, which are known as stress, by a stress-strain curve.

Related publications (2)

Post-irradiation deformation in a Fe-9%Cr alloy

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