Abstract

The effects of irradiation at temperatures between 93 and 454° C upon the room-temperature mechanical properties and electron microstructuros of AISI type 304 stainless steel have been determined. Irradiation at temperatures between 93 and 300° C produced a high density of defect clusters on the order of 100 Å in dia. which wore responsible for an increased yield stress. After irradiation at 371°C practically no defect clusters were observed and the yield stress was lower by a factor of two. At irradiation temperatures of 371° C and higher, precipitates formed within the grains. Deformation (10% by rolling) in a specimen containing the defect clusters was concentrated in very narrow slip bands, while in a specimen containing precipitate particles, the deformation was homogeneous.

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