Mechanical behavior of AISI 304SS determined by miniature test methods after neutron irradiation to 28dpa

Microstructural characterization and density change of 304 stainless steel reflector blocks after long-term irradiation in EBR-II

“…In addition to various non-destructive profilometry measurements, destructive examination was required for the current study to produce specimens for the assessment of spatial variations of the density changes and for TEM examination. Some preliminary results from the TEM study reported here have been used previously to rationalize changes in mechanical properties of 304 SS material after exposures to dpa and temperature gradients [8].…”

Microchemical and microstructural evolution of AISI 304 stainless steel irradiated in EBR-II at PWR-relevant dpa rates

“…There were also variations in temperature arising from the local sodium coolant temperature and the local gamma heating rate, the latter serving to elevate the temperature inside the block. These blocks have been used in a series of studies involving dimensional distortion, internal swelling profiles, microstructural evolution, density change, mechanical properties and ultrasonic velocity changes [26][27][28][29][30][31][32][33]. This study is the most recent in the series and used specimens taken from block #3 in the middle of the stack and from block #5, the highest in the stack.…”

Mechanics of the small punch test: a review and qualification of additive manufacturing materials

“…Other studies, however, while confirming the form of the relationship, found differing correlation constants for the UTS relationship based on the material, and the use of a single constant for all materials provided unreliable results [50,170]. Rabenberg et al, for example, found correlation factors for the shear yield and ultimate shear strength of 1.5 and 1.4, respectively, in addition to utilizing a 2.2% offset to determine the shear yield point, all of which differ from several studies presented earlier, though it falls within a large range that they found present in the literature [170]. Their correlation factors were established through a series of tests with samples of aluminum, stainless steel, and Inconel of varying treatment conditions, and validated with irradiated 304SS.…”

“…Subsequent support showed that this correlation also works well for a material not included in their primary study, electrodeposited Cu [165]. Other studies, however, while confirming the form of the relationship, found differing correlation constants for the UTS relationship based on the material, and the use of a single constant for all materials provided unreliable results [50,170]. Rabenberg et al, for example, found correlation factors for the shear yield and ultimate shear strength of 1.5 and 1.4, respectively, in addition to utilizing a 2.2% offset to determine the shear yield point, all of which differ from several studies presented earlier, though it falls within a large range that they found present in the literature [170].…”

“…The advantages of such a test make it an attractive option for material evaluation for numerous alloys in various industries, one such being the energy industry and its many different facets, from steam to nuclear. These methods are especially significant in nuclear power settings where many plants are reaching their end-oflife predicted ages and the long-term effects of neutron radiation are unknown [1,[3][4][5][6][7][8][9]. As the test employs very small samples, it is not only a good alternative where source material is scarce, but it is also useful in evaluating and tracking the evolution of material properties of a component that has been in service.…”