Observation of serrated flow in APMT™ steel

Guria, Ankan; Charit, Indrajit

doi:10.1016/j.matlet.2015.07.072

Cited by 6 publications

(1 citation statement)

References 28 publications

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“…The alloy exhibited the highest degree of uniform plastic deformation of any alloy tested when it was tested at high temperature. Furthermore, it showed signs of dynamic strain aging, a result consistent with previous findings for different heats of Kanthal APMT [14,23,24]. Fracture surfaces in the specimens tested at room temperature showed trademark transgranular fracture with faceted textures and river markings ( Figure 2c).…”

Section: Unirradiated Tensile Propertiessupporting

confidence: 89%

Mechanical properties of neutron-irradiated model and commercial FeCrAl alloys

Field

Briggs

Sridharan

et al. 2017

Journal of Nuclear Materials

125

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The development and understanding of the mechanical properties of neutron-irradiated FeCrAl alloys is increasingly a critical need as these alloys continue to become more mature for nuclear reactor applications. This study focuses on the mechanical properties of model FeCrAl alloys and of a commercial FeCrAl alloy neutron-irradiated to up to 13.8 displacements per atom (dpa) at irradiation temperatures between 320 and 382°C. Tensile tests were completed at room temperature and at 320°C, and a subset of fractured tensile specimens was examined by scanning electron microscopy. Results showed typical radiation hardening and embrittlement indicative of high chromium ferritic alloys with strong chromium composition dependencies at lower doses. At and above 7.0 dpa, the mechanical properties saturated for both the commercial and model FeCrAl alloys, although brittle cleavage fracture was observed at the highest dose in the model FeCrAl alloy with the highest chromium content (18 wt %). The results suggest the composition and microstructure of FeCrAl alloys plays a critical role in the mechanical response of FeCrAl alloys irradiated near temperatures relevant to light water reactors.

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Section: Unirradiated Tensile Propertiessupporting

confidence: 89%