Irradiation response of delta ferrite in as-cast and thermally aged cast stainless steel

Abstract

2016-11-02T18:49:00

The two-step nucleation of G-phase in ferrite

“…Their results are consistent with the present study; however, inconsistent in that their NieSieMn clusters contained fewer Mn atoms than Si atoms [27,28]. APT analysis by Li et al on thermally-aged and irradiated CF3 cast duplex stainless steels also detected low-Mn NieSieMn clusters [29]. Their TEM diffraction analysis on a Z3CN20-09M steel subjected to thermal aging, the (400) G spot was detected in the diffraction pattern [30], indicating that the composition of their Gphase was not Ni 16 Si 3.5 (Fe,Cr) 3.5 Mn 6 .…”

The effect of Laves phase on heavy-ion radiation response of Nb-containing FeCrAl alloy for accident-tolerant fuel cladding

“…Therefore, the Mo segregation in precipitate might be dominated via radiation damage dose. In a complex phase system containing multiple elements, the radiation defects of undersized and oversized atoms are more convenient to diffuse via mixed-dumbbell and vacancy mechanisms [48] . Those of transition metals including self-interstitial atoms and light atoms prefer to form dumbbells structures that two atoms share a lattice site [ 49 , 50 ].…”

Effect of proton irradiation dose rate and implanted hydrogen ions on spinodal decomposition in thermally aged EQ308L stainless steel weld metal

“…Research indicates that α' phases are formed in both Fe-Cr alloys (> 9 at. % Cr) and ferrite of cast austenitic stainless steels following neutron irradiation at temperatures ranging from 300 to 500°C [4,5]. However, when subjected to heavy ion irradiation with a high dose rate (> 10 -4 dpa/s), the formation of α' phase proves to be particularly challenging in these materials [6].…”