Helium Production by (n,α) Reactions in Stainless Steel

Anomalous shape effect of nanosized helium bubble on the elastic field in irradiated tungsten

“…Structural materials used in nuclear reactors are required to tolerate extreme operating conditions such as high temperature, high stress, intense radiation fluxes and chemical erosion, etc 1 . He atoms are introduced into metals mainly ascribed to deuterium–tritium fusion 2 and (n, α) reactions 3 and tend to aggregate into bubbles at lattice defect sites such as vacancy clusters and grain boundaries 4 . In fusion reactors, the bombardment of He atoms and high-energy neutrons may result in the damage and the formation of helium bubble 5 .…”

Effects of minor alloying additions on the strength and swelling behavior of an austenitic stainless steel

“…Gas generation is dependent on composition and neutron spectrum. Estimates have been made for gas production in stainless steels exposed to fast reactor neutron flux [27]. These values generally fall in the range 0.1 to 1 ppm/dpa.…”

“…Attempts have been made to fit experimental strengthening data using both E and G. Fleischer (105) has argued that while neither nor can singly fit the experimental data, reasonable agreement can be obtained using (27) where T is the flow stress and a is a constant. Saxl (104) where different mechanisms produce equal contributions to the total strain rate.…”

Effects of minor alloying additions on the strength and swelling behavior of an austenitic stainless steel

“…Attempts have been made to fit experimental strengthening data using both E and G. Fleischer (105) has argued that while neither nor can singly fit the experimental data, reasonable agreement can be obtained using (27) where T is the flow stress and a is a constant. Saxl (104) where f^ represents the fraction of obstacles of type i.…”