Change in microstructure and toughness of ferritic-martensitic stainless steels during long-term aging

Investigations on the growth kinetics of Laves phase precipitates in 12% Cr creep-resistant steels: Experimental and DICTRA calculations

“…A reduction in Si content in tempered martensitic ferrite steel reduces precipitation of the Laves phase in ferrite grains [31]. DICTRA simulations did not show any change in precipitation of the Laves phase (see Fig.…”

Tensile testing of EP-823 and HT-9 after irradiation in STIP II

“…The most significant difference between EP-823 and HT-9 is its increased silicon content and the small tungsten and niobium additions. Previous work on silicon containing ferritic/martensitic steels showed aging at temperatures from 500 to 600°C led to a decrease in toughness with increasing silicon content caused by precipitation of Laves-phases containing Si and P [8,9]. Such precipitation has also been observed under irradiation at 400°C [10,11].…”

The effects of fast reactor irradiation conditions on the tensile properties of two ferritic/martensitic steels

“…This may be a result of the increased silicon content in the JFMS alloy. Aging studies performed on the JFMS alloy at temperatures from 500 to 600°C show that Si has a significant effect on toughness caused by precipitation of laves phases containing Si and P [29,30]. Such precipitation has also been observed after irradiation at 400°C [20,21].…”