Impurity element effects on the toughness of 9Cr-1Mo steel

Liquid metal embrittlement of silicon enriched steel for nuclear applications

“…This effect is caused by the addition of silicon. According to Harrelson et al [20] addition of silicon does not adversely affect the DBTT of high Cr steels when the Si concentration remains below 0.4 wt%. When the silicon concentration is increased above 0.4 wt% however, the addition of Si has a detrimental effect on the impact properties of the steel.…”

Tertiary creep behaviour of 9Cr–1Mo ferritic steel

“…9Cr-1Mo steel is favoured structural material for high temperature steam generator (SG) applications in thermal and nuclear power generating industries [10][11][12]. The steel with close control on trace elements has also emerged as an important candidate material for wrapper applications in future sodium cooled fast reactors (SFRs) due to high resistance to irradiation creep and void swelling compared to austenitic stainless steels [13,14]. 9Cr-1Mo steel offers a good combination of creep strength and ductility [11] and exhibits distinct low and high stress regimes characterised by separate values of stress exponent in the stress dependence of steady state creep rate and apparent activation energy in the low and high stress regimes [15].…”

Comparative tensile flow and work hardening behaviour of thin section and forged thick section 9Cr–1Mo ferritic steel in the framework of Voce equation and Kocks–Mecking approach

“…Use of 9Cr-1Mo steel as a single structural material in steam generators of SFRs enhances the reliability of the components including critical tube to tubeplate welds. The steel has also emerged as an important candidate material for wrapper applications in future SFRs due to high irradiation creep and void swelling resistance compared to austenitic steels [19,20].…”