Aging phenomena before the precipitation of the bulky laves phase in Fe-10%Cr ferritic alloys

Creep stress Effect on the Precipitation Behavior of Laves Phase in Fe-10%Cr-6%W Alloys.

“…Miyahara et al have already recognized a similar hardness change in the Fe-10%Cr-Mo alloys and shown that this phenomenon is related to the characteristics of the Laves phase precipitation behavior. [7][8][9] That is, they have clarified that the small hardness peak is caused by the very fine disklike precipitates formed on the {100} planes of the matrix before the bulky Laves phase formation and that the large hardness increase after the small hardness peak is due to the large volume of the bulky Laves phase precipitates. Graduate School, Nagoya University, Nagoya 464-8603 Japan.…”

Microstructural characterization of the HAZ in AISI 444 ferritic stainless steel welds

“…Several other researchers have presented results for Laves phase precipitation in ferritic and duplex steels [15][16][17][18][19][20][21][22]. Sakasegawa et al [15], on studying the effect of precipitation morphology on ferritic/martensitic stainless steel toughness, verified that in materials aged at 650 °C, the M 6 C disappeared and the Laves phase appeared.…”

Study on microstructure characterization of fracture frontier of post welds heat treatment and type IV cracking of P92 steel welded joint

“…The evolution of Laves phase strongly affects the microstructure and creep behaviour of the P91 steel [24]. In P91 steel, Laves phase evolution is considered as harmful because the nucleation and growth of Laves phase result in diffusion of Mo from thematrix to Laves phase and leads to weakened solution strengthening [30]. In PWNT 2 crept sample, the clustering nature of the Laves phase results in lath widening due to areduction in preventing theeffect of Laves phase to lath boundaries migration.…”