Details

Autor(en) / Beteiligte

• Izawa, Wataru
• Ukai, Shigeharu
• Oono, Naoko
• Hayashi, Shigenari
• Sakamura, Takashi
• Kohno, Yutaka
• Ohtsuka, Satoshi
• Kaito, Takeji

Titel

Charpy impact properties of 9CrODS ferritic steels

Ist Teil von

• Journal of nuclear materials, 2013-11, Vol.442 (1-3), p.S133-S137

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The toughness of 9CrODS steels was evaluated by using an instrumented Charpy impact test machine, focusing on various processes such as hot-forging and hot-rolling. The upper-shelf energy (USE) of the hot-forged specimens is superior; their full-size USE converted from the miniaturized specimen lies within the published data for ODS steels, whereas hot-rolling leads to poor toughness. The total absorbed energy was separated into the energies for crack initiation and propagation. The hot-forged 9CrODS steels provide similar crack initiation energy to ferritic/martensitic steels (FMSs); their low absorbed energy is attributed to a limited amount of crack propagation energy induced by plastic deformation.