Details

Autor(en) / Beteiligte

• Osgerby, S.
• Gibbons, T.B.

Titel

Creep cavitation in a cast NiCr-base alloy

Ist Teil von

• Materials science and engineering, 1983-06, Vol.59 (2), p.L11-L14

Ort / Verlag

Lausanne: Elsevier B.V

Erscheinungsjahr

1983

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The fracture characteristics specimens of IN-939 tested in creep at 850°C for times up to 12 000 h have been examined using optical metallography. In addition to the normal composition, specimens doped with small amounts of bismuth and of iron were also tested. The results show that creep fracture occurred by cavitation at the grain boundaries similar to that frequently reported for wrought alloys. The presence of the trace elements resulted in the formation of larger numbers of smaller cavities compared with those observed in the base material.