The primary creep stage was investigated, at a temperature of 520C under a stress of 550MPa, in monocrystalline samples which contained 1at%Ta. It was found that edge super-dislocations in the [¯123] orientation dissociated on the octahedral plane, while those in the [¯112] orientation, which was about 7° off [001], climb-dissociated during 7h of creep. It was concluded that such climb-dissociation led to the end of primary creep, and occurred when the edge dislocations were halted by forest interactions.

On the Primary Creep of Ni3Al W.Zhu, D.Fort, I.P.Jones, R.E.Smallman: Philosophical Magazine Letters, 1998, 77[6], 307-13