Experimental investigation of a Portevin-Le Chatelier band in Ni‒Co-based superalloys in relation to γʹ precipitates at 500 ℃

Yanke Liu^a, Yulong Cai^a, Chenggang Tian^b, Guoliang Zhang^b, Guoming Han^c, Shihua Fu^a^,^d, Chuanyong Cui^b^,^*(

), Qingchuan Zhang^a^,^*(

)

Fig. 4.. Sketches of the macroscopic fracture observed for the (a) 5% and (d) 30 % γ′ alloys and the fractographs of the (b, c) 5% and (e, f) 30 % γ′ alloys.