The growth mechanisms of θ′ precipitate phase in an Al-Cu alloy during aging treatment
Lin Gao, Kai Li, Song Ni, Yong Du, Min Song*(
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Fig. 3.. Atomic-scale HAADF-STEM images showing (a) the common and (b) a different semicoherent interface between θ' precipitate and the Al matrix. The interfacial structure in (b) reflects the “zipperlike” mechanism during the growth of θ' precipitate. Interstitial Cu atoms on the coherent interface are marked by orange arrows.
