Abstract
The evolution of γ′ morphology was investigated during cooling and isothermal aging in a newly developed Ni–Co based wrought superalloy. The results showed that unstable flowery γ′ precipitated at a cooling rate of 5°C min−1 and became stable during isothermal aging, and its shape was either spherical or cuboidal depending on the aging temperatures. The evolution mechanism of γ′ morphology was discussed in terms of the diffusion effects, the elastic strain energy and the γ′/γ interface energy.
Get full access to this article
View all access options for this article.
