Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1501606 | Scripta Materialia | 2009 | 4 Pages |
Abstract
The compositional width of the γ/γ′ interface in a commercial nickel base superalloy has been determined using three-dimensional atom probe tomography. Initially, on formation during continuous cooling, the primary γ′ precipitates exhibit a sharp interface while the secondary γ′ precipitates exhibit a substantially diffuse interface. On subsequent isothermal aging, the interface width increases for the primary γ′ precipitates while it decreases for the secondary γ′ precipitates, reaching a near-equilibrium width for both types of interfaces after prolonged aging.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
J.Y. Hwang, S. Nag, A.R.P. Singh, R. Srinivasan, J. Tiley, H.L. Fraser, R. Banerjee,