title: Novel mixed-mode phase transition involving a composition-dependent displacive component.
abstract: Solid-solid displacive, structural phase transformations typically undergo a discrete structural change from a parent to a product phase. Coupling electron microscopy, three-dimensional atom probe, and first-principles computations, we present the first direct evidence of a novel mechanism for a coupled diffusional-displacive transformation in titanium-molybdenum alloys wherein the displacive component in the product phase changes continuously with changing composition. These results have implications for other transformations and cannot be explained by conventional theories.
authors.affiliation: Department of Materials Science and Engineering, University of North Texas, Denton, Texas 76203, USA.
authors.forename: S
authors.initials: S
authors.lastname: Nag
authors.forename: A
authors.initials: A
authors.lastname: Devaraj
authors.forename: R
authors.initials: R
authors.lastname: Srinivasan
authors.forename: R E A
authors.initials: RE
authors.lastname: Williams
authors.forename: N
authors.initials: N
authors.lastname: Gupta
authors.forename: G B
authors.initials: GB
authors.lastname: Viswanathan
authors.forename: J S
authors.initials: JS
authors.lastname: Tiley
authors.forename: S
authors.initials: S
authors.lastname: Banerjee
authors.forename: S G
authors.initials: SG
authors.lastname: Srinivasan
authors.forename: H L
authors.initials: HL
authors.lastname: Fraser
authors.forename: R
authors.initials: R
authors.lastname: Banerjee