Study of Coarsening in γ′ Precipitates by Diffusion Couples Article

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Overview

abstract

• The coarsening kinetics of γ’ precipitates and Vickers hardness evolution are studied along a concentration gradient generated in a Ni-13.75Ti (at.%25)/pure Ni diffusion couple at 1123, 1023, and 923 K. The formed concentration gradient allowed studying the aging process in Ni-rich Ni–Ti alloys with Ti content from 10.36 to 13.33 Ti (at.%25). It was possible to determine experimentally the solvus line and precipitation boundary of the γ’ phase at 1123 K by using the information obtained in such gradient. In addition to this, a comparison between the experimental coarsening kinetics and the LSW or TIDC theoretical models was carried out during the γ’ precipitates coarsening. © 2015, Springer Science%2bBusiness Media New York and ASM International.

authors

• Cruz Rivera José de Jesús
• Dorantes H.J.
• Estrada-Guel I.
• Garay-Reyes C.G.
• Hernández Rivera José Luis
• Hernández-Martínez S.E.
• Martínez-Sánchez R.

publication date

• 2015-01-01

published in

• Metallography, Microstructure, and Analysis  Journal

Research

keywords

• Coarsening; Diffusion couple; Nickel-based alloys; Precipitation hardening; Vickers hardness; γ’ Precipitates Age hardening; Coarsening; Diffusion; Nickel; Precipitation (chemical); Vickers hardness; Aging process; Coarsening kinetics; Concentration gradients; Diffusion couple; Ni diffusion; Nickel based alloy; Ti alloys; Ti content; Titanium alloys

Identity

Digital Object Identifier (DOI)

• 10.1007/s13632-015-0231-3

Additional Document Info

start page

• 467

end page

• 474

volume

• 4

issue

• 6