Precipitation and Growth Kinetics in Mechanically Alloyed Ni–Al | Zendy

Qingxin Tang | Zendy; Shigeharu Ukai | Zendy; Akinobu Minami | Zendy; Shigenari Hayashi | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Precipitation and Growth Kinetics in Mechanically Alloyed Ni–Al

Author(s) -

Qingxin Tang,

Shigeharu Ukai,

Akinobu Minami,

Shigenari Hayashi

Publication year - 2011

Publication title -

advances in materials science and engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.356

H-Index - 42

eISSN - 1687-8442

pISSN - 1687-8434

DOI - 10.1155/2011/137387

Subject(s) - materials science , ostwald ripening , activation energy , superalloy , precipitation , kinetics , arrhenius plot , metallurgy , diffusion , intermetallic , dislocation , arrhenius equation , chemical engineering , alloy , thermodynamics , composite material , chemistry , nanotechnology , physics , quantum mechanics , meteorology , engineering

The precipitation and growth kinetics of γ′ precipitates, which are strengthening factors in Ni-base oxide dispersion strengthened (ODS) superalloys, were investigated. The cuboidal-type γ′ precipitates are formed in conventional arc-melted Ni–Al alloys, whereas spherical-type precipitates are formed in the mechanically alloyed (MAed) specimens. The morphology is controlled by a lattice misfit between the γ′ precipitates and the matrix at the aging temperature of 800°C. The growth kinetics of the γ′ precipitates can be followed by Ostwald ripening. The Arrhenius plot yielded a lower activation energy for the solute atom diffusion in MAed specimens, which is attributed to their high dislocation density and nanosized grains

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research