Precipitation and Growth Kinetics in Mechanically Alloyed Ni

Precipitation and Growth Kinetics in Mechanically Alloyed Ni–Al

Published:2011 Issue: Volume:2011 Page:1-7
ISSN:1687-8434
Container-title:Advances in Materials Science and Engineering
language:en
Short-container-title:Advances in Materials Science and Engineering

Author:

Tang QingXin¹,Ukai Shigeharu¹,Minami Akinobu¹,Hayashi Shigenari¹

Affiliation:

1. Materials Science and Engineering, Faculty of Engineering, Hokkaido University, N13, W-8, Kita-ku, Sapporo 060-8628, Japan

Abstract

The precipitation and growth kinetics ofγ′ precipitates, which are strengthening factors in Ni-base oxide dispersion strengthened (ODS) superalloys, were investigated. The cuboidal-typeγ′ 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 theγ′ precipitates and the matrix at the aging temperature of 800°C. The growth kinetics of theγ′ 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.

Publisher

Hindawi Limited

Subject

General Engineering,General Materials Science

Link

http://downloads.hindawi.com/journals/amse/2011/137387.pdf

Reference12 articles.

1. Anomalous coarsening behavior of small volume fractions of Ni3Al precipitates in binary NiAl alloys

2. Study of precipitation and growth of γ′ and dislocation structure in Inconel X-750

3. The Growth of γ' Precipitates in Nickel-base Superalloy

4. The kinetics of precipitation from supersaturated solid solutions

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