NDLI: Processing and properties of mechanically alloyed Ni(Fe)Al-Al$_{2}$O$

Content Provider	Springer Nature Link
Author	Ur, Soon Chul Choo, Hahn Lee, Dong Bok Nash, Philip
Copyright Year	2000
Abstract	Ni(Fe)Al powders containing a homogeneous distribution of in-situ formed A1N and A1$_{2}$O$_{3}$ dispersoids were produced by a mechanical alloying process in a controlled atmosphere using a high energy attrition mill. The powders were successfully consolidated by either the hot pressing or hot extrusion process. The phase information investigated by TEM, XRD and a modified TGA analysis reveals that Fe can be soluble up to 19.2% to the NiAl phase(β) at room temperature after the MA process. Subsequent thermomechanical treatment under specific conditions was tried so as to induce a secondary recrystallization to improve the high temperature properties. However, no clear evidence of abrupt grain coarsening was obtained, presumably due to the restricted condition for the boundary break-away mechanism in this material. The mechanical properties in terms of strength at room temperature as well as at high temperatures were shown to have improved through the addition of AlN, and room temperature ductility was also shown to have improved by the precipitation of the second phase of α in this material.
Starting Page	435
Ending Page	440
Page Count	6
File Format	PDF
ISSN	15989623
Journal	Metals and Materials
Volume Number	6
Issue Number	5
Language	English
Publisher	The Korean Institute of Metals and Materials
Publisher Date	2000-01-01
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	mechanical alloying nickel aluminides dispersion strengthening in-situ A1N and A1$_{2}$O$_{3}$ Metallic Materials Operating Procedures, Materials Treatment Magnetism, Magnetic Materials Engineering Thermodynamics, Heat and Mass Transfer Characterization and Evaluation of Materials Continuum Mechanics and Mechanics of Materials
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Mechanics of Materials Metals and Alloys Condensed Matter Physics

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