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Mechanical and structural characterization of uniaxially cold-pressed Fe2MO powders
KTH, Superseded Departments, Materials Science and Engineering.
2002 (English)In: Journal of Materials Research, ISSN 0884-2914, E-ISSN 2044-5326, Vol. 17, no 8, 1954-1959 p.Article in journal (Refereed) Published
Abstract [en]

In this work, Fe2Mo intermetallic powder, produced by H-2 gas reduction of Fe2MoO4 was characterized by techniques like x-ray diffraction (XRD) and transmission electron microscopy (TEM). The TEM studies confirmed the presence of nano- and microcrystalline grains of Fe2Mo. The above powders when compressed uniaxially showed a logarithmic relation with relative density, delta(r), of the compacts. The multiple compaction mechanisms were analyzed by Kawakita's and Balshin's models. Vickers hardness number, VHN, was found to increase linearly with delta(r) of the compacts. The hardness of Fe2Mo intermetallic when delta(r) = 1 was estimated as 343 VHN. Using Tabor's analysis, the yield strength of Fe2Mo was found to be about 1100 MPa. This value was further confirmed from the details of relative broadening (112) Bragg peak of Fe2Mo obtained from XRD analyses of Fe2Mo at different compaction pressures.

Place, publisher, year, edition, pages
2002. Vol. 17, no 8, 1954-1959 p.
Identifiers
URN: urn:nbn:se:kth:diva-21781ISI: 000177208800014OAI: oai:DiVA.org:kth-21781DiVA: diva2:340479
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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