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Influence of alloying elements on Ni distribution in PM steels
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Physical Metallurgy.ORCID iD: 0000-0002-2377-2383
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Physical Metallurgy.ORCID iD: 0000-0003-1102-4342
2014 (English)In: Powder Metallurgy, ISSN 0032-5899, E-ISSN 1743-2901, Vol. 57, no 2, 111-118 p.Article in journal (Refereed) Published
Abstract [en]

Powder metallurgical (PM) steels with elemental Ni additions exhibit non-homogenous microstructures with soft Ni rich areas, lean in C, after conventional sintering. Though, the exact correlation between the distribution of Ni and mechanical properties is not well known and depends on the conditions, e.g. the load state, it is desirable to be able to control the distribution of Ni since it plays a major role in the properties of Ni PM components. By introducing other alloying elements, the microstructure homogeneity of Ni containing PM steels, can be influenced. Thus, the effect of common alloying elements on the homogeneity of sintered microstructures has been investigated in the present work. It is found that additions of either C or Mo have minor effect on Ni distribution in the Fe-Ni system. However, addition of both C and Mo to Fe-Ni improves the Ni distribution. In addition, a strong interaction between Ni and Cu is observed and it enhances the Ni homogeneity. Furthermore, the influence of Cu is more pronounced in presence of C.

Place, publisher, year, edition, pages
2014. Vol. 57, no 2, 111-118 p.
Keyword [en]
Sintering, Powder metallurgy, Steels, Alloying, Homogeneity
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-147752DOI: 10.1179/1743290113Y.0000000078ISI: 000337125000013Scopus ID: 2-s2.0-84899504436OAI: oai:DiVA.org:kth-147752DiVA: diva2:732426
Note

QC 20140704

Available from: 2014-07-04 Created: 2014-07-03 Last updated: 2017-12-05Bibliographically approved

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Nabeel, Muhammad

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