Fine heterogeneous microstructure and mechanical properties of mim FE-NI alloy steels

Wan Sharuzi Wan Harun, Toshiko Osada, Yang Xu, Fujio Tsumori, Hideshi Miura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The microstructure and mechanical properties of high performance sintered Fe-Ni alloy steels by using metal injection molding (MIM) process were investigated. The mixed elemental materials, iron and water-atomized Ni powders, were utilized in this study. The microstructure of the compacts have been consistently structured heterogeneously by molding and sintering the mixed elemental powders as same as our previous reports. In this study, the microstructural aspects of the compact were changed by the characteristics of Ni powder, such as particle size, shape, and distribution, which play important roles in the deformation behavior. Eventually, tempered compacts added 6 mass% fine Ni powder showed ultrahigh strength of more than 2 GPa (290 ksi) and elongation of higher than 8 %. In order to understand how the microstructure results these high mechanical properties, we developed 2D finite element modeling based on the spatial distribution obtained experimentally. The simulated results of the models were compared to experimentally obtained behavior, and showed good agreements.

Original languageEnglish
Title of host publicationAdvances in Powder Metallurgy and Particulate Materials - 2013, Proceedings of the 2013 International Conference on Powder Metallurgy and Particulate Materials, PowderMet 2013
Pages420-430
Number of pages11
Publication statusPublished - Dec 18 2013
Event2013 International Conference on Powder Metallurgy and Particulate Materials, PowderMet 2013 - Chicago, IL, United States
Duration: Jun 24 2013Jun 27 2013

Publication series

NameAdvances in Powder Metallurgy and Particulate Materials - 2013, Proceedings of the 2013 International Conference on Powder Metallurgy and Particulate Materials, PowderMet 2013

Other

Other2013 International Conference on Powder Metallurgy and Particulate Materials, PowderMet 2013
CountryUnited States
CityChicago, IL
Period6/24/136/27/13

All Science Journal Classification (ASJC) codes

  • Materials Chemistry
  • Metals and Alloys

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  • Cite this

    Harun, W. S. W., Osada, T., Xu, Y., Tsumori, F., & Miura, H. (2013). Fine heterogeneous microstructure and mechanical properties of mim FE-NI alloy steels. In Advances in Powder Metallurgy and Particulate Materials - 2013, Proceedings of the 2013 International Conference on Powder Metallurgy and Particulate Materials, PowderMet 2013 (pp. 420-430). (Advances in Powder Metallurgy and Particulate Materials - 2013, Proceedings of the 2013 International Conference on Powder Metallurgy and Particulate Materials, PowderMet 2013).