Investigation of fine heterogeneous microstructure on the mechanical properties of MIM Fe-Ni alloy steels

Wan Sharuzi Wan Harun; Toshiko Osada; Hyungoo Kang; Fujio Tsumori; Hideshi Miura

doi:10.2497/jjspm.59.677

Investigation of fine heterogeneous microstructure on the mechanical properties of MIM Fe-Ni alloy steels

Wan Sharuzi Wan Harun, Toshiko Osada, Hyungoo Kang, Fujio Tsumori, Hideshi Miura

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5 Citations (Scopus)

Abstract

The influence of nickel particle sizes, nickel mass%, and sintering temperatures on the microstructure and mechanical properties of injection molded Fe-Ni compacts have been studied. The mixed elemental carbonyl iron and water-atomized nickel powders were utilized in this study. Tempered compact added 6mass% fine nickel powder which was sintered at 1250 °C for 1 hour showed superhigh strength of 2040 MPa with elongation of 8.1%, the best properties among reported data in MIM low alloy steel compacts. These excellent mechanical properties by fine heterogeneous microstructure of the compact are explained in terms of the complicated networks of nickel content variation throughout the steel matrix.

Original language	English
Pages (from-to)	677-684
Number of pages	8
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	59
Issue number	12
DOIs	https://doi.org/10.2497/jjspm.59.677
Publication status	Published - Dec 2012

All Science Journal Classification (ASJC) codes

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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abstract = "The influence of nickel particle sizes, nickel mass%, and sintering temperatures on the microstructure and mechanical properties of injection molded Fe-Ni compacts have been studied. The mixed elemental carbonyl iron and water-atomized nickel powders were utilized in this study. Tempered compact added 6mass% fine nickel powder which was sintered at 1250 °C for 1 hour showed superhigh strength of 2040 MPa with elongation of 8.1%, the best properties among reported data in MIM low alloy steel compacts. These excellent mechanical properties by fine heterogeneous microstructure of the compact are explained in terms of the complicated networks of nickel content variation throughout the steel matrix.",

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AU - Miura, Hideshi

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AB - The influence of nickel particle sizes, nickel mass%, and sintering temperatures on the microstructure and mechanical properties of injection molded Fe-Ni compacts have been studied. The mixed elemental carbonyl iron and water-atomized nickel powders were utilized in this study. Tempered compact added 6mass% fine nickel powder which was sintered at 1250 °C for 1 hour showed superhigh strength of 2040 MPa with elongation of 8.1%, the best properties among reported data in MIM low alloy steel compacts. These excellent mechanical properties by fine heterogeneous microstructure of the compact are explained in terms of the complicated networks of nickel content variation throughout the steel matrix.

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Investigation of fine heterogeneous microstructure on the mechanical properties of MIM Fe-Ni alloy steels

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