Mechanical properties of case-hardened low Cr sintered steel

Akio Kobayashi; Toshio Maetani; Kuniaki Ogura; Naomichi Nakamura; Shigeru Unami; Yukiko Ozaki

doi:10.2497/jjspm.63.573

Mechanical properties of case-hardened low Cr sintered steel

Akio Kobayashi, Toshio Maetani, Kuniaki Ogura, Naomichi Nakamura, Shigeru Unami, Yukiko Ozaki

Research output: Contribution to journal › Article › peer-review

Abstract

A newly developed Ni-free pre-alloyed steel powder, Fe-0.5 %Cr-0.2 %Mn-0.2 %Mo (JIP® 5CRA) shows a rotating bending fatigue limit of 510 MPa after compacting, sintering and case-hardening process. This is approximately 40 % higher than that of a case-hardened sintered steel based on a conventional diffusion bonded steel powder, Fe-4 %Ni-1.5 %Cu-0.5 %Mo (4Ni). This is attributed to the higher compressive residual stress of the 5CRA based material. In spite of the higher fatigue limit, its tensile strength is lower than that of the 4Ni based material. The difference in the microstructural transformation behavior is a possible cause of this reverse phenomenon.

Original language	English
Pages (from-to)	573-578
Number of pages	6
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	63
Issue number	7
DOIs	https://doi.org/10.2497/jjspm.63.573
Publication status	Published - Jan 1 2016
Externally published	Yes

All Science Journal Classification (ASJC) codes

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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10.2497/jjspm.63.573

Cite this

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abstract = "A newly developed Ni-free pre-alloyed steel powder, Fe-0.5 %Cr-0.2 %Mn-0.2 %Mo (JIP{\textregistered} 5CRA) shows a rotating bending fatigue limit of 510 MPa after compacting, sintering and case-hardening process. This is approximately 40 % higher than that of a case-hardened sintered steel based on a conventional diffusion bonded steel powder, Fe-4 %Ni-1.5 %Cu-0.5 %Mo (4Ni). This is attributed to the higher compressive residual stress of the 5CRA based material. In spite of the higher fatigue limit, its tensile strength is lower than that of the 4Ni based material. The difference in the microstructural transformation behavior is a possible cause of this reverse phenomenon.",

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T1 - Mechanical properties of case-hardened low Cr sintered steel

AU - Kobayashi, Akio

AU - Maetani, Toshio

AU - Ogura, Kuniaki

AU - Nakamura, Naomichi

AU - Unami, Shigeru

AU - Ozaki, Yukiko

PY - 2016/1/1

Y1 - 2016/1/1

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AB - A newly developed Ni-free pre-alloyed steel powder, Fe-0.5 %Cr-0.2 %Mn-0.2 %Mo (JIP® 5CRA) shows a rotating bending fatigue limit of 510 MPa after compacting, sintering and case-hardening process. This is approximately 40 % higher than that of a case-hardened sintered steel based on a conventional diffusion bonded steel powder, Fe-4 %Ni-1.5 %Cu-0.5 %Mo (4Ni). This is attributed to the higher compressive residual stress of the 5CRA based material. In spite of the higher fatigue limit, its tensile strength is lower than that of the 4Ni based material. The difference in the microstructural transformation behavior is a possible cause of this reverse phenomenon.

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Mechanical properties of case-hardened low Cr sintered steel

Abstract

All Science Journal Classification (ASJC) codes

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