Fatigue crack growth behavior of hybrid and prealloyed sintered steels. Part II. Fatigue behavior

X. Deng; G. Piotrowski; Nikhilesh Chawla; K. S. Narasimhan

doi:10.1016/j.msea.2008.01.021

Fatigue crack growth behavior of hybrid and prealloyed sintered steels. Part II. Fatigue behavior

X. Deng, G. Piotrowski, Nikhilesh Chawla, K. S. Narasimhan

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33 Scopus citations

Abstract

Powder metallurgy (P/M) steels will encounter fatigue loading in service. A fundamental understanding of porosity and steel matrix microstructure on fatigue behavior is important. In this paper, the fatigue crack growth behavior of hybrid and prealloy Ni-Mo P/M steels was investigated. The density of P/M steels was varied from 7.0 to 7.6 g/cm³. The relationship between microstructure and fatigue crack growth was investigated in detail. The density, matrix microstructure, and the degree of pore clustering had a significant effect on the crack growth behavior. The crack closure and two parameters (static: K_max and cyclic: ΔK) were employed to describe and explain the fatigue behavior of the steels.

Original language	English (US)
Pages (from-to)	28-38
Number of pages	11
Journal	Materials Science and Engineering A
Volume	491
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2008.01.021
State	Published - Sep 15 2008

Keywords

Fatigue crack growth
Powder metallurgy
Steel

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2008.01.021

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abstract = "Powder metallurgy (P/M) steels will encounter fatigue loading in service. A fundamental understanding of porosity and steel matrix microstructure on fatigue behavior is important. In this paper, the fatigue crack growth behavior of hybrid and prealloy Ni-Mo P/M steels was investigated. The density of P/M steels was varied from 7.0 to 7.6 g/cm3. The relationship between microstructure and fatigue crack growth was investigated in detail. The density, matrix microstructure, and the degree of pore clustering had a significant effect on the crack growth behavior. The crack closure and two parameters (static: Kmax and cyclic: ΔK) were employed to describe and explain the fatigue behavior of the steels.",

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AU - Deng, X.

AU - Piotrowski, G.

AU - Chawla, Nikhilesh

AU - Narasimhan, K. S.

PY - 2008/9/15

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N2 - Powder metallurgy (P/M) steels will encounter fatigue loading in service. A fundamental understanding of porosity and steel matrix microstructure on fatigue behavior is important. In this paper, the fatigue crack growth behavior of hybrid and prealloy Ni-Mo P/M steels was investigated. The density of P/M steels was varied from 7.0 to 7.6 g/cm3. The relationship between microstructure and fatigue crack growth was investigated in detail. The density, matrix microstructure, and the degree of pore clustering had a significant effect on the crack growth behavior. The crack closure and two parameters (static: Kmax and cyclic: ΔK) were employed to describe and explain the fatigue behavior of the steels.

AB - Powder metallurgy (P/M) steels will encounter fatigue loading in service. A fundamental understanding of porosity and steel matrix microstructure on fatigue behavior is important. In this paper, the fatigue crack growth behavior of hybrid and prealloy Ni-Mo P/M steels was investigated. The density of P/M steels was varied from 7.0 to 7.6 g/cm3. The relationship between microstructure and fatigue crack growth was investigated in detail. The density, matrix microstructure, and the degree of pore clustering had a significant effect on the crack growth behavior. The crack closure and two parameters (static: Kmax and cyclic: ΔK) were employed to describe and explain the fatigue behavior of the steels.

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Fatigue crack growth behavior of hybrid and prealloyed sintered steels. Part II. Fatigue behavior

Abstract

Keywords

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