Fatigue-crack growth of Fe-0.85Mo-2Ni-0.6C steels with a heterogeneous microstructure

George B. Piotrowski; Xin Deng; Nikhilesh Chawla; Kalathur S. Narasimhan; Michael L. Marucci

Fatigue-crack growth of Fe-0.85Mo-2Ni-0.6C steels with a heterogeneous microstructure

George B. Piotrowski
, Xin Deng
, Nikhilesh Chawla
, Kalathur S. Narasimhan
, Michael L. Marucci

Chemical Engineering

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

9 Scopus citations

Abstract

Fatigue crack growth of powder metallurgy (P/M) processed steels was investigated. It was found that heterogeneous microstructures play an important role in the fatigue crack behavior of P/M steels. In particular, porosity significantly influences fatigue crack growth. It was also found that an increase in porosity and R-ratio results in a decrease in DK_th values. An increase in the R-ratio and porosity increases the monotonic contribution during fatigue due to strain localization between pores at the crack tip.

Original language	English (US)
Pages (from-to)	31-41
Number of pages	11
Journal	International Journal of Powder Metallurgy (Princeton, New Jersey)
Volume	41
Issue number	1
State	Published - Jan 1 2005

ASJC Scopus subject areas

Metals and Alloys
Industrial and Manufacturing Engineering

Cite this

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abstract = "Fatigue crack growth of powder metallurgy (P/M) processed steels was investigated. It was found that heterogeneous microstructures play an important role in the fatigue crack behavior of P/M steels. In particular, porosity significantly influences fatigue crack growth. It was also found that an increase in porosity and R-ratio results in a decrease in DKth values. An increase in the R-ratio and porosity increases the monotonic contribution during fatigue due to strain localization between pores at the crack tip.",

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AU - Piotrowski, George B.

AU - Deng, Xin

AU - Chawla, Nikhilesh

AU - Narasimhan, Kalathur S.

AU - Marucci, Michael L.

PY - 2005/1/1

Y1 - 2005/1/1

N2 - Fatigue crack growth of powder metallurgy (P/M) processed steels was investigated. It was found that heterogeneous microstructures play an important role in the fatigue crack behavior of P/M steels. In particular, porosity significantly influences fatigue crack growth. It was also found that an increase in porosity and R-ratio results in a decrease in DKth values. An increase in the R-ratio and porosity increases the monotonic contribution during fatigue due to strain localization between pores at the crack tip.

AB - Fatigue crack growth of powder metallurgy (P/M) processed steels was investigated. It was found that heterogeneous microstructures play an important role in the fatigue crack behavior of P/M steels. In particular, porosity significantly influences fatigue crack growth. It was also found that an increase in porosity and R-ratio results in a decrease in DKth values. An increase in the R-ratio and porosity increases the monotonic contribution during fatigue due to strain localization between pores at the crack tip.

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M3 - Article

SN - 0888-7462

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JO - International Journal of Powder Metallurgy (Princeton, New Jersey)

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IS - 1

ER -

Fatigue-crack growth of Fe-0.85Mo-2Ni-0.6C steels with a heterogeneous microstructure

Abstract

ASJC Scopus subject areas

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