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

Research output: Contribution to journalArticle

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 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.

Original languageEnglish (US)
Pages (from-to)31-41
Number of pages11
JournalInternational Journal of Powder Metallurgy (Princeton, New Jersey)
Volume41
Issue number1
StatePublished - Jan 1 2005

ASJC Scopus subject areas

  • Metals and Alloys
  • Industrial and Manufacturing Engineering

Fingerprint Dive into the research topics of 'Fatigue-crack growth of Fe-0.85Mo-2Ni-0.6C steels with a heterogeneous microstructure'. Together they form a unique fingerprint.

  • Cite this

    Piotrowski, G. B., Deng, X., Chawla, N., Narasimhan, K. S., & Marucci, M. L. (2005). Fatigue-crack growth of Fe-0.85Mo-2Ni-0.6C steels with a heterogeneous microstructure. International Journal of Powder Metallurgy (Princeton, New Jersey), 41(1), 31-41.