TY - JOUR
T1 - Fatigue-crack growth of Fe-0.85Mo-2Ni-0.6C steels with a heterogeneous microstructure
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
AN - SCOPUS:14644407398
SN - 0888-7462
VL - 41
SP - 31
EP - 41
JO - International Journal of Powder Metallurgy (Princeton, New Jersey)
JF - International Journal of Powder Metallurgy (Princeton, New Jersey)
IS - 1
ER -