SEDL / STP / STP700-EB / STP36968S

Evaluation of C* for the Characterization of Creep-Crack-Growth Behavior in 304 Stainless Steel

Saxena, A
reader, Banaras Hindu University, Varanasi,

Pages: 21    Published: Jan 1980

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Abstract

An experimental program to characterize the creep-crack-growth behavior of 304 stainless steel at several temperatures was conducted. Crack growth rates, da/dt, obtained from center crack tension and compact type specimens were correlated by the energy rate line integral, C*. Experimental data indicate that minor differences in chemistry and microstructure do not significantly influence da/dt versus C* relationship. Also, in the range of 538 to 705°C (1000 to 1300°F), the da/dt versus C* relationship is not significantly affected by temperature. Simple analytical methods of estimating C* are also evaluated.