论文信息 - Effect of grain size and temperature on fatigue crack propagation in A533 B steel

Effect of grain size and temperature on fatigue crack propagation in A533 B steel

Abstract Crack growth-rate tests were performed in a medium-strength pressure vessel steel, A533 B, which had been annealed to produce materials with widely varying prior austenite grain sizes. Testing was at two temperatures, normal room temperature and liquid nitrogen temperature, both on the lower shelf of the material's Charpy energy curve. Results show that both grain size and temperature influence quasibrittle crack growth, mainly through their effect on KIc'. The threshold and power law region of the da/dN vs ΔK plot seem relatively uneffected while the upper limiting ΔK is shifted extensively. The data is presented and compared with that already published.

F. R. Stonesifer | F. Stonesifer

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