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

✍ Scribed by F.R. Stonesifer

• Publisher: Elsevier Science
• Year: 1978
• Tongue: English
• Weight: 882 KB
• Volume: 10
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(78)90014-0

✦ Synopsis

Crack growth-rate tests were performed in a medium-strength pressure vessel steel, AS33 B, which had been annealed to produce materials with widely varying priqr 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 K, The threshold and power law region of the d&dff vs AX plot seem relatively uneffected while the upper ~rni~~ AK is shifted extensively. The data is presented and compared with that already published.