Statistical analysis of cleavage fracture load of notched bar with granular bainitic microstructure

✍ Scribed by X.X. Xu; Y. Su; Q.G. Cai; H.L. Piao

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 486 KB
• Volume: 36
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(90)90111-s

✦ Synopsis

Based on a three-parameter Weibull statistical model of transgranular cleavage fracture in granular bainite in a weld heat-a&ted zone, some factors influencing cleavage fracture load of a notched bar under pure bending have been investigated. The cleavage fracture load decreases as strain-hardening exponent n increases. When the Weibull shape factor, m or the critical stress for the largest cracked M-A constituent to initiate cleavage, uL is raised, improvement in the cleavage fracture load results. With the combination of large m and high uL, the cleavage fracture load can be enhanced significantly.