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Fatigue crack initiation and microcrack growth in 4140 steel

โœ Scribed by Kim, Y. H. ;Mura, T. ;Fine, M. E.


Book ID
112818022
Publisher
The Minerals, Metals & Materials Society
Year
1978
Tongue
English
Weight
927 KB
Volume
9
Category
Article
ISSN
1543-1916

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โœ J. Lankford ๐Ÿ“‚ Article ๐Ÿ“… 1977 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 661 KB

The micromechanics of crack initiation and early growth in 4340 steel is studied using the SEM, and it is found that growth is discontinuous and transgranular, with the distance between growth steps corresponding to the prior austenite grain size spread. The lowest observed growth rate is approximat