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Effect of laser surface treatment on fatigue crack growth resistance in an FeMnAl austenitic steel
Date Issued
01-01-1993
Author(s)
Saxena, V. K.
Bharti, A.
Malakondaiah, G.
Radhakrishnan, V. M.
Abstract
Laser surface treatment (LST) results in significant improvement in fatigue crack growth resistance of an FeMnAl austenitic steel. The observed benificial effect is attributed to extensive crack closure as a result of compressive residual stresses originating from LST. The structure-sensitive nature of the crack growth operative in the base microstructure at low ΔK levels (up to ∼ 40 MPa m 1 2 with LST. © 1993.
Volume
15