Research on laser cladding repair and engineering аpplication of high-strength precipitation-hardening steel XM-25
Date Issued
2025
Author(s)
Tiancheng An
Berdnikova Olena
Haitao Wu
Abstract
XM-25, a high-strength martensitic precipitation-hardening stainless steel used in steam turbine blades, suffers from water erosion. This study restores large XM-25 blades using DED laser cladding. Results show enhanced tensile strength (>1200 MPa), yield strength (>1050 MPa), microhardness (>415 HBW), reduced residual stress, and 95% higher fatigue limit. The cladding layer demonstrates effective precipitation strengthening with uniformly dispersed strengthening phase particles, confirming restoration effectiveness.
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