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- Title
Residual stresses in Cu matrix composite surface deposits after laser melt injection.
- Authors
Zhang, Xingxing; Kornmeier, Joana R.; Hofmann, Michael; Langebeck, Anika; Alameddin, Shadi; Alessio, Renan Pereira; Fritzen, Felix; Bunn, Jeffrey R.; Cabeza, Sandra
- Abstract
Tungsten carbide particles reinforced metal matrix composite (MMC) coatings can significantly improve surface wear resistance owing to their increased surface hardness. However, the presence of macro‐ and micro‐residual stresses in MMC coatings can have detrimental effects, such as reducing service life. In this study, neutron diffraction was used to determine the residual stresses in spherical fused tungsten carbide (sFTC) reinforced Cu matrix composite surface deposits after laser melt injection. We also developed a thermo‐mechanical coupled finite element model to predict residual stresses. Our findings reveal that sFTC/Cu composite deposits produced with a preheating temperature of 400°C have low residual stresses, with a maximum tensile residual stress of 98 MPa in the Cu matrix on the top surface. In contrast, the sFTC/bronze (CuAl10Ni5Fe4) composite deposit exhibits very high residual stresses, with a maximum tensile residual stress in the Cu matrix on the top surface reaching 651 MPa. These results provide a better understanding of the magnitudes and distributions of residual stresses in sFTC‐reinforced Cu matrix composite surface deposits manufactured via laser melt injection.
- Subjects
RESIDUAL stresses; COPPER; METALLIC composites; FINITE element method; MATRIX-assisted laser desorption-ionization; TUNGSTEN carbide; LASER peening; NEUTRON diffraction
- Publication
Strain, 2023, Vol 59, Issue 6, p1
- ISSN
0039-2103
- Publication type
Article
- DOI
10.1111/str.12457