The role of residual stress in the tension and compression response of WC–Ni

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2010, Vol.527 (15), p.3595-3601
• Main Authors: Krawitz, A.D., Drake, E.F., Clausen, B.
• Format: Article
• Language: English
• Subjects: Applied sciences; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Deformation, plasticity, and creep; Elasticity. Plasticity; Exact sciences and technology; Materials science; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metals. Metallurgy; Neutron diffraction and scattering; Neutron scattering; Neutron scattering techniques (including small-angle scattering); Physics; Residual stresses; Strain measurement; Structure of solids and liquids; crystallography; Treatment of materials and its effects on microstructure and properties
• ISSN: 0921-5093; 1873-4936
• DOI: 10.1016/j.msea.2010.02.046

The interaction of uniaxial applied stress with the thermal residual stress state in a WC–10 wt.% Ni cemented carbide composite was studied. A previously proposed model, based on results for uniaxial compressive loading, explains the observed asymmetric relaxation of the pre-existing thermal residual stress. This model predicts that the sense of the asymmetry would reverse in the case of tensile loading. The main purpose of the present work was to test this prediction. The reversal of signs was observed. The addition of tensile data has enabled the role of thermal residual stress on stress–strain response to be further elucidated. More complex behavior is observed with respect to the response of the variance in residual stresses, as measured by changes in diffraction peak breadths.