Micro-scale mechanical characterization of Inconel cermet coatings deposited by laser cladding

Article English OPEN
Chao Chang ; Davide Verdi ; Miguel Angel Garrido ; Jesus Ruiz-Hervias (2016)
  • Publisher: Elsevier
  • Journal: Boletín de la Sociedad Española de Cerámica y Vidrio, volume 55, issue 4, pages 136-142 (issn: 0366-3175)
  • Related identifiers: doi: 10.1016/j.bsecv.2016.01.001
  • Subject: Depth sensing indentations | Industrial and Manufacturing Engineering | Inconel coating | Cermet | Elastic-plastic properties | TP785-869 | Mechanics of Materials | Ceramics and Composites | Clay industries. Ceramics. Glass

In this study, an Inconel 625-Cr3C2 cermet coating was deposited on a steel alloy by laser cladding. The elastic and plastic mechanical properties of the cermet matrix were studied by the depth sensing indentation (DSI) in the micro scale. These results were compared with those obtained from an Inconel 600 bulk specimen. The values of Young's modulus and hardness of cermet matrix were higher than those of an Inconel 600 bulk specimen. Meanwhile, the indentation stress–strain curve of the cermet matrix showed a strain hardening value which was more than twice the one obtained for the Inconel 600 bulk. Additionally, the mechanical properties of unmelted Cr3C2 ceramic particles, embedded in the cermet matrix were also evaluated by DSI using a spherical indenter.
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