Wear behaviour of laser cladded Ni-based WC composite coating for Inconel hot extrusion: practical challenges and effectiveness

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In forging, tooling costs make up a significant percentage of the total manufacturing cost. To combat tool failure, forging dies can be manufactured using or including layers of high wear-resistant alloys. The present work compares the manufacturing process challenges and wear response of traditional Nitriding to laser cladding using Ni-based WC on an H13 substrate for IN718 extrusion. The results have shown that machining of NiCrSiB + WC matrix material is problematic, both with regards to cutting tool wear and achievable surface finish. Assessment of pre- and post-extrusion Nitrided H13 and NiCrSiB + 30%WC laser clad dies shows more significant wear features in the case of the additively coated die. Crack formation and surface discontinuities attributed to the effects of material porosity and die heating are also discussed.
Original languageEnglish
Publication statusPublished - 8 Sep 2016
Event14th International Conference on Manufacturing Research - Loughborough University , Loughborough , United Kingdom
Duration: 6 Sep 20168 Sep 2016


Conference14th International Conference on Manufacturing Research
Abbreviated titleICMR 2016
Country/TerritoryUnited Kingdom


  • laser cladding
  • forging
  • extrusion
  • Ni-based WC
  • die wear

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