Numerical analysis to determine critical height for multi layered laser cladding for die repair applications

Santanu Paul, Chaitanya Vundru, Ramesh Singh, Wenyi Yan

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

1 Citation (Scopus)

Abstract

The residual stress in the components repaired using laser cladding (LC) is of immense importance. A tensile residual stresses in the clad layer or clad-substrate interface region can lead to accelerated fatigue failure. To determine the optimal cladding conditions, it is imperative to identify a critical height of clad layer such that the entire layer is under compressive residual stress. A methodology to determine the critical clad height in a single layer deposition has been developed. However, the deposition of an additional layer can alter the residual stresses in the preceding layer. Consequently, the determination of sub-surface residual stress profile in multi-layered LC is of immense importance for successful restoration of critical components. The current work focuses on the development of a coupled metallo-thermomechanical finite element model in ABAQUS® for multi-layered laser cladding of CPM9V powder on H13 tool steel. The residual stress evolution along the cross-section has been characterized at different process conditions and the optimal conditions corresponding to the critical height has been identified wherein the deposited layers are under compressive residual stresses.

Original languageEnglish
Title of host publication9th Australasian Congress on Applied Mechanics, ACAM 2017
PublisherNational Committee on Applied Mechanics
Number of pages8
ISBN (Electronic)9781925627022
Publication statusPublished - 1 Jan 2017
EventAustralasian Congress on Applied Mechanics 2017 - University of New South Wales, Sydney, Australia
Duration: 27 Nov 201729 Nov 2017
Conference number: 9th
https://acam9.com.au/

Publication series

Name9th Australasian Congress on Applied Mechanics, ACAM 2017
Volume2017-November

Conference

ConferenceAustralasian Congress on Applied Mechanics 2017
Abbreviated titleACAM 2017
CountryAustralia
CitySydney
Period27/11/1729/11/17
Internet address

Keywords

  • Additive manufacturing
  • Critical height
  • Metallo-thermomechanical model
  • Multi-layered deposition
  • Residual stress

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