Stress distributions in multilayer laser deposited Waspaloy parts measured using neutron diffraction

Richard J. Moat, Andrew J. Pinkerton, Darren J. Hughes, Lin Li, Philip J. Withers, Michael Preuss

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

7 Citations (Scopus)

Abstract

During layered manufacturing of functional metallic parts by laser direct metal deposition (LDMD) residual stresses are generated by the transient thermal fields. Various methods to reduce or control the development of these stresses have been previously attempted. This paper reports a novel method using the pulse parameters of a diode laser deposition system as a tool for residual stress control. Stresses in LDMD manufactured Waspaloy blocks are calculated from strain measurements in three directions carried out at the neutron diffraction beam line SALSA at the European ILL facility, Grenoble, France. The results show tensile stresses close to the top of the structures of similar magnitude for all parameters and large compressive stresses normal to the deposition surface close to the base.

Original languageEnglish
Title of host publication26th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2007 - Congress Proceedings
PublisherLaser Institute of America
ISBN (Print)9780912035888
DOIs
Publication statusPublished - 2007
Externally publishedYes
EventInternational Congress on Applications of Lasers and Electro-Optics 2007 - Orlando, United States of America
Duration: 29 Oct 20071 Nov 2007
Conference number: 26th

Conference

ConferenceInternational Congress on Applications of Lasers and Electro-Optics 2007
Abbreviated titleICALEO 2007
CountryUnited States of America
CityOrlando
Period29/10/071/11/07

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