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 language | English |
---|---|
Title of host publication | 26th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2007 - Congress Proceedings |
Publisher | Laser Institute of America |
ISBN (Print) | 9780912035888 |
DOIs | |
Publication status | Published - 2007 |
Externally published | Yes |
Event | International Congress on Applications of Lasers and Electro-Optics 2007 - Orlando, United States of America Duration: 29 Oct 2007 → 1 Nov 2007 Conference number: 26th |
Conference
Conference | International Congress on Applications of Lasers and Electro-Optics 2007 |
---|---|
Abbreviated title | ICALEO 2007 |
Country/Territory | United States of America |
City | Orlando |
Period | 29/10/07 → 1/11/07 |