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The effect of laser pulse tailored welding of inconel 718
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Womack, Michael G. Sharp, C. Michael McCay, T. Dwayne McCay, Mary Helen |
| Copyright Year | 1990 |
| Description | Pulse tailored laser welding has been applied to wrought, wrought grain grown, and cast Inconel 718 using a CO2 laser. Prior to welding, the material was characterized metallographically and the solid state transformation regions were identified using Differential Scanning Calorimetry and high temperature x-ray diffraction. Bead on plate welds (restrained and unrestrained) were then produced using a matrix of pulse duty cycles and pulsed average power. Subsequent characterization included heat affected zone width, penetration and underbead width, the presence of cracks, microfissures and porosity, fusion zone curvature, and precipitation and liquated region width. Pedigree welding on three selected processing conditions was shown by microstructural and dye penetrant analysis to produce no microfissures, a result which strongly indicates the viability of pulse tailored welding for microfissure free IN 718. |
| File Size | 2080836 |
| Page Count | 41 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19960011794 |
| Archival Resource Key | ark:/13960/t6d26tv5p |
| Language | English |
| Publisher Date | 1990-11-02 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Metallography Heat Measurement Laser Welding Pulsed Lasers X Ray Diffraction Wrought Alloys Cast Alloys Inconel Trademark Cracks Penetration Porosity Microstructure Carbon Dioxide Lasers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
