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Laser welding of a selective laser melted Ni-base superalloy: Microstructure and high temperature mechanical property
- Source :
- Materials Science and Engineering: A. 745:335-345
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Inconel 625 specimens manufactured by selective laser melting (SLM) were welded using a laser welding process. The tensile strength in the welding zone was higher than that of the base material at 815 °C. Fractures were observed in the base alloy, but not in the welding zone. The welding zone was mainly composed of columnar grains that exhibited greater resistance to tensile fractures than the as-received SLM alloy with equiaxed grains. The failure was characterized by brittle fractures in the base material, whereas the welding zone featured enhanced plastic deformation ability. The present work established laser welding as a highly efficient method for joining SLM Inconel 625 and for achieving outstanding high temperature performances.
- Subjects :
- Equiaxed crystals
0209 industrial biotechnology
Materials science
Mechanical Engineering
Laser beam welding
02 engineering and technology
Welding
021001 nanoscience & nanotechnology
Condensed Matter Physics
Microstructure
Inconel 625
law.invention
Superalloy
020901 industrial engineering & automation
Mechanics of Materials
law
Ultimate tensile strength
General Materials Science
Selective laser melting
Composite material
0210 nano-technology
Subjects
Details
- ISSN :
- 09215093
- Volume :
- 745
- Database :
- OpenAIRE
- Journal :
- Materials Science and Engineering: A
- Accession number :
- edsair.doi...........ddf4314bdaae12aedca40c73a515f4c1