Metal Additive Manufacturing for early concept Validation

Visa enkel post
dc.contributor.authorNordström, Nils Emil Fredrik
dc.contributor.departmentChalmers tekniska högskola / Institutionen för industri- och materialvetenskapsv
dc.contributor.departmentChalmers University of Technology / Department of Industrial and Materials Scienceen
dc.contributor.examinerHryha , Eduard
dc.contributor.supervisorHryha, Eduard
dc.date.accessioned2025-01-16T08:27:30Z
dc.date.available2025-01-16T08:27:30Z
dc.date.issued2024
dc.date.submitted
dc.description.abstractThe manufacture of prototypes using metal additive manufacturing (AM) has been used for many years, however, there has been little research on how to heat treat AM aluminum parts to match the properties of parts manufactured using high pressure die casting (HPDC). Prototypes made using sand casting can only reach 70% of the strength of production HPDC parts, which is not ideal for early testing. As printed, the strength of AM aluminum alloys manufactured with Powder Bed Fusion – Laser Beam (PBF-LB) is much higher than HPDC aluminum alloy. Hence, AM parts can be heat treated to reduce their strength until it matches that of HPDC parts. This research investigated how the heat treatment of AM aluminum alloy AlSi10Mg affects its hardness, yield strength, ductility, and microstructure, as well as the mechanisms that cause the changes in properties. In addition, a replica of a production HPDC part was manufactured using AM to develop a prototype manufacturing process and to compare the results between them. The results showed that heat treating AM parts at 325ºC for 4 hours produced the closest yield strength to that of HPDC parts. However, the ductility was much greater for the AM parts due to differences in alloying elements and microstructure. For making an AM demonstrator, the process developed was to manufacture the part with PBF-LB along with some tensile bars, heat treat the part on the build plate, machine any critical surfaces, remove the support material, and treat the surface with glass blasting to remove any remaining particles/powder on the surface.
dc.identifier.coursecodeIMSX30
dc.identifier.urihttp://hdl.handle.net/20.500.12380/309087
dc.language.isoeng
dc.setspec.uppsokTechnology
dc.subjectAdditive manufacturing
dc.subjectPowder Bed Fusion – Laser Beam (PBF-LB)
dc.subjectHigh pressure die casting
dc.subjectAluminum alloy AlSi10Mg
dc.subjectHeat treatment
dc.subjectMaterial characterization
dc.subjectHardness
dc.subjectTensile strength
dc.subjectMicrostructure
dc.titleMetal Additive Manufacturing for early concept Validation
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster's Thesisen
dc.type.uppsokH
local.programmeMaterials engineering (MPAEM), MSc
Ladda ner
Original bundle
Visar 1 - 1 av 1
Bild (thumbnail)
Namn:
Masters Thesis - Print v8.pdf
Storlek:
4.85 MB
Format:
Adobe Portable Document Format
Beskrivning:
Ladda ner
License bundle
Visar 1 - 1 av 1
Bild (thumbnail)
Namn:
license.txt
Storlek:
2.35 KB
Format:
Item-specific license agreed upon to submission
Beskrivning:
Ladda ner
Samling
Examensarbeten för masterexamen