The effects of hot isostatic pressing and heat treatments on increasing the deformation strength of additive manufactured AlSi10Mg


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Aydın K., Karaağaç İ., Kabakçı M. O.

CANADIAN METALLURGICAL QUARTERLY, ss.1-9, 2025 (SCI-Expanded)

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1080/00084433.2025.2522571
  • Dergi Adı: CANADIAN METALLURGICAL QUARTERLY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.1-9
  • Gazi Üniversitesi Adresli: Evet

Özet

This study investigated the effects of the Hot Isostatic Pressing (HIP) process and heat treatments on the deformation strength and microstructure of AlSi10Mg parts produced by the additive manufacturing method. The bending process tested the deformation strength of the additively manufactured parts at 15, 30, 45, 60, and 75 degrees. It was observed that Si particles, which increase brittleness, were dispersed in the dendritic structure of the Al matrix in the microstructure of the as-built parts. After the HIP process, there was an increase in the grain size of the Si particles that coalesced and agglomerated, but a decrease in the number of grains. This situation caused a significant rise in deformation strength in HIP samples, and these parts could be deformed without cracking or breaking at a maximum die angle of 75 degrees. However, after the stress-relieving process, the specimens could be deformed at a maximum die angle of 15 degrees. It was determined that the tensile strength value, 341 MPa in the as-built specimens, decreased to 110 MPa in the HIP specimens, and the hardness value decreased from 131 HV to 62 HV.

This study investigated the effects of the Hot Isostatic Pressing (HIP) process and heat treatments on the deformation strength and microstructure of AlSi10Mg parts produced by the additive manufacturing method. The bending process tested the deformation strength of the additively manufactured parts at 15, 30, 45, 60, and 75 degrees. It was observed that Si particles, which increase brittleness, were dispersed in the dendritic structure of the Al matrix in the microstructure of the as-built parts. After the HIP process, there was an increase in the grain size of the Si particles that coalesced and agglomerated, but a decrease in the number of grains. This situation caused a significant rise in deformation strength in HIP samples, and these parts could be deformed without cracking or breaking at a maximum die angle of 75 degrees. However, after the stress-relieving process, the specimens could be deformed at a maximum die angle of 15 degrees. It was determined that the tensile strength value, 341 MPa in the as-built specimens, decreased to 110 MPa in the HIP specimens, and the hardness value decreased from 131 HV to 62 HV.