Microstructure and Mechanical Behavior of Pumice Particle Reinforced Magnesium Matrix Composites


Aydogmus T., Kösedağ E.

ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING, 2024 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1007/s13369-024-09736-6
  • Dergi Adı: ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Communication Abstracts, Metadex, Pollution Abstracts, zbMATH, Civil Engineering Abstracts
  • Anahtar Kelimeler: Magnesium, Mg2Si, In-situ composites, Pumice, Powder metallurgy
  • Van Yüzüncü Yıl Üniversitesi Adresli: Evet

Özet

In the present study, novel, lightweight and low-cost Mg/pumice composite materials have been developed for the first time. Mg matrix composites reinforced with 3–12 vol.% pumice powders were produced by hot pressing at 600 °C for 1 h under 50 MPa pressure. Microstructural analysis revealed that in-situ Mg2Si and MgO phases formed as a result of chemical reaction between pure Mg powders and SiO2 present in the pumice powders during processing. The room and elevated temperature (150 °C and 200 °C) yield and compressive strength of the composites increased with increasing reinforcement content. The increments up to 47.5% in yield strength and 53% in compressive strength at room temperature have been observed. Similarly, the utmost increments in yield and compressive strength at elevated temperatures were 72% and 50.5%, respectively. Ductility (especially at the room temperature) of the composites on the other hand was almost independent of the reinforcement content.