Effects of samarium content on microstructure and mechanical properties of Mg–0.5Zn–0.5Zr alloy

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Authors

  • Kai Guan
  • Fanzhi Meng
  • Pengfei Qin
  • Qiang Yang
  • Dongdong Zhang
  • Baishun Li
  • Wei Sun
  • Shuhui Lv
  • Yuanding Huang
  • Norbert Hort
  • Jian Meng

Effects of samarium (Sm) content (0, 2.0, 3.5, 5.0, 6.5 wt%) on microstructure and mechanical properties of Mg–0.5Zn–0.5 Zr alloy under as-cast and as-extruded states were thoroughly investigated. Results indicate that grains of the as-cast alloys are gradually refined as Sm content increases. The dominant intermetallic phase changes from Mg 3 Sm to Mg 41 Sm 5 till Sm content exceeds 5.0 wt%. The dynamically precipitated intermetallic phase during hot-extrusion in all Sm-containing alloys is Mg 3 Sm. The intermetallic particles induced by Sm addition could act as heterogeneous nucleation sites for dynamic recrystallization during hot extrusion. They promoted dynamic recrystallization via the particle stimulated nucleation mechanism, and resulted in weakening the basal texture in the as-extruded alloys. Sm addition can significantly enhance the strength of the as-extruded Mg–0.5Zn–0.5 Zr alloy at room temperature, with the optimal dosage of 3.5 wt%. The optimal yield strength (YS) and ultimate tensile strength (UTS) are 368 MPa and 383 MPa, which were enhanced by approximately 23.1% and 20.8% compared with the Sm-free alloy, respectively. Based on microstructural analysis, the dominant strengthening mechanisms are revealed to be grain boundary strengthening and dispersion strengthening.

OriginalspracheEnglisch
ZeitschriftJournal of Materials Science and Technology
Jahrgang35
Ausgabenummer7
Seiten (von - bis)1368-1377
Anzahl der Seiten10
ISSN1005-0302
DOIs
PublikationsstatusErschienen - 07.2019
Extern publiziertJa

DOI

Zuletzt angesehen

Publikationen

  1. Resort
  2. A Fictional Risk Narrative and Its Potential for Social Resonance: Reception of Barbara Kingsolver’s Flight Behavior in Reviews and Reading Groups
  3. Response to David B. Brooks
  4. Investigation and Modelling of the Influence of Cooling Rates on the Microstructure of AZ91 Alloys
  5. Siedlungsqualität, Wohnqualität
  6. Anton Schnack: Werke in zwei Bänden
  7. Kontextanalyse
  8. Contenant Contenu
  9. Der Zeitpfeil im Digitalen
  10. Collisionless damping in the spectra of active plasma resonance spectroscopic probes
  11. Action and action-regulation in entrepreneurship: Evaluating a student training for promoting entrepreneurship
  12. Itineraria Picta: Itineraria Scripta
  13. Habilitation von Dr. Mark Euler, Leuphana Universität
  14. Koordination verbessern
  15. Queer mobiles and mobile queers
  16. Aí é orixá!
  17. Online CSR communication by listed companies: a factor for enthusiasm or disappointment?
  18. Kommunikative Interferenzen
  19. Einführung
  20. Green technology innovation
  21. Behavior of volumetric core defects in friction extrusion of wire from Al-Cu alloy
  22. Karlsruher Postmoderne
  23. "alterNature" in Drew Hayden Taylor’s The Berlin Blues. Construction and De(con)struction of Contested Spaces
  24. Jean Piaget zur Einführung
  25. Vorstellungen über null und Null
  26. Linking Prefunding Venture Structure and Venture Capital Exit Performance
  27. Benzyl-penicillin (Penicillin G) transformation in aqueous solution at low temperature under controlled laboratory conditions
  28. Corporate social responsibility (CSR) decoupling and tax avoidance.
  29. Imagination and organization studies
  30. Quantification of sources of PCBs to the atmosphere in urban areas