English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Effect of pack-forging on microstructure and properties of Mg–Gd–Y–Zn–Zr alloy

MPS-Authors
/persons/resource/persons207044

Liu,  Chuanlai
Theory and Simulation, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Wei, X., Jin, L., Liu, C., Wang, F., Dong, S., & Dong, J. (2021). Effect of pack-forging on microstructure and properties of Mg–Gd–Y–Zn–Zr alloy. Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing, 802: 140674. doi:10.1016/j.msea.2020.140674.


Cite as: https://hdl.handle.net/21.11116/0000-0009-7189-D
Abstract
An ultrahigh strength Mg-10Gd-4Y-1.5Zn-0.5Zr alloy was prepared by the combined process of extrusion, pack-forging and aging treatment. The resultant alloy possesses a bimodal grain structure, a high number density of nanoprecipitates and long period stacking ordered (LPSO)/stacking faults (SFs). Numerous dispersive precipitates formed after the aging treatment due to the high number density of dislocations induced by pack-forging at low forming temperatures. The additional compression stress benefited from the pack-forging accelerates the dynamic dissolution of the LPSO phase and precipitation of SFs. Heterogeneous deformation induced (HDI) strengthening is achieved from the bimodal grain structure and different types of dynamic recrystallization (DRXed) grains, which significantly enhance the yield strength. Besides, grain-boundary strengthening and precipitation strengthening contribute to the high yield strength as well. © 2020