Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 846, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2022.143248
Keywords
Al-Zn-Mg-Cu alloy; Spray forming; Homogenization; Warm-rolling; Mechanical properties
Categories
Funding
- National Key Research and Development Program [2021YFB3700903]
- Natural Science Foundation of Jiangsu Province [BK20202010]
Ask authors/readers for more resources
The effect of homogenization and warm-rolling on the mechanical properties of an Al-based alloy fabricated by spray forming technology was studied. The results showed that the combination of these two processes significantly improved the mechanical properties of the alloy.
Effect of homogenization and warm-rolling on the mechanical properties of Al-11.38Zn-2.45Mg-1.1Cu-0.13Zr-0.1Fe (wt. %) alloy fabricated by spray forming technology was studied by scanning electron microscopy (SEM), electron back-scatter diffraction (EBSD), X-ray diffraction (XRD), energy dispersive spectroscopy (EDS) and transmission electron microscopy (TEM). The results indicate that the combination of homogenization and warm-rolling exhibit significantly potential for increasing the mechanical properties of the spray formed alloy. The introduction of two-step homogenization process can promote the precipitation of substantial amount of Al3Zr dispersoids, which provide the Orowan strengthening and inhibit recrystallization of the alloy. The warm-rolling at 200 degrees C produces a large number of dislocations, which not only provide strain hardening, but also promote the precipitation of eta' phase during aging treatment. Besides, the relatively low temperature rolling combined with Al3Zr dispersoids can avoid dynamic recrystallization and thus maintain fibrous microstructure of the alloy. An ultrahigh strength (YS = 868.9 +/- 1.6 MPa, UTS = 878.6 +/- 2.8 MPa, respectively) is achieved for the alloy due to synergistic effect of homogenization and warm-rolling.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available