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@ARTICLE{Li:909987,
author = {Li, Jiehua and Zhou, Xuyang and Su, Jing and Breitbach,
Benjamin and Lipinska-Chwalek, Marta and Wang, Huiyuan and
Dehm, Gerhard},
title = {{E}lucidating dynamic precipitation and yield strength of
rolled {M}g–{A}l–{C}a–{M}n alloy},
journal = {Materials science and engineering / A},
volume = {856},
issn = {0921-5093},
address = {Amsterdam},
publisher = {Elsevier},
reportid = {FZJ-2022-03573},
pages = {1-17/ 143898},
year = {2022},
abstract = {Although the precipitation and recrystallization of
Mg–Al–Ca–Mn based alloys have been well investigated
individually, there is still a lack of a detailed
investigation on the effect of the Al-rich clusters, Mn-rich
precipitates and/or Ca-rich Laves phases formed from dynamic
precipitation during rolling on the grain size and texture
as well as yield strength. Here, we have investigated the
effect of Mn (1 wt. $\%)$ on the dynamic precipitation and
yield strength of rolled Mg–3Al–1Ca alloy after rolling
up to 1 and 6 passes (at 350 °C and 300 °C). It was found
that an effective grain refinement can be obtained due to
the fact that the dynamic precipitation enhances dynamic
recrystallization by particle stimulated nucleation (PSN)
mechanism. No significant texture change was obtained
although the dynamic precipitation of Mn-rich particles due
to the addition of 1 wt. $\%$ Mn results in a change from an
RD-split texture to a strong basal texture. Three different
Mn-rich phases ((i) large primary Al8Mn5 phase, (ii) the
long plated-shaped Al8Mn5 phase, and (iii) nanoscale Al8Mn5
phase), C15 Laves phase (Al2Ca) and Al-rich clusters (G.P.
zone), were observed, while no plate-shaped Al–Ca
precipitate was observed on the basal plane of α-Mg matrix,
indicating a competition among the formation of Al-rich
clusters, plate-like Al–Ca precipitates, Ca-rich Laves
phase, and Mn–rich phase within α-Mg matrix. Dispersion
strengthening by the Ca-rich Laves phase, Mn–rich phase
and Al-rich clusters is proposed to be attributed to the
significant improvement of yield strength. This
investigation highlights the importance of elucidating the
effect of the dynamic precipitation on yield strength of
rolled Mg–3Al–1Ca–1Mn alloys and provides helpful
hints to further optimize the deformation and mechanical
properties of Mg–Al–Ca–Mn based alloys.},
cin = {ER-C-1 / ER-C-2},
ddc = {530},
cid = {I:(DE-Juel1)ER-C-1-20170209 / I:(DE-Juel1)ER-C-2-20170209},
pnm = {5353 - Understanding the Structural and Functional Behavior
of Solid State Systems (POF4-535) / 5351 - Platform for
Correlative, In Situ and Operando Characterization
(POF4-535) / ESTEEM3 - Enabling Science and Technology
through European Electron Microscopy (823717) / SFB-1394-A03
- Charakterisierung von Versetzungen und planaren Defekten
(A03) (437411567) / SFB 1394 B06 - Bruch komplexer
intermetallischer Phasen: Einfluss der Temperatur (B06)
(437420753)},
pid = {G:(DE-HGF)POF4-5353 / G:(DE-HGF)POF4-5351 /
G:(EU-Grant)823717 / G:(GEPRIS)437411567 /
G:(GEPRIS)437420753},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000862368700002},
doi = {10.1016/j.msea.2022.143898},
url = {https://juser.fz-juelich.de/record/909987},
}