Effect of Heat Treatment on the Microstructure and Corrosion Properties of Mg–15Dy–1.5Zn Alloy with LPSO Phase
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Effect of Heat Treatment on the Microstructure and Corrosion Properties of Mg–15Dy–1.5Zn Alloy with LPSO Phase. / Jiang, Genzhi; Huang, Yuanding; Gavras, Sarkis et al.
Magnesium Technology 2024. ed. / Aeriel Leonard; Steven Barela; Neale R. Neelameggham; Victoria M. Miller; Domonkos Tolnai. Cham : Springer Science and Business Media Deutschland GmbH, 2024. p. 7-13 (Minerals, Metals and Materials Series).Research output: Contributions to collected editions/works › Article in conference proceedings › Research › peer-review
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TY - CHAP
T1 - Effect of Heat Treatment on the Microstructure and Corrosion Properties of Mg–15Dy–1.5Zn Alloy with LPSO Phase
AU - Jiang, Genzhi
AU - Huang, Yuanding
AU - Gavras, Sarkis
AU - Shi, Hui
AU - Hort, Norbert
N1 - Publisher Copyright: © The Minerals, Metals & Materials Society 2024.
PY - 2024/1/1
Y1 - 2024/1/1
N2 - The influence of the amount and type of long-period stacking ordered (LPSO) phase on the corrosionCorrosion behavior of both the as-cast and heat-treated Mg–15Dy–1.5Zn alloys in 0.9% NaCl solution was investigated. It was found that the network structure 18R-LPSO phase is an effective barrier to further corrosion of the as-cast sample. After T4 treatment for 24 h, the dendrites disappeared and part of 18R-LPSO dissolved in the matrix, which weakened the corrosion protection. Meanwhile, such LPSO phase acts as a cathodic to accelerate the corrosionCorrosion of the matrix because of its potential difference from the magnesium matrix. After T4 treatment for a longer time, 18R-LPSO phase could transform into 14H-LPSO phase which has a different effect on corrosion. The galvanic corrosion also occurs between the 14H-LPSO phase and the matrix. Its uniform and dense distribution results in the formation of continuous corrosionCorrosion products on the surface, which is beneficial for corrosion resistance.
AB - The influence of the amount and type of long-period stacking ordered (LPSO) phase on the corrosionCorrosion behavior of both the as-cast and heat-treated Mg–15Dy–1.5Zn alloys in 0.9% NaCl solution was investigated. It was found that the network structure 18R-LPSO phase is an effective barrier to further corrosion of the as-cast sample. After T4 treatment for 24 h, the dendrites disappeared and part of 18R-LPSO dissolved in the matrix, which weakened the corrosion protection. Meanwhile, such LPSO phase acts as a cathodic to accelerate the corrosionCorrosion of the matrix because of its potential difference from the magnesium matrix. After T4 treatment for a longer time, 18R-LPSO phase could transform into 14H-LPSO phase which has a different effect on corrosion. The galvanic corrosion also occurs between the 14H-LPSO phase and the matrix. Its uniform and dense distribution results in the formation of continuous corrosionCorrosion products on the surface, which is beneficial for corrosion resistance.
KW - Corrosion rate
KW - Heat treatment
KW - LPSO phase
KW - Mg–Dy–Zn alloy
KW - Microstructure
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=85185726751&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/93871d64-8e37-3a75-adf0-8e2e27ffd44d/
U2 - 10.1007/978-3-031-50240-8_2
DO - 10.1007/978-3-031-50240-8_2
M3 - Article in conference proceedings
AN - SCOPUS:85185726751
SN - 978-3-031-50239-2
SN - 978-3-031-50242-2
T3 - Minerals, Metals and Materials Series
SP - 7
EP - 13
BT - Magnesium Technology 2024
A2 - Leonard, Aeriel
A2 - Barela, Steven
A2 - Neelameggham, Neale R.
A2 - Miller, Victoria M.
A2 - Tolnai, Domonkos
PB - Springer Science and Business Media Deutschland GmbH
CY - Cham
T2 - Magnesium Technology Symposium held at the Annual Meeting and Exhibition - TMS 2024
Y2 - 3 March 2024 through 7 March 2024
ER -