Microstructure and corrosion properties for ultrahigh-pressure Mg-Li alloys

Feng, Jiawen; Zhang, Hao; Zhang, Lu; Zou, Guo-Dong; Wang, Jing; Peng, Qiuming

doi:10.1016/j.corsci.2022.110519

Cited by 20 publications

(2 citation statements)

References 24 publications

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“…After heat treatment, both PBF-LB/T4 and PBF-LB/T6-1 parts showed increased R ct and R f . It was evidenced that the electron diffusion process that occurred between the electrolyte to the alloy/oxide interface was suppressed [68]. Besides, there was no inductive loop (R L + L) that appeared in equivalent circuits of PBF-LB/T4 and PBF-LB/T6-1 parts, which indicated no obvious local corrosion.…”

Section: Degradation Behaviormentioning

confidence: 96%

Influence of heat treatment on microstructure, mechanical and corrosion behavior of WE43 alloy fabricated by laser-beam powder bed fusion

Ling,

Li,

Zhang

et al. 2023

Int. J. Extrem. Manuf.

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Magnesium (Mg) alloys are considered to be a new generation of revolutionary medical metals. Laser-beam powder bed fusion (PBF-LB) is suitable for fabricating metal implant with personalized and complicated structure. However, the as-built part usually exhibits undesirable microstructure and unsatisfied performance. In this work, WE43 parts were firstly fabricated by PBF-LB and then subjected to heat treatment. Although high densification rate of 99.91% was achieved using suitable processes, the as-built parts exhibited anisotropic and layered microstructure with heterogeneously precipitated Nd-rich intermetallic. After heat treatment, fine and nano-scaled Mg24Y5 particles were precipitated. Meanwhile, the α-Mg grains undergone recrystallization and turned coarsened slightly, which effectively weakened the texture intensity and reduced the anisotropy. As a consequence, the YS and UTS were significantly improved to 250.2 ± 3.5 MPa and 312 ± 3.7 MPa, respectively, while the elongation still maintained at high level of 15.2%. Furthermore, the homogenized microstructure reduced the tendency of localized corrosion, and promoted the development of uniform passivation film. Thus, the degradation rate of WE43 parts was reduced by an order of magnitude. Besides, in-vitro cell experiments proved its favorable biocompatibility.

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Section: Degradation Behaviormentioning

confidence: 96%

Influence of heat treatment on microstructure, mechanical and corrosion behavior of WE43 alloy fabricated by laser-beam powder bed fusion

Ling,

Li,

Zhang

et al. 2023

Int. J. Extrem. Manuf.

View full text Add to dashboard Cite

show abstract

“…[1][2][3] As the lightest metal structural materials as well as its advantages such as high specic stiffness and good electromagnetic shielding properties, magnesium alloys have great potential for development in aerospace and energy consumption in the automotive eld. [4][5][6] However, the current magnesium alloys still have highlighted drawbacks, such as low strength and poor forming properties, which have a serious constraint on industrial application. 7 One of the common methods to increase the properties of magnesium alloys is to use a surface protective layer.…”

Section: Introductionmentioning

confidence: 99%