Effect of heat treatment on corrosion behavior of AZ63 magnesium alloy in 3.5 wt.% sodium chloride solution

Li, Jiarun; Jiang, Quantong; Sun, Hao; Li, Yantao

doi:10.1016/j.corsci.2016.05.019

Cited by 225 publications

(57 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Owing to the effect of microgalvanic corrosion, pitting corrosion occurred in the corrosion surface. Similar results can be found in many previous studies regarding the corrosion behavior of Mg–Al–Zn alloys …”

Section: Resultssupporting

confidence: 92%

Evaluation of corrosion resistance of multipass friction stir processed AZ31 magnesium alloy

Liu

Shen

Tang

et al. 2019

Materials & Corrosion

View full text Add to dashboard Cite

Multipass friction stir processing (FSP) is an effective method to produce a homogeneous microstructure and enhance the mechanical properties of magnesium (Mg) alloys. However, few studies have concentrated on the variation of corrosion resistance of Mg alloys during multipass FSP. Electrochemical alternating current (AC) impedance, polarization behavior, hydrogen evolution, and corrosion morphology were used to investigate the effects of subsequent passes on the corrosion resistance of FSP AZ31 plates. A quasi‐in‐situ observation of the growth of corrosion products was carried out to further study the corrosion behaviors of FSP AZ31 alloy. It is found that subsequent passes could further reduce the grain size of FSP AZ31 alloy and result in an increase in the hardness compared with the first pass. Moreover, subsequent passes are beneficial to the improvement in the corrosion resistance of AZ31 alloy. Pitting corrosion occurs in FSP AZ31 plates, which has not changed after subsequent passes.

show abstract

Section: Resultssupporting

confidence: 92%

Evaluation of corrosion resistance of multipass friction stir processed AZ31 magnesium alloy

Liu

Shen

Tang

et al. 2019

Materials & Corrosion

View full text Add to dashboard Cite

show abstract

“…In the last few years, the automotive, aerospace and electronic products industries, among others, have triggered renewed interest in magnesium alloys as structural materials due to properties such as low density (1.74 g/cm 3 ), high specific strength and stiffness, electromagnetic shielding capacity, excellent machinability and good castability [1,2].…”

Section: Introductionmentioning

confidence: 99%

Study of the formation of alkaline electroless Ni-P coating on magnesium and AZ31B magnesium alloy

Zuleta

Correa

Castaño

et al. 2017

Surface and Coatings Technology

View full text Add to dashboard Cite

In this work, alkaline electroless Ni-P coatings were directly formed on commercial purity magnesium and AZ31B magnesium alloy substrates using a process that avoided the use of Cr(VI) compounds. The study focused on two aspects of coating formation: (i) the effect of the substrate roughness on the kinetics of the electroless Ni-P deposition process on magnesium; (ii) the morphological and chemical evolution of the coating on both magnesium and the AZ31B alloy. For these purposes, gravimetric measurements, scanning electron microscopy (SEM), X-ray diffraction (XRD), Rutherford backscattering spectrometry (RBS) and open-circuit potential (OCP) measurements were employed. It is shown that a relatively rough substrate promotes the rapid formation of the Ni-P coating on the substrate surface in comparison with smoother substrates. Furthermore, the presence of fluoride ions derived from the NH 4 HF 2 reagent in the electroless Ni-P plating bath leads to formation of MgF 2 a few seconds after immersion in the bath; the MgF 2 . Subsequently, crystals of NaMgF 3 , with a cubic morphology, are developed, which later become embedded in the Ni-P matrix. The presence of fluorine species passivates the substrate during coating formation and hence restricts the decomposition of the electroless Ni-P plating bath, which can occur due to release of Mg 2+ ions. Finally, according to gravimetric measurements, SEM and XRD, the plating process is initially faster on magnesium than on the alloy.

show abstract

“…Here, R s , R ct , R f , and CPE represent the solution resistance, charge transfer resistance, film resistance, and electric double-layer capacity, respectively. In general, higher values of R ct and R f indicate better corrosion resistance, while lower values of CPE 1 and CPE 2 indicate a Please check if the original meaning is retained and thicker film on the surface of the alloys [25,26]. The Mg-7Li-3Al-0.4Ca, Mg-7Li-3Al-0.8Ca, and Mg-7Li-3Al-1.2Ca alloys exhibited higher R ct and R f values than the Mg-7Li-3Al alloy, implying that the corrosion resistance of the extruded Mg-7Li-3Al alloy can be increased by the addition of Ca.…”

Section: Immersion Testmentioning

confidence: 99%

Effect of Ca Content on the Mechanical Properties and Corrosion Behaviors of Extruded Mg–7Li–3Al Alloys

Xiong

Yang

Deng

et al. 2019

Metals

View full text Add to dashboard Cite

The effect of Ca addition on the microstructure, mechanical properties, and corrosion behaviors of the extruded Mg–7Li–3Al alloys was investigated. The results showed that the extruded Mg–7Li–3Al–xCa alloys consisted of α-Mg (hcp) + β-Li (bcc) matrix phases and Al2Ca. With increasing Ca content, the amount and morphology of the Al2Ca phase changed significantly. The grains of the extruded Mg–7Li–3Al–xCa alloys were refined by dynamic recrystallization during the extrusion process. The tensile tests results indicated that the extruded Mg–7Li–3Al–0.4Ca alloy exhibited favorable comprehensive mechanical properties; its ultimate tensile strength was 286 MPa, the yield strength was 249 MPa, and the elongation was 18.7%. The corrosion results showed that this alloy with 0.4 wt.% Ca addition exhibited superior corrosion resistance, with a corrosion potential Ecorr of −1.48742 VVSE, attributed to the formation of protective Al2Ca phases.

show abstract

Effect of heat treatment on corrosion behavior of AZ63 magnesium alloy in 3.5 wt.% sodium chloride solution

Cited by 225 publications

References 54 publications

Evaluation of corrosion resistance of multipass friction stir processed AZ31 magnesium alloy

Evaluation of corrosion resistance of multipass friction stir processed AZ31 magnesium alloy

Study of the formation of alkaline electroless Ni-P coating on magnesium and AZ31B magnesium alloy

Effect of Ca Content on the Mechanical Properties and Corrosion Behaviors of Extruded Mg–7Li–3Al Alloys

Contact Info

Product

Resources

About