Effect of Ca and RE (Y, Sm) on microstructure and mechanical properties of as-cast AZ91 magnesium alloy

Zhang, Chenghao; Li, Caixia; Li, Chao; Zhao, Xi-tong

doi:10.1088/2053-1591/ac2c2e

Cited by 6 publications

(7 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By now, the mechanical properties of Fe-containing Ti alloys, e.g., Ti-6Al-4V-xFe (x = 0.18-0.55%) alloys, were found to meet some important industrial needs [11]. The preliminary work of our research group [12] learned that Ti-Fe alloy could have the similar strength with steel, but possesses much higher corrosion resistance than that of steel. So, it may have potential to replace steel in some industrial and marine fields.…”

Section: Introductionmentioning

confidence: 97%

Hot Deformation Behavior and Mechanistic Understanding of New TF400 Titanium Alloy

Dai

Cui

Zhou

et al. 2019

Metals

View full text Add to dashboard Cite

The isothermal hot compression behavior of new Ti–Fe–B (named as TF400) alloy was investigated in the temperature range of 750–950 °C and strain rate range from 0.01 to 10 s−1 with the maximum height reduction of 60% by using a Gleeble 3800 thermal simulator. By considering the effect of strain via variable material parameters, a modified constitutive model was proposed to accurately predict the flow stress. The predicted results demonstrate that the flow stress decreases with the increase of temperature while it increases as the strain rate increases, in good agreement with the present experimental results. A mechanistic understanding of plastic deformation behavior in the TF400 alloys was developed by inspecting the microstructural characteristics prior to and after deformations. Dynamic recrystallization and dynamic transformation were found to be the dominant restoration mechanism during the hot deformation process.

show abstract

Section: Introductionmentioning

confidence: 97%

Hot Deformation Behavior and Mechanistic Understanding of New TF400 Titanium Alloy

Dai

Cui

Zhou

et al. 2019

Metals

View full text Add to dashboard Cite

show abstract

“…Magnesium alloy, as the lightest commercial metal structural material, has a great application prospect in automobile and other industries [1][2][3], but there are still many problems in mechanical properties [4][5][6], deformation workability [7], and corrosion resistance [8]. Therefore, many methods have been used to improve the properties of magnesium alloy [9][10][11], among which the addition of rare earth elements can not only make magnesium alloy show more excellent mechanical properties [12][13][14], but also make magnesium alloy show unique functionality [15,16]. It is found that rare earth elements mainly exist in the form of solid solution and intermetallic compounds in magnesium alloy, and the mechanical properties of the alloy can be improved by solid solution strengthening and second phase strengthening.…”

Section: Introductionmentioning

confidence: 99%

“…It is found that rare earth elements mainly exist in the form of solid solution and intermetallic compounds in magnesium alloy, and the mechanical properties of the alloy can be improved by solid solution strengthening and second phase strengthening. On this basis, the researchers found that the distribution of rare earths in different forms is also an important factor affecting its function [13,17,18].…”

Section: Introductionmentioning

confidence: 99%

Quantitative analysis of rare earth elements in Mg–Zn–RE(Ce, Y, Gd)–Zr alloy

Guo

Wang

et al. 2022

Mater. Res. Express

View full text Add to dashboard Cite

The solid solution amount of rare earth elements and the mass fraction of compounds were measured by low-temperature phase separation technology, the existing forms of rare earth elements in ZK-RE(Ce, Y, Gd) alloy were quantitatively studied, and the difference of solid solution ability of rare earth elements and the factors affecting the number of rare earth compounds were analyzed. The experimental results show that the solid solution amount of rare earth elements mainly depends on their addition amount, Zn and RE inhibit each other's solid solution amount, and the order of solid solution amount (wt.%) of rare earth elements with the same addition amount is GD > Y > Ce. Rare earth elements are mostly distributed in Mg-Zn-RE compounds, and the increase of rare earth content is helpful to form more Mg-Zn-RE compounds. With the same content of elements, the order of mass fraction of Mg-Zn-RE compounds is ZK-Ce system > ZK-Y system > ZK-Gd system. The order of solid solution ability of rare earth elements is Gd >Y > Ce, and the amount of solid solution directly affects the initial element content of compound precipitation in the remaining melt. The influence of Zn/Ce ratio in the residual melt of ZK-Ce alloy is shown in the number of rare earth compounds, while the Zn/Y(Gd) ratio in the residual melt of ZK-RE(Y, Gd) alloy determines the type and number of rare earth compounds.

show abstract

Section: Introductionmentioning

confidence: 99%

“…In addition, the Sm 2 O 3 phase can be the core of heterogeneous nucleation in the formation process of PEO coating, so as to increase the number of nucleation and hinder grain growth, also the micro-structure and composition become uniform. Zhang [26] found that Sm elements could combine with Al under certain conditions to form a new phase as the core of heterogeneous nucleation to increase the number of uniform nucleations, and refine grains, which is beneficial to improving the compactness of the coating. Li [27] found that adding an appropriate amount of rare earth Sm to magnesium alloy could refine the precipitates, provide a more uniform composition and micro-structure and improve AZ91D's corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

SmCl₃'s effect on plasma electrolytic oxidation coating's corrosion characteristics on AZ91D

Lan

Xiong

Wang

et al. 2022

Materials Science and Technology

View full text Add to dashboard Cite

Rare earth salt SmCl3 was added to the electrolyte to improve the corrosion performance of the AZ91D magnesium alloy plasma electrolytic oxidation (PEO) coating. The influence of SmCl3 on coating formation, morphology and performance was investigated. The results showed that adding SmCl3 can not only refine the discharge holes but also improve the coating's formation efficiency and its’ combination with the substrate. Potentiodynamic polarisation (PDS) and electrochemical impedance spectroscopy (EIS) tests showed that the corrosion characteristics of the PEO coating were greatly improved with SmCl3's addition. The corrosion current density decreased from 8.208 × 10−4 to 3.733 × 10−8 A cm−2 when the presence of optimum level of SmCl3 in solution (0.25 g L−1). Cyclic polarisation test indicated that the pitting corrosion of AZ92D was improved.

show abstract

Effect of Ca and RE (Y, Sm) on microstructure and mechanical properties of as-cast AZ91 magnesium alloy

Cited by 6 publications

References 15 publications

Hot Deformation Behavior and Mechanistic Understanding of New TF400 Titanium Alloy

Hot Deformation Behavior and Mechanistic Understanding of New TF400 Titanium Alloy

Quantitative analysis of rare earth elements in Mg–Zn–RE(Ce, Y, Gd)–Zr alloy

SmCl₃'s effect on plasma electrolytic oxidation coating's corrosion characteristics on AZ91D

Contact Info

Product

Resources

About

Effect of Ca and RE (Y, Sm) on microstructure and mechanical properties of as-cast AZ91 magnesium alloy

Cited by 6 publications

References 15 publications

Hot Deformation Behavior and Mechanistic Understanding of New TF400 Titanium Alloy

Hot Deformation Behavior and Mechanistic Understanding of New TF400 Titanium Alloy

Quantitative analysis of rare earth elements in Mg–Zn–RE(Ce, Y, Gd)–Zr alloy

SmCl3's effect on plasma electrolytic oxidation coating's corrosion characteristics on AZ91D

Contact Info

Product

Resources

About

SmCl₃'s effect on plasma electrolytic oxidation coating's corrosion characteristics on AZ91D