Effect of long-period stacking ordered phase on microstructure, mechanical property and corrosion resistance of Mg alloys: A review

Xu, Daokui; Han, En‐Hou; Xu, Yuanyuan

doi:10.1016/j.pnsc.2016.03.006

Cited by 157 publications

(33 citation statements)

References 97 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Figure 4b reveals that the alloy ZK60 is prone to localized corrosion, which tends to form deep cracks on the surface, while uniform corrosion occurs predominantly in the alloy WZ21. Magnesium alloys with the LPSO phase have attracted a great deal of attention in the last years, owing to their outstanding properties profile, including high mechanical strength, fatigue, and corrosion resistance [26]. A large hope has been fostered that these materials can boost bio-medical performance and applications by taking advantage of their high strength and low corrosion rate.…”

Section: Resultsmentioning

confidence: 99%

“…Arrows indicate the working direction: X on (a) and (b) denotes the longitudinal direction of multi-axial isothermal forging (MIF) (see [27] for details) and ED on (c) corresponds to the extrusion direction. Magnesium alloys with the LPSO phase have attracted a great deal of attention in the last years, owing to their outstanding properties profile, including high mechanical strength, fatigue, and corrosion resistance [26]. A large hope has been fostered that these materials can boost bio-medical performance and applications by taking advantage of their high strength and low corrosion rate.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Corrosion Fatigue of Fine Grain Mg-Zn-Zr and Mg-Y-Zn Alloys

Linderov

Васильев

Мерсон

et al. 2017

Metals

View full text Add to dashboard Cite

Corrosion fatigue data for magnesium alloys are still scarce. The present communication reports the results of microstructural investigations and fatigue testing of the fine grain Mg-Zn-Zr (ZK60) alloy after multiaxial isothermal forging and of the hot extruded Mg-Y-Zn (WZ21) alloy in air and in the 0.9% NaCl water solution. Both of the alloys demonstrate a very good high-cycle fatigue performance in air. However, the significant drop of fatigue resistance is observed in the corrosive environment. Results are discussed from perspectives of potential applications and future studies.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Corrosion Fatigue of Fine Grain Mg-Zn-Zr and Mg-Y-Zn Alloys

Linderov

Васильев

Мерсон

et al. 2017

Metals

View full text Add to dashboard Cite

show abstract

“…Previous studies have proved that Mg–RE–Zn alloys possess very attractive mechanical properties and high corrosion resistance derived from long period stacking ordered (LPSO) structures or stacking faults (SFs), where RE is short for rare earth, such as Gd (Zhang, Ba, et al, ; Zhang, Wang, et al, ; Zhang, Wang, Ba, Wang, & Xue, ; Zhang, Zhang, Liu, Yang, & Wang, ), Dy (Bi et al, ; Peng et al, ), Ho (Zhang, Zhang, et al, ), and Er (Leng et al, ; Zhang, Xu, et al, ). The LPSO structures and SFs contain high levels of the solute elements RE and Zn, and can inhibit basal slip, activate non‐basal slip, and further refine Mg recrystallized grains during hot working, thus significantly improving the mechanical properties of these Mg alloys (Jiao et al, ; Leng et al, ; Xu, Han, & Xu, ; Zhang, Zhang, et al, ; Zhang, Xu, et al, ; Zhang, Zhang, et al, ; Zou, Chen, & Chen, ). Furthermore, a significant improvement in resistance to corrosion was reported for LPSO‐containing Mg–Gd–Zn‐based alloys (Zhang, Ba, et al, ; Zhang, Ba, Wang, Wu, & Xue, ; Zhang, Wang, et al, ) and SF‐containing Mg–Ho–Zn and Mg–Er–Zn alloys (Leng et al, ; Zhang, Xu, et al, ; Zhang, Zhang, et al, ).…”

Section: Introductionmentioning

confidence: 99%

Corrosion behavior and mechanical degradation of as‐extruded Mg–Gd–Zn–Zr alloys for orthopedic application

et al. 2019

View full text Add to dashboard Cite

The microstructures, corrosion behavior, and mechanical degradation of the as‐extruded Mg–6.0Gd–0.5Zn–0.4Zr (wt %, GZ60K) and Mg–6.0Gd–1.0Zn–0.4Zr (wt %, GZ61K) alloys were investigated. In both alloys, stacking faults and precipitates are formed in the recrystallized microstructures. The corrosion rate of GZ61K calculated by the hydrogen evolution in simulated body fluid is 0.34 ± 0.13 mm/year, which is lower than that of GZ60K (0.45 ± 0.09 mm/year); and the current density of GZ61K (5.23 ± 1.41 μA cm−2) is much lower than that of GZ60K (11.95 ± 3.37 μA cm−2). The corrosion results indicate GZ61K is more resistant to corrosion than GZ60K, but GZ60K presents more uniform corrosion mode as compared to GZ61K. After immersion in simulated body fluid for 7, 14, and 21 days, a slight decrease in the strength of both alloys is observed. The yield strength half‐life is assessed for mechanical degradation and determined to be 125 and 85 days for GZ60K and GZ61K, respectively. The as‐extruded GZ60K alloy with more uniform corrosion and longer mechanical integrity shows promising potential for orthopedic application.

show abstract

“…However, their inherent strengths are relatively lower when compared with steel and aluminum alloys, and lots of effort still need to be made to improve their strengths for broader applications [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…Several studies have already been conducted on microstructure and property evolutions of LPSO-containing Mg-RE-Zn ternary alloys during ECAP [22][23][24][25]. Wu et al [24] found that ECAP developed a bimodal microstructure with large deformed grains (Mg and LPSO) and sub-micron sized dynamically recrystallized (DRXed) grains in Mg 94 Y 4 Zn 2 (at %) alloy. Our previous study indicates that Mg 24 Y 5 particles could also be dynamically precipitated during multi-pass ECAP of Mg 94 Y 4 Zn 2 alloy, and after 16 passes ECAP, the alloy displays excellent mechanical properties with compression strength of 611 MPa and fracture strain of 20.1% [25].…”

Section: Introductionmentioning

confidence: 99%

Preparation, Microstructure Evolutions, and Mechanical Property of an Ultra-Fine Grained Mg-10Gd-4Y-1.5Zn-0.5Zr Alloy

Liu

Bai

et al. 2017

Metals

View full text Add to dashboard Cite

Abstract:In this work, the microstructural evolutions and mechanical properties of an as-cast Mg-10Gd-4Y-1.5Zn-0.5Zr (wt %) alloy during successive multi-pass equal channel angular pressing (ECAP) were systematically investigated by X-ray diffractometer, scanning electron microscopy, transmission electron microscopy, and compression test. The obtained results show that the microstructure of as-cast alloy consists of α-Mg grains, Mg 3 Gd island phase, few Y-rich particles, and lamellar 14H LPSO (long period stacking ordered) phase located at the grain boundaries. During ECAP, the Mg 3 Gd-type phase is crushed and refined gradually. However, the refined Mg 3 Gd particles are not distributed uniformly in the matrix, but still aggregated at the interdendritic area. The 14H phase becomes kinked during the early passes of ECAP and then broken at the kinking bands with more severe deformation. Dynamic recrystallization of α-Mg is activated during ECAP, and their average diameter decreases to around 1 µm, which is stabilized in spite of increasing ECAP passes. Moreover, nano-scale γ phases were dynamically precipitated in 16p ECAP alloy. Compression tests indicate that 16p ECAP alloy exhibits excellent mechanical property with compressive strength of 548 MPa and fracture strain of 19.1%. The significant improvement for both strength and ductility of deformed alloy could be ascribed to dynamic recrystallization (DRX) grains, refined Mg 3 Gd-type and 14H particles, and dynamically precipitated γ plates.

show abstract

Effect of long-period stacking ordered phase on microstructure, mechanical property and corrosion resistance of Mg alloys: A review

Cited by 157 publications

References 97 publications

Corrosion Fatigue of Fine Grain Mg-Zn-Zr and Mg-Y-Zn Alloys

Corrosion Fatigue of Fine Grain Mg-Zn-Zr and Mg-Y-Zn Alloys

Corrosion behavior and mechanical degradation of as‐extruded Mg–Gd–Zn–Zr alloys for orthopedic application

Preparation, Microstructure Evolutions, and Mechanical Property of an Ultra-Fine Grained Mg-10Gd-4Y-1.5Zn-0.5Zr Alloy

Contact Info

Product

Resources

About