Effects of heat treatment on the morphology of long-period stacking ordered phase, the corresponding damping capacities and mechanical properties of Mg–Zn–Y alloys

Lu, Ruopeng; Wang, Jingfeng; Chen, Yongliang; Qin, Datong; Yang, Wei; Wu, Zhongshan

doi:10.1016/j.jallcom.2015.03.208

Cited by 67 publications

(12 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the lamellar phase accompanied by the rod-shaped LPSO phase indicated by E was previously proved to be the same 14H-type LPSO phase as the rod-shaped one. The detailed evolution mechanism of this LPSO structure was also revealed systematically in our previous work [23,24]. …”

Section: Resultssupporting

confidence: 54%

“…In contrast to other alloys reported previously [9], such as as-cast Mg 97 Zn 1 Y 2 , as-extruded AZ31, as-cast WE43, as-cast ZK60 (Table 1), all the investigated alloys in the present work show a lower corrosion current density. Our previous work proved that the Mg 95.33 Zn 2 Y 2.67 alloys exhibited good mechanical and damping properties [24]. Currently, it is revealed that the alloys present considerable anti-corrosion performance, indicating bright prospects for use of the present alloys in light structural materials.…”

Section: Resultsmentioning

confidence: 91%

See 1 more Smart Citation

The Effect of Rod-Shaped Long-Period Stacking Ordered Phases Evolution on Corrosion Behavior of Mg95.33Zn2Y2.67 Alloy

et al. 2018

Self Cite

View full text Add to dashboard Cite

The morphology evolution of long-period stacking ordered (LPSO) phases on corrosion behavior of Mg95.33Zn2Y2.67 alloy is investigated systematically during as-cast, pre-extrusion heat-treated, as-extruded and post-extrusion heat-treated conditions. The second phases in the as-cast alloy are only LPSO phases with a few Y particles. The pre-extrusion heat treatment changed LPSO phases from blocks into a rudimentary rod shape with lamellar structure, subsequently into fine fragments by extrusion, and then into a regular rod shape with lamellar structure followed by post-extrusion heat treatment. Immersion tests and electrochemical measurements in 3.5 wt % NaCl solution reveal that the post-extrusion heat-treated alloy has the best corrosion resistance with the lowest corrosion rate. This is attributed to the rod-shaped LPSO phases, which could hinder corrosion proceeding, and result in corrosion orientated along the direction of rods and forming relatively dense long-strip corrosion products. Our findings demonstrate that the improved corrosion resistance of magnesium alloys with LPSO phases can be tailored effectively by the proceeding technology and post-heat treatment.

show abstract

Section: Resultssupporting

confidence: 54%

Section: Resultsmentioning

confidence: 91%

The Effect of Rod-Shaped Long-Period Stacking Ordered Phases Evolution on Corrosion Behavior of Mg95.33Zn2Y2.67 Alloy

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…With Zn and RE siting on close-packed atomic layers, some Mg-RE-Zn systems (RE = Y, Gd, Tb, Dy, Ho, Er, Tm) form various novel long-period stacking-ordered (LPSO) structures, [23][24][25] which appear in bulk, lamellar block and rod shapes and increase plasticity and toughness by significant amounts. [26][27][28] Furthermore, due to their barrier effects, LPSO structures impact the corrosion resistance of magnesium alloys. Evenly distributed lamellar LPSO structures throughout the whole grain provide better corrosion resistance than the coarser accumulations often observed at grain boundaries.…”

Section: Introductionmentioning

confidence: 99%

Influence of Solution Heat Treatment on the Microstructure, Hardness and Stress Corrosion Behavior of Extruded Resoloy®

Maier

Steinacker

Clausius

et al. 2020

JOM

View full text Add to dashboard Cite

The microstructural changes and corrosion response of Resoloy Ò , a resorbable Mg-Dy-based alloy, are the focus of this study. Hardness, tensile and compressive, and bending tests are used to monitor the changes in the mechanical properties of this material. The corrosion behavior is investigated by stress corrosion of C-rings. Hot-extruded tubes are solution heat-treated at different temperatures and times. The as-extruded condition shows a homogeneous fine-grained microstructure with matrix long-period stacking-ordered (LPSO) structures. Heat treatment at low temperatures and for short times does not significantly change the microstructure but reduces the hardness. Solution heat treatment at relatively high annealing temperatures and long annealing times causes grain growth, resulting in reduced hardness. The microstructure becomes inhomogeneous, medium-sized grains grow, the matrix LPSO structures dissolve, and small bulk LPSO phases develop. The matrix LPSO structures have a positive effect on the corrosion behavior. In particular, the short-term annealing condition shows the most uniform corrosion morphology. Resoloy Ò is not free of pitting corrosion, but none of the samples fails by cracking.

show abstract

“…Mg is one of the lightest structural metals, and it is distinguished by very good specific strength and specific stiffness, the best damping properties among various metallic materials [1,2]. Combining Mg with other materials into composites can maximize the advantages of various materials and obtain materials with excellent comprehensive performance [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Design and Preparation of CNTs/Mg Layered Composites

et al. 2022

View full text Add to dashboard Cite

In order to effectively solve the problem of strength and ductility mismatch of magnesium (Mg) matrix composites, carbon nanotubes (CNTs) are added as reinforcement. However, it is difficult to uniformly disperse CNTs in a metal matrix to form composites. In this paper, electrophoretic deposition (EPD) was used to obtain layered units, and then the CNTs/Mg layered units were sintered by spark plasma sintering to synthesize layered CNTs/Mg composites. The deposition morphology of the layered units obtained by EPD and the microstructure, damping properties, and mechanical properties of the composite material were analyzed. The results show that the strength and ductility of the composite sample sintered at 590 °C were improved compared with the layered pure Mg and the composite sample sintered at 600 °C. Compared with pure Mg, the composites rolled by 40% had a much higher strength but no significant decrease in ductility. The damping properties of the CNTs/Mg composites were tested. The damping–test-temperature curve (tanδ~T) rose gradually with increasing temperature in the range of room temperature to 350 °C, and two internal friction peaks appeared. The damping properties of the tested composites at room temperature decreased with increasing frequency. The layered structure of the CNTs/Mg had ultra-high strengthening efficiency and maintained its ductility. The layered units prepared by EPD can uniformly disperse the CNTs in the composites.

show abstract

Effects of heat treatment on the morphology of long-period stacking ordered phase, the corresponding damping capacities and mechanical properties of Mg–Zn–Y alloys

Cited by 67 publications

References 28 publications

The Effect of Rod-Shaped Long-Period Stacking Ordered Phases Evolution on Corrosion Behavior of Mg95.33Zn2Y2.67 Alloy

The Effect of Rod-Shaped Long-Period Stacking Ordered Phases Evolution on Corrosion Behavior of Mg95.33Zn2Y2.67 Alloy

Influence of Solution Heat Treatment on the Microstructure, Hardness and Stress Corrosion Behavior of Extruded Resoloy®

Design and Preparation of CNTs/Mg Layered Composites

Contact Info

Product

Resources

About