Microstructure and impression creep characteristics of squeeze-cast AZ91 magnesium alloy containing Ca and/or Bi

Majhi, Jichil; Mondal, A.K.

doi:10.1016/j.msea.2018.12.067

Cited by 43 publications

(22 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Al and Zn element were almost equally electronegative. [ 11,31 ] Thus, the Al–Y and Zn–Y atoms’ clusters can be produced. With the decrease in temperature, the excess solute atoms cannot dissolve in the solid phase in the solidification process of the melt.…”

Section: Resultsmentioning

confidence: 99%

Effect of Microalloyed Al on Microstructure and Corrosion Behaviors of As‐Cast Mg–Zn–Y–Mn Alloys

Zhang

Zhao

et al. 2020

Adv Eng Mater

View full text Add to dashboard Cite

The effect of Al microalloying on microstructure and corrosion behaviors of as‐cast Mg–6Zn–8.16Y–2.02Mn is investigated. Microstructural characterization reveals that Al addition can refine grain and lead to the formation of Al(Y, Zn) phase. When a 0.3 wt% Al is added, the alloy exhibits the lowest weight loss rate of 0.99 mm/Y and displays relatively uniform corrosion morphology. However, alloys with more Al addition present localized corrosion on the surface. It results from more W phase (Mg3Zn3Y2) and a little long‐period stacking order (LPSO) phase along the grain boundary. Electrochemical tests are also used to rationalize the corrosion behaviors observed in weight loss. In conclusion, the decrease in corrosion rate is due to grain refinement, optimal quantification of Al(Y, Zn) with short‐rod shape and LPSO phase.

show abstract

Section: Resultsmentioning

confidence: 99%

Effect of Microalloyed Al on Microstructure and Corrosion Behaviors of As‐Cast Mg–Zn–Y–Mn Alloys

Zhang

Zhao

et al. 2020

Adv Eng Mater

View full text Add to dashboard Cite

show abstract

“…Alloying proves to be the most fundamental way of improving mechanical properties and corrosion resistance of magnesium alloys, due to the efficiency and low cost of the process. It is reported that adding the cost-effective element bismuth (Bi) to Mg-based alloys could improve the mechanical properties and resistance to corrosion simultaneously when Bi presents in the α-Mg matrix with solutionized state and/or nano-scaled Mg-Bi precipitates (Tok et al, 2015;Majhi and Mondal, 2019). Bi has positive effects as it is able to form a thermally stable Mg 3 Bi 2 phase in the Mg alloys and because of its non-toxicity (He et al, 2019;Meng et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Microstructural Characteristics, Mechanical and Corrosion Properties of an Extruded Low-Alloyed Mg-Bi-Al-Zn Alloy

Cheng

Liu

et al. 2020

Front. Mater.

View full text Add to dashboard Cite

An extruded low-alloyed Mg-Bi-Al-Zn alloy combining excellent tensile properties (YS = 201 MPa, EL = 29. 4%) with high corrosion resistance (P i = 0.14 mm/a) for biomedical application is successfully developed in this study. The extruded alloy is mainly composed of dynamic recrystallized (DRXed) grains (2.32 ± 0.12 µm) and strongly textured coarse non-DRXed grains, as well as certain nano-scaled Mg 3 Bi 2 precipitates (135.68 ± 27.86 nm). Note that most basal planes for non-DRXed grains are preferentially distributed parallel to the extrusion direction. The study explored the dependences of the properties and relevant mechanisms of the studied alloy on its microstructural characteristics in terms of grain size, grain orientation, and precipitates.

show abstract

“…Magnesium alloys are new light-weight metal structural materials [1][2][3][4]. Mg-Al-Zn (AZ series) alloys are among the most popular magnesium alloys and widely used for commercial applications, owing to their low cost, excellent room temperature strength, good die castability and favorable corrosion resistance [5]. Although a majority of AZ series alloys are applied as die-cast parts [6], the wrought AZ series alloys have attracted lots of researches [7][8][9], due to high strength, high ductility and good formability of wrought Mg alloys [10,11].…”

Section: Introductionmentioning

confidence: 99%

“…Former research revealed that existence of the Mg 17 Al 12 phase promoted migration and sliding of grain boundaries during the creep test, leading to poor creep resistance of AZ series alloys, both distributing at grain boundaries and discontinuously precipitating in grains [16]. There are two methods to improve the creep resistance of AZ series alloys, i.e., restraining the formation of the Mg 17 Al 12 phase and introducing thermally stable secondary phases [5]. Co-addition of Si, Ca and rare earth elements into AZ series alloys can introduce heat-resistant secondary phases, such as Al 2 Ca, Al 2 RE, Al 11 RE 3 , CaMgSi and Mg 2 Si.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Microstructures, Tensile Properties and Creep Characteristics of as-Extruded AZ91 Magnesium Alloy Containing Si, Ca and Rare Earth Elements

Wu¹,

Cheng

Zheng

et al. 2019

Metals

View full text Add to dashboard Cite

Wrought AZ (Mg-Al-Zn) series alloys have attracted lots of researches, due to low cost, high strength and good formability. Few researches focus on creep characteristics of wrought AZ series alloys, which might be of significance to extensive use of low-cost wrought Mg-Al based alloy at elevated temperature. The microstructures, tensile properties and creep characteristics of as-extruded Mg-9Al-Zn-0.5RE-0.5Ca-0.5Si (wt.%, named AZXSE91000) alloy were investigated by optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffractometer (XRD), TEM (transmission electron microscopy), tensile tests and tensile creep tests (40-100 MPa, 125-150 • C). The as-extruded AZXSE91000 alloy exhibited good tensile strength both at room temperature and elevated temperature. The co-addition of Si, Ca and rare earth elements can improve the heat resistance of as-extruded AZ91 alloy resulting from fragmented heat-resistant particles hindering grain boundaries sliding. The steady creep rates of as-extruded AZXSE91000 alloy can be comparable with that of as-cast AZ91 alloy under similar experimental conditions. Dislocation climbing and grain boundary slip should dominantly contribute to the creep of as-extruded AZXSE91000 alloy. The asymmetric discontinuous precipitation in crept samples revealed that diffusion played an unneglected role during the creep process.

show abstract

Microstructure and impression creep characteristics of squeeze-cast AZ91 magnesium alloy containing Ca and/or Bi

Cited by 43 publications

References 33 publications

Effect of Microalloyed Al on Microstructure and Corrosion Behaviors of As‐Cast Mg–Zn–Y–Mn Alloys

Effect of Microalloyed Al on Microstructure and Corrosion Behaviors of As‐Cast Mg–Zn–Y–Mn Alloys

Microstructural Characteristics, Mechanical and Corrosion Properties of an Extruded Low-Alloyed Mg-Bi-Al-Zn Alloy

Microstructures, Tensile Properties and Creep Characteristics of as-Extruded AZ91 Magnesium Alloy Containing Si, Ca and Rare Earth Elements

Contact Info

Product

Resources

About