Optimization of Heat Treatment in AZ64 Magnesium Alloy

Liang, Song‐Mao; Ma, Yuequn; Chen, Rongshi; Han, En‐Hou

doi:10.2320/matertrans.mc200756

Cited by 13 publications

(6 citation statements)

References 4 publications

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“…The first peak in the first derivative represents the formation of α-Mg, and the other peak corresponds to the eutectic reaction of intermetallic compounds, i.e., the formation of the LPSO phase and Mg 24 Y 5 phase. In general, solid solution treatments should be carried out in the temperature ranges of 5-15 degrees lower than the solidus temperature [18]. On the basis of thermal analysis results, two temperatures of 763K and 773K were selected for solid solution treatments, which are termed T 1 and T 2 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Effects of Solid Solution Treatments on Microstructures and Tensile Properties of a Mg-Y-Zn-Cu Alloy

Shi

Chen

2013

MSF

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In this study, a Mg-2.1Y-0.5Zn-0.6Cu-0.1Zr (WZC200, in at. %) alloy was prepared by permanent casting method. On the basis of thermal analysis results during solidification process, two temperatures (T1/763K and T2/773K) were selected for subsequent solid solution treatments. Microstructure evolution and the tensile property changes after T4 treatment at T1 and T2 for different holding time were also investigated in this study. The tensile testing results showed that yield strength and ultimate tensile strength were improved with the fraction increase of the lamellae-shaped LPSO phase in the grain interiors, rather than the total fraction of LPSO phase.

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Section: Resultsmentioning

confidence: 99%

Effects of Solid Solution Treatments on Microstructures and Tensile Properties of a Mg-Y-Zn-Cu Alloy

Shi

Chen

2013

MSF

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“…The hardening effect of twins is limited, because it mainly comes from twins grain boundaries by holding back the dislocations gliding and dividing the matrix into smaller grains [7,8]. On the other hand, twinning deformation can increase the number of slip systems through changing the crystalline orientation to enhance the uniform elongation in alloys [9].…”

Section: Resultsmentioning

confidence: 99%

Deformation Behavior and Microstructure of Low Carbon High Manganese Steels in Tensile Strain

Wang

Pei

et al. 2009

MSF

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The mechanical properties of two high manganese steels with manganese contents (15% and 25%) were investigated during tensile tests at room temperature. The results indicated that the strengths of steels were a little low and the elongations were improved greatly with increasing the manganese content. Stress fluctuations were found during tensile tests of the Fe-15Mn steels, and as the strain increased the range of stress fluctuations became wider. The strain hardening exponent n of samples changed with strain in a parabola model. The microstructures before and after deformation were investigated and the results showed that phase transformation of γ (fcc) →ε (hcp) and γ (fcc) →ε (hcp) →α (bcc) induced plasticity occurred in the Fe-15Mn steels. However, in the Fe-25Mn steels, at the beginning stage of the deformation, phase transformation induced plasticity played an important role, and with the increase of deformation, the main mechanism was twinning induced plasticity.

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“…The high values of compressive properties of these sam- ples can be attributed to the alloy composition which contains a large amount of Mg 17 Al 12 intermetallic contents. The intermetallic compound is known for its property enhancement in magnesium alloys because it interferes with the dislocation motions to improve the strength of the alloy [51]. Furthermore, the energy absorption capacity (W) of the porous AZ91 magnesium alloy foams is expressed for the different sintering conditions and porosities.…”

Section: Compressive Properties Evaluationsmentioning

confidence: 99%

Reactive sintering principle and compressive properties of porous AZ91 magnesium alloy foams produced by powder metallurgy approach

Agbedor

Yang

Chen

et al. 2022

Materialwissenschaft Werkst

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Porous magnesium alloy foams have gained tremendous interest from scientists because of their super lightweight, unique mechanical and physical properties. Despite numerous studies suggesting these advanced materials for structural and functional applications, their manufacturing processes remain poorly understood. In this paper, the porous Mg‐9 wt. %Al‐1 wt. % Zn alloy foam was prepared through the reactive sintering principle (i. e. the element metal powder reaction principle) by using the powder metallurgical method that is combined with a pore‐making agent. The chemical and phase compositions of the cell wall microstructure were investigated by X‐ray diffraction and scanning electron microscope equipped with energy dispersive spectrometer. The compressive properties of the foams were evaluated by quasi‐static compression testing. The results of the analysis reveal that low‐temperature sintering can produce qualitative magnesium alloy foams with good mechanical properties by taking advantage of the intermetallic/or intermediate compounds which are formed in the cell wall through metal elements powder diffusion and reaction. Particularly, the foam samples sintered at 380 °C for 12 h gave the best compressive properties owing to the alloy intermetallic contents and the relative density of the foams.

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Optimization of Heat Treatment in AZ64 Magnesium Alloy

Cited by 13 publications

References 4 publications

Effects of Solid Solution Treatments on Microstructures and Tensile Properties of a Mg-Y-Zn-Cu Alloy

Effects of Solid Solution Treatments on Microstructures and Tensile Properties of a Mg-Y-Zn-Cu Alloy

Deformation Behavior and Microstructure of Low Carbon High Manganese Steels in Tensile Strain

Reactive sintering principle and compressive properties of porous AZ91 magnesium alloy foams produced by powder metallurgy approach

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