Effects of aging treatment on microstructure and mechanical property of an AZ80N magnesium alloy

Wang, P.C.; Lin, Meng; Lin, Hong‐Ping; Lin, K.M.; Yeh, M.T.; Lin, Charles

doi:10.1016/j.msea.2010.03.015

Cited by 18 publications

(6 citation statements)

References 25 publications

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“…The precipitates in the form of lamellae modified the micromechanical and sclerometrical properties of the alloy, leading to a three-fold improvement in its tribological properties in comparison with the alloy in its initial state. This is consistent with Archard’s law, which says that resistance to abrasive wear depends on the conditions and properties of the material [ 49 ], and is also consistent with the research results discussed in previous studies [ 50 , 51 ]. The above results are also confirmed in graphical form as selected 3D isometric images and color map 2D images of the surfaces after tribological tests ( Figure 12 ).…”

Section: Resultssupporting

confidence: 93%

The Sclerometrical, Mechanical, and Wear Behavior of Mg-Y-Nd Magnesium Alloy after Deep Cryogenic Treatment Combined with Heat Treatment

et al. 2021

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The paper investigates changes in the structure, microhardness, and sclerometrical and tribological properties of a Mg-Y-Nd alloy under the influence of deep cryogenic treatment (DCT) in combination with heat treatment. The solution treatment was carried out at 545 °C for 8 h, aging was carried out at 250 °C for 24 h, and the deep cryogenic treatment applied at different treatment stages was performed at −196 °C. Tests showed a significant increase in the number of β-phase precipitates identified as Mg46.1Y6.25RE3.45 in the alloy subjected to DCT after solution treatment followed by aging. In addition, an approximately 20% reduction of the grain size was observed. Changes in the structure in the precipitation process strengthened the alloy and resulted in an increase of its hardness. At the same time, sclerometric tests allowed the micromechanism of wear and the coefficient of resistance to abrasive wear to be determined. Tribological tests showed a three-fold reduction in the volumetric wear and a considerable reduction of the friction coefficient, with the main mechanism observed during friction being abrasive wear. The most favorable properties of the alloy were obtained after precipitation hardening combined with DCT, resulting in a large increase in resistance to abrasive wear. Additionally, the formation of deep scratches in the examined material was reduced. The introduction of sub-zero treatment reduces the precipitation hardening time, and the results obtained indicate that the service life of the Mg-Y-Nd alloy can be extended.

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Section: Resultssupporting

confidence: 93%

The Sclerometrical, Mechanical, and Wear Behavior of Mg-Y-Nd Magnesium Alloy after Deep Cryogenic Treatment Combined with Heat Treatment

et al. 2021

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“…8b shows the values of Vickers hardness as a function of aging time for the studied alloys. Both alloys exhibit age hardening and reach a peak value at approximately 48 h, indicating a typical precipitation hardening [19,26,27]. However, AEZ830 alloy can achieve a higher peak hardness than AZ80 alloy.…”

Section: Microstructure Of Heat Treated Samplesmentioning

confidence: 99%

Study on the assemblage of Y and Gd on microstructure and mechanical properties of hot extruded Mg–Al–Zn alloy

Yang

Qiu

et al. 2015

Materials Science and Engineering: A

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“…The Mg alloys were strengthened obviously by both the precipitation hardening and the dispersion strengthening after aging [12][13][14]. In die-cast Mg-Al-RE alloys, the results of Nie [11] et al showed that the mechanical properties could be enhanced considering the dynamic nanoscale Al-Mn precipitates during aging at 200 °C.…”

Section: Introductionmentioning

confidence: 99%

An investigation on the precipitates in T5 treated high vacuum die-casting AE44–2 magnesium alloy

Li¹,

Wang²,

Hai³

et al. 2022

Mater. Res. Express

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The AE44-2 magnesium alloy was fabricated via die-casting under high vacuum (denoted as HVDC-AE44-2 alloy). The microstructures and mechanical properties of the aged HVDC-AE44-2 alloys were investigated. It found that age strengthening can be achieved in the HVDC-AE44-2 alloys. This paper reports, the HVDC-AE44-2 alloys after aging at 200 °C for 12 h (T5), the hardness increased by ~8.8 HV (~14.0%), the yield strength (YS) and the ultimate tensile strength (UTS) increased by ~30.5 MPa (~20.4%) and ~22.6 MPa (~9.1%), respectively, while the increase in strength after aging was not accompanied by a significant loss in ductility (The elongation was 19.6% in the die casting. The elongation was 19.1% in aged at 200°C for 12h). It is found that the improved age hardening ability is closely related to the Al4Mn and Al11Mn4 precipitation during aging. Both the α-Mg and the Al11RE3 have crystallographic orientation relationships with the Al4Mn. The slipping of dislocations was impeded by the precipitates during tensile deformation at room temperature, and the <a> dislocations were accumulated around the precipitates, which is the reason for the increase of the HVDC-AE44-2 alloy strength.

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Effects of aging treatment on microstructure and mechanical property of an AZ80N magnesium alloy

Cited by 18 publications

References 25 publications

The Sclerometrical, Mechanical, and Wear Behavior of Mg-Y-Nd Magnesium Alloy after Deep Cryogenic Treatment Combined with Heat Treatment

The Sclerometrical, Mechanical, and Wear Behavior of Mg-Y-Nd Magnesium Alloy after Deep Cryogenic Treatment Combined with Heat Treatment

Study on the assemblage of Y and Gd on microstructure and mechanical properties of hot extruded Mg–Al–Zn alloy

An investigation on the precipitates in T5 treated high vacuum die-casting AE44–2 magnesium alloy

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