The effect of Ca and RE elements on the precipitation kinetics of Mg17Al12 phase during artificial aging of magnesium alloy AZ91

Esgandari, B. Amir; Mehrjoo, H.; Nami, B.; Miresmaeili, S.M.

doi:10.1016/j.msea.2011.03.022

Cited by 78 publications

(24 citation statements)

References 20 publications

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“…The effect of various minor alloying elements on the aging response in AZ91 has been reported, for example, it has been shown that the addition of Pb, Ca, Au and RE elements delays the hardening kinetics or decreases the peak hardness value, in spite of suppression of discontinuous precipitation. [8][9][10] However, in the present study, with increasing Sn content, the hardness after solid solution treatment becomes higher, and increases steeply during the aging treatment, as shown in Fig. 3.…”

Section: Discussioncontrasting

confidence: 41%

“…There have been several works on the suppression of discontinuous precipitation by adding minor elements such as Au, Pb, Si, Sb and Sn in AZ91 alloy. [8][9][10] However, the suppression of discontinuous precipitates has not been always associated with the enhancement of the age hardening response. Li et al have shown that the hardness decreases with increasing Sn content in (AZ91) 100-x Sn x (x = 0, 0.5, 1, 1.5 and 2 mass%) alloys after aging at 443 K for 24 h, although discontinuous precipitation is suppressed.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Sn Addition on the Precipitation Behavior in AZ91 Magnesium Alloy

Kim

et al. 2017

Mater. Trans.

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The effect of Sn (1, 3 and 5 mass%) addition on the precipitation behavior of AZ91 alloy has been investigated in the present study. The addition of Sn is effective in suppression of discontinuous precipitation as well as acceleration of continuous precipitation. The Mg 2 Sn particles at the grain boundary effectively reduce the nucleation sites for discontinuous β precipitates, and slow down the movement of the grain boundary. The addition of Sn remarkably enhances the aging response of AZ91. The hardness increases steeply with the start of the aging treatment, resulting in signi cantly higher peak hardness within shorter aging time. The addition of Sn enhances the aging response by solid solution hardening effect as well as by co-precipitation of Mg 17 Al 12 and Mg 2 Sn in the α-Mg matrix.

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Section: Discussioncontrasting

confidence: 41%

Section: Introductionmentioning

confidence: 99%

Effect of Sn Addition on the Precipitation Behavior in AZ91 Magnesium Alloy

Kim

et al. 2017

Mater. Trans.

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“…These developments in the microstructure effectively suppress the dislocation motion and grain boundary sliding. The excess Y addition (N0.9 wt.%) causes the formation of coarse Al 2 Y phase along the grain boundaries and promotes the initiation and propagation of cracks along the grain boundaries leading to decrease in strength [32]..…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Mechanical characterization and corrosion behavior of newly designed Sn and Y added AZ91 alloy

et al. 2015

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“…Figure 2 shows T6 treated AZ91 alloy with continuous and discontinuous precipitates. It has been reported that certain alloying elements such as RE elements which includes Y can suppress the discontinuous precipitation of Mg 17 Al 12 phase at grain boundaries [19]. When Y is added in Mg-Al alloys, it forms intermetallic only with Al and not with Mg.…”

Section: Mg-al Alloysmentioning

confidence: 99%

The Effect of Yttrium Addition on the Microstructure and Mechanical Properties of Mg Alloys

Singh

Srinivasan

Pillai

et al. 2014

Trans Indian Inst Met

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Automotive and aerospace industries shall witness advancement to the next generation if magnesium (Mg) alloys become an integral part of their manufacturing unit primarily because of its light weight. The main limitation which hinders the progress in this direction is the inferior creep properties of Mg alloys. In order to transform this expectation into reality, rare earth (RE) elements are extensively used as alloying elements for improving the room temperature (RT) as well as high temperature (HT) properties. Yttrium (Y) is one of the most extensively used RE elements primarily because of its very high solubility in Mg. Many researchers have studied the influence of Y addition in Mg alloys because of its very high solubility in Mg. However, there is a need to consolidate the work that has been carried out so far which will help in interpolating the future prospects. This review consolidates the work that has been carried out so far in Y addition covering various aspects related to microstructural modifications and RT as well as HT mechanical properties.

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The effect of Ca and RE elements on the precipitation kinetics of Mg17Al12 phase during artificial aging of magnesium alloy AZ91

Cited by 78 publications

References 20 publications

Effect of Sn Addition on the Precipitation Behavior in AZ91 Magnesium Alloy

Effect of Sn Addition on the Precipitation Behavior in AZ91 Magnesium Alloy

Mechanical characterization and corrosion behavior of newly designed Sn and Y added AZ91 alloy

The Effect of Yttrium Addition on the Microstructure and Mechanical Properties of Mg Alloys

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