Effects of Sm addition on microstructure and mechanical properties of Mg–6Al–0.6Zn alloy

Li, Kejie; Li, Quanan; Xiao-tian, Jing; Chen, Jun; Zhang, Xingyuan; Zhang, Qing

doi:10.1016/j.scriptamat.2009.02.048

Cited by 84 publications

(12 citation statements)

References 8 publications

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“…The volume fractions of the Mg 17 Al 12 and Al 2 Yb phases were decreased and increased, respectively, with increasing Yb content. According to L. Ke-jie et al, 9) the electronegativity difference between two elements and the solidification kinetics of a metallic melt can be used to predict the possibility of intermetallic formation. The larger the electronegativity differences between the two elements, the stronger the bond and the higher the possibility of intermetallic formation.…”

Section: Microstructurementioning

confidence: 99%

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Investigation on the Microstructure and Mechanical Properties of Mg-Al-Yb Alloys

Park

Kim

et al. 2011

Mater. Trans.

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The effects of Yb addition on the microstructure and mechanical properties of Mg-5Al alloy are investigated. The results indicate that the addition of Yb to the Mg-5Al alloy facilitates the formation of a thermally stable Al 2 Yb phase, the refinement of the microstructure and the suppression of the volume fraction of Mg 17 Al 12 phase in Mg-5Al alloy. Yb addition has little effect on the mechanical properties of the experimental alloys tested at room temperature. At elevated temperatures, however, the ultimate tensile strength (UTS) is significantly increased by Yb addition and Mg-5Al-1Yb has the highest UTS value than other experimental alloys. On the other hand, the yield strength (YS) increases at all tested temperatures due to the grain refinement and dispersion strengthening of the secondary phase. Meanwhile, the elongation (") of the experimental alloys decreases at all tested temperatures. Tensile fractographic analysis indicates that cleavage fracture is the dominant mechanism of the Mg-5Al and Mg-5Al-xYb alloys at room temperature. At elevated temperatures, however, the fracture mechanism of experimental alloys mainly changes from cleavage to quasi-cleavage fracture.

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Section: Microstructurementioning

confidence: 99%

“…Earlier studies investigated some single RE such as La, Ce, Nd and Sm. [6][7][8][9][10] However, no research about the effects of ytterbium (Yb) addition on the microstructure and mechanical properties of Mg alloys has been reported.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Microstructure and Mechanical Properties of Mg-Al-Yb Alloys

Park

Kim

et al. 2011

Mater. Trans.

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“…The rare earth element Samarium (Sm) is a white metal that is currently mainly utilized in samarium cobalt magnetic materials [1]. Also, the applications of Sm in other areas have also been developed, such as in Sm enhancing the performance of magnesium alloys through the solid solution strengthening mechanism, since the solid solubility of Sm in magnesium can reach up to 5.8 wt.% [2,3]. Currently, the Sm that is added into an alloy substrate is mainly accomplished through the reduction of samarium oxide by the metallic lanthanum (La).…”

Section: Introduction mentioning

confidence: 99%

“…In contrast, the element Sm cannot be directly obtained from the aforementioned electrolysis process since the reduction potential of Sm 2+ in step (2) was significantly negative than the reduction potential of Li + in the molten salt. Therefore, the electrolysis process is mainly utilized in the Sm-containing interalloy preparation.…”

Section: Introduction mentioning

confidence: 99%

Electrolytic Preparation of Al-Sm Alloy in SmF3-LiF-Sm2O3 Molten Salt System

Zhang¹,

Yang²,

Liu³

et al. 2019

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In the present paper, an Al rod as liquid cathode was added into the SmF3-LiF-Sm2O3 molten salt system and subsequently the Al-Sm alloy was prepared by the liquid cathode electrolysis method. The effects of electrolysis temperature, cathode current density and electrolyte composition on the current efficiency were studied. The results demonstrated that the maximum content of Sm in the Al-Sm interalloy could reach up to 32.8 wt.%, whereas the alloy was mainly composed of the Al substrate, Al4Sm and Al3Sm phases. The current efficiency increased first subsequently decreased as the electrolysis temperature and cathode current density increased. Simultaneously, the electrolyte composition had a high impact on the current efficiency. When the mass ratio of SmF3and LiF was 4, the current efficiency was 62.8 %.

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“…As one of Y subgroup (heavy) rare earth elements, Y is considered to be one of the most effective rare earth elements to improve mechanical properties of magnesium alloys at high temperatures [4,5]. As one of Ce subgroup (light) rare earth elements, Sm has a unique orthorhombic structure and a high solid solubility in Mg [6]. Therefore, Y and Sm is an interesting combination of rare earth elements, and Mg-Y-Sm alloy is a new type of heat resistant magnesium alloy [7].…”

Section: Introductionmentioning

confidence: 99%

A primary study on tensile strength stability of Mg-5Y-3Sm-0.5Sb alloy

2017

2017 6th International Conference on Advanced Materials and Computer Science (ICAMCS 2017)

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Abstract. The tensile strength stability of aging hardened Mg-5Y-3Sm-0.5Sb alloy was primarily studied. The results showed that the alloy has good tensile strength at room and high temperature. The tensile strength decreases slowly from 258 MPa at room temperature to 195 MPa at 300 o C. The tensile strength stability is superior to that of commercial heat resistant magnesium alloy WE54 developed most successfully. The formation of Mg 24 Y 5 phase is observed in the alloy. The tensile strength of the alloy keeps a linear relationship with the hardness of strengthening phase Mg 24 Y 5 . The reason for the tensile strength stability is mainly attributed to the hardness stability of Mg 24 Y 5 phase in the alloy.

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Effects of Sm addition on microstructure and mechanical properties of Mg–6Al–0.6Zn alloy

Cited by 84 publications

References 8 publications

Investigation on the Microstructure and Mechanical Properties of Mg-Al-Yb Alloys

Investigation on the Microstructure and Mechanical Properties of Mg-Al-Yb Alloys

Electrolytic Preparation of Al-Sm Alloy in SmF3-LiF-Sm2O3 Molten Salt System

A primary study on tensile strength stability of Mg-5Y-3Sm-0.5Sb alloy

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