Mechanical properties and microstructure of new magnesium—lithium base alloys

Sanschagrin, A.; Tremblay, R.; Angers, R.; Dubé, D.

doi:10.1016/s0921-5093(96)10460-3

Cited by 122 publications

(56 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Their results showed that adding such metal markedly improves the strength of these alloys at temperatures above 150 C and at a strain rate 6:67 Â 10 À4 s À1 . 12) Sanschagrin et al 13) and Li and Jones 14) applied rapid solidification and then hot extrusion to evaluate the effects of misch metal on the microstructure and mechanical properties of AZ91 alloy. However, some of these methods have been discussed are only with reference to their effects on the as-cast conditions, or some of them are associated expensive costs of manufacture.…”

Section: Introductionmentioning

confidence: 99%

Tensile Properties of Mg-8Al-xRE Alloys from 300 K to 673 K

Yang

Koo

2003

Mater. Trans.

View full text Add to dashboard Cite

This paper presents the tensile properties of cast and extruded Mg-8Al-xRE (in mass%; x is 0, 1, 2 or 3%) alloys from 300 to 673 K obtained at a strain rate of 8:3 Â 10 À4 s À1 . Mg-8Al-xRE alloys were prepared by melting and casting in a vacuum induction furnace, and extruded at 633 K with a reduction ratio of 90 : 1. RE greatly improves the tensile strength of cast and extruded Mg8Al alloys above 473 K. RE negatively affects the elongation of cast alloys at the studied temperature range but considerably enhances that of extruded alloys. Superplasticity of the extruded alloys is observed at 473 K or above. The strengthening mechanisms and the optimal deformation temperature, T c , of these alloys are discussed in detail.

show abstract

Section: Introductionmentioning

confidence: 99%

Tensile Properties of Mg-8Al-xRE Alloys from 300 K to 673 K

Yang

Koo

2003

Mater. Trans.

View full text Add to dashboard Cite

show abstract

“…It has been widely demonstrated that grain size re nement and texture randomization are effective ways to improve their ductilities [2][3][4][5] . It has also been reported that magnesium alloys containing over 5.5 mass% Li have a bcc structure and show excellent ductility 6,7) . However, Mg-Li alloys also have shortcomings such as low strength and poor corrosion resistance 8,9) .…”

Section: Introductionmentioning

confidence: 91%

Aging Effect of Mg-Sc Alloy with α+β Two-Phase Microstructure

et al. 2016

View full text Add to dashboard Cite

Mg-20.5 at% Sc alloy with hcp (α)+bcc (β) two-phase was investigated to understand the effects of aging treatment at 473 K on microstructure, hardness and tensile properties. A Mg-Sc alloy ingot was prepared by induction melting in an Ar atmosphere, and then hot rolled at 873 K followed by cold rolling into a sheet. The rolled specimens were annealed at 873 K to obtain an α+β two-phase microstructure. The annealed specimens were then aged at 473 K for various time. Vickers hardness of the α+β two-phase alloy drastically increased after a certain incubation time and then reached a maximum hardness of 142.8 HV. The incubation time of the Mg-20.5 at% Sc alloy with the α+β two-phase was longer than that of the same alloy with a β single-phase. Ultimate tensile strength (UTS) and elongation of the as-annealed specimen were 280 MPa and 28.2%, respectively. Meanwhile, the specimen aged at 473 K for 14.4 ks showed a UTS of 357 MPa and an elongation of over 12%. The specimen aged for 18 ks showed a higher UTS of 465 MPa, while keeping a better elongation of 6.9%. The age hardening of the MgSc alloys was found to be due to the precipitation of very ne α phase in β phase.

show abstract

“…In the 21st century, with the higher requirement of lightweight in modern industry, Mg-Li alloys have drawn increasing attentions, due to their low density and high specific strength, in aerospace, nuclear industry, ordnance industry and other fields [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

The solution and aging behavior of Mg-8Li-3Al-xCe(x=0, 1.0) alloys

Lin¹,

Wu²,

Fei³

et al. 2021

View full text Add to dashboard Cite

The microstructure and microhardness properties of the as-cast, as-soluted and as-aged alloys of Mg-8Li-3Al-x Ce(x = 0, 1.0) were investigated. The as-cast Mg-8Li-3Al (LA83) alloy consists of α-Mg, β-Li, AlLi and MgLi2Al phases. The as-cast LA83-1Ce alloy consists of α-Mg, β-Li, MgLi2Al, AlCe and Al2Ce phases. Besides, the addition of Ce can refine and spheroidize the microstructure of as-cast LA83 alloy. After the addition of Ce, the HV of α and β phases were improved by 137 % and 127 %, respectively, and the HV value difference between α and β became small. Heat treatment can raise the alloy-HV, α-HV and β-HV of LA83 and LA83-1Ce alloys. The variation in hardness during aging process is attributed to the precipitation of MgLi2Al phase and the possibility of the transformation from AlLi phase to MgLi2Al phase. With the increase of aging temperature, the size of MgLi2Al phase becomes larger apparently, causing the age softening phenomenon happens.K e y w o r d s : Mg-Li alloy, Ce, aging behavior microhardness, microstructure

show abstract

Mechanical properties and microstructure of new magnesium—lithium base alloys

Cited by 122 publications

References 6 publications

Tensile Properties of Mg-8Al-xRE Alloys from 300 K to 673 K

Tensile Properties of Mg-8Al-xRE Alloys from 300 K to 673 K

Aging Effect of Mg-Sc Alloy with α+β Two-Phase Microstructure

The solution and aging behavior of Mg-8Li-3Al-xCe(x=0, 1.0) alloys

Contact Info

Product

Resources

About