Effects of Nd on Microstructures and Mechanical Properties of AM60 Magnesium Alloy in Vacuum Melting

Abstract

The microstructure changes brought by the addition of Nd element to AM60 magnesium alloy were studied, the precipitating phases were identified and their influences on the mechanical properties of alloys were investigated. Results show that Nd addition makes the refinement of microstructure of the AM60 alloy, and decreases the size of Mg17Al12 phase. Nd element takes a priority to react with Al element over Mg, Mn and Zn forming binary phase Al11Nd3 with high melting point. Certain content of Nd can increase tensile strength, yield strength and elongation of the alloy. But with too much addition, Nd would combine with more Al in matrix and decrease strengthening effect because Al11Nd3 phase would become coarsening. The mechanical property tests indicate that AM60-0.9Nd alloy has the best properties. Maximum tensile strength, maximum yield strength, maximum elongation are 230 MPa, 127 MPa and 14% respectively, increased by 28%, 48% and 250% respectively.

Effects of semi-solid treatment by electro-magnetic induction on micro-structure evolution and mechanical properties of the Mg-2.4Y-4Nd-0.5Zr-1Ni alloys

“…Yu et al [27] believed that adding 1% Nd in Mg-11.5Gd-4.5Y-0.3Zr could promote the second phase precipitation and grain refinement to improve the mechanical properties. Zhang et al [28] deemed that the elongation of in AM60 via adding 0.9% Nd increased by 250% compared with that of AM60. The elongation of WE43 alloys couldn't meet the mechanical properties of the dissolvable fracturing balls.…”

“…The elongation of WE43 alloys couldn't meet the mechanical properties of the dissolvable fracturing balls. While Nd and Ni elements could improve the compression strength and elongation of Mg alloy according to relevant studies [17,27,28]. Therefore, the quick-solution Mg-2.4Y-4Nd-0.5Zr-1Ni (WE34-1Ni) alloys are employed in this work.…”

Novel AM60-SiO2 Nanocomposite Produced via Ultrasound-Assisted Casting; Production and Characterization

“…There has been a growing interest in developing new structural materials with higher strength-to-weight ratios [1,2,3,4,5,6]. As the lightest metal, Mg is about 35% lighter than Al, although both of them have similar melting points and strengths.…”

“…Various alloying elements such as Ca [2], Nd [3], Si [4], and a combination of them [9,10] have been used to enhance the properties of Mg alloys. These works are consisted of addressing the effects of alloying elements on the microstructure, physical, and mechanical properties of the alloys.…”

Effects of Zr on Microstructure and Conductivity of Er Containing Heat-Resistant Aluminum Alloy Used for Wires

“…Adding Zr to aluminum increases the re-crystallization temperature of aluminum, creep strength, and heat resistance [1][2][3], but the increase of Zr content cause a significant decrease of conductivity of the aluminum alloy. As of now, much investigation has been conducted on the strengthening mechanism of aluminum through the use of Zr [4][5][6], but for the law of effect, the changes in traces of Zr on the conductivity of heat-resistant aluminum alloy and organizational characteristics are minimal.…”