Effect of Minor Er on the Microstructure and Properties of Al-6.0Mg-0.4Mn-0.1Cr-0.1Zr Alloys

Chen, Hailong; Yu, Tao; Qi, Zhongyuan; Wu, Ruizhi; Wang, Guojun; Lv, Xinyu; Fu-guan, Cong; Hou, Linrui; Zhang, Jinghuai; Zhang, Milin

doi:10.1007/s11665-018-3678-y

Cited by 9 publications

(4 citation statements)

References 23 publications

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“…The Al 3 Er phase, which typically appears in pure aluminum, as well as 5xxx and 7xxx aluminum alloys, is a popular new phase obtained by adding Er [5]. According to the Al-Er phase diagram, the Al 3 Er phase can form easily owing to the low eutectic point [6]. Furthermore, the Al 3 Er phase with a melting point of 1067 °C is difficult to dissolve conventionally [7].…”

Section: Introductionmentioning

confidence: 99%

Effects of Al8Cu4Er Phase on Corrosion Behavior of Al–Cu–Mg alloy with Er addition

Shi

Zhou

Zhang

2020

Acta Metall. Sin. (Engl. Lett.)

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The effect of Al 8 Cu 4 Er phase on the corrosion behavior of Al-Cu-Mg alloy with rare earth Er addition in an under-aging state was studied. The results revealed that the addition Er into the Al-Cu-Mg alloy induced the formation of Al 8 Cu 4 Er phase. The Al 8 Cu 4 Er phase can significantly refine the grains during recrystallization, thereby suppressing the continuous precipitation of S-phase at grain boundaries and improving the resistance to intergranular corrosion. Conversely, the corrosion susceptibility of local regions around the Al 8 Cu 4 Er phase with large dimension was higher than that of the AlCuFeMnSi phase, but weaker than that of θ phase, resulting in decreased pitting corrosion resistance.

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Section: Introductionmentioning

confidence: 99%

Effects of Al8Cu4Er Phase on Corrosion Behavior of Al–Cu–Mg alloy with Er addition

Shi

Zhou

Zhang

2020

Acta Metall. Sin. (Engl. Lett.)

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“…1. phase in Al-2.2wt%Li-0.1wt%Zr are formed [25,26]. Carefully inspection of the precipitates reveals that the morphology of the precipitates seems to be spherical.…”

Section: Resultsmentioning

confidence: 99%

“…2). From literature it is known, that addition of Zr to aluminium alloys processed by SPD can lead to reduction of recovery rate during deformation and inhibit recrystallization and abnormal grain growth [25,26]. Additionally, coherent Al 3 Zr precipitates can pin moving dislocations and grain boundaries and shift recrystallization to higher temperatures [27].…”

Section: Discussionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Brzezińska

Urbańczyk-Gucwa

Molak

et al. 2019

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Two strength-age hardening aluminum-lithium alloys: Al-2.3wt%Li and Al-2.2wt%Li-0.1wt%Zr in two different heat treatment conditions: solution state (S) and additionally in aging state (A) were severely plastically deformed by rolling with cyclic movement of rolls (RCMR) method to produce ultrafine -grained structure. Two thermo-mechanical treatments were used: (S+A+RCMR) and (S+RCMR+A+RCMR). To investigate the combined effect of plastic deformation and heat treatment, tensile tests were performed. Microstructural observations were undertaken using scanning transmission electron microscopy (STEM), and scanning transmission electron microscopy (SEM) equipped with electron backscattering diffraction detector (EBSD). Based on the obtained results, it can be deduced that maximum mechanical properties as: yield strength (YS) and ultimate tensile strength (UTS) could be achieved when the microstructure of alloys is in (S+A+RCMR) state. For samples in (S+RCMR+A+RCMR) state, ductility is higher than for (S+A+RCMR) state. The microstructural results shows that the favourable conditions for decreasing grain size of alloys is (S+A+RCMR) state. Additionally, in this state is much greater dislocation density than for (S+RCMR+A+RCMR) state. The microstructure of alloys in (S+RCMR+A+RCMR) state is characterized by grains/subgrains with higher average diameter and with higher misorientation angles compared with (S+A+RCMR) state.

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“…Despite the large number of works devoted to the study of the properties and machining technologies of alloys Al-Mg system [3][4][5][6][7][8][9][10][11][12][13], obtaining longish deformed semi-finished products from these alloys is an urgent task for production.…”

Section: Introductionmentioning

confidence: 99%

Computer Modeling and Analysis of the Energy-Power Process Parameters of the Combined Machining of Alloys Al-Mg System

Sidelnikov¹,

Samchuk²,

Voroshilov³

et al. 2019

KEM

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Article shows the results of studies of the process of combined rolling-extruding of an alloy of the Al-Mg system (AlMg6) under various temperature-speed and deformation conditions. Calculations shows that with increasing metal temperature at the entrance to the deformation center, the values of the forces on the rolls and the die decrease, the increase in drawing leads to an increase in the values of forces on both the rolls and the die, and an increase in the deformation rate leads to hardening of the metal and increasing energy parameters of the process of combined machining. However, the maximum extruding force on the combined machining units is 5-10 times lower than the efforts to obtain the same press products on hydraulic presses. A computer model of the combined machining process created with the help of the DEFORM 3D complex, the analysis of the metal flow is made, the temperature distribution of the metal over the section of the workpiece invstigated when producing round bars of different diameters. Shaping of the metal corresponds to the data of experimental and theoretical studies, while the deformation center has a characteristic appearance, including the gripping zones of the workpiece and its rolling, repressing and extrusion. The peculiarity for this alloy is that with a drawing ratio of μ = 3.7 and a strain rate of ξ = 0.78 s-1, the steady extruding process takes place without completely filling the deformation zone from the side of the roll with a protrusion. An increase in drawing ratio or strain rate leads to a decrease in the contactless zone or to its absence. The change in metal temperature also depends on the presence of a contactless zone, which contributes to an increase in heat transfer from the billet to the rolls. The results of the research were used to develop the technology for the production of welding wire from Al-Mg system alloys.

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Effect of Minor Er on the Microstructure and Properties of Al-6.0Mg-0.4Mn-0.1Cr-0.1Zr Alloys

Cited by 9 publications

References 23 publications

Effects of Al8Cu4Er Phase on Corrosion Behavior of Al–Cu–Mg alloy with Er addition

Effects of Al8Cu4Er Phase on Corrosion Behavior of Al–Cu–Mg alloy with Er addition

Archives of Metallurgy and Materials

Computer Modeling and Analysis of the Energy-Power Process Parameters of the Combined Machining of Alloys Al-Mg System

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