Mechanical behavior of a Mg/Al composite rod containing a soft Mg sleeve and an ultra hard Al core

Feng, Bo; Xin, Yunchang; Yu, Huihui; Hong, Rui; Qing, Liu

doi:10.1016/j.msea.2016.08.069

Cited by 29 publications

(13 citation statements)

References 51 publications

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“…Obviously, co-extrusion of MB26 (hard sleeve)/7075 (ultra-hard core) composite rod can hardly change the texture type of the Mg component, even at high extrusion speeds. Feng et al [21,22] also suggests that, in AZ31 (soft sleeve)/7075 (ultra-hard core) composite rod, the extruded AZ31 sleeve retains the typical texture. The main reason may be that the axisymmetrical friction stress surrounds with ED and approximately parallels to the direction that is between the rod and the die, even though a drastic friction stress exists at Mg/Al interface during extrusion.…”

Section: Experimental Methodsmentioning

confidence: 97%

“…The cracking at interface is influenced by the intermetallic compounds at interface and the thickness of interfacial diffusion layer [20,40,41]. In addition, Table 2 also shows the CYS and UCS values of some other studies on the co-extrusion of Mg/Al composite rods [20][21][22]. For the AZ31 (soft sleeve)/7075 (ultra-hard core) composite rods processed by co-extrusion and two-stage aging [21,22], when the volume fraction of Al (V AL ) is at the range of 8.4%-24.2%, the CYS of the composite rods ranged from 194 to 227 MPa.…”

Section: Interface Bondingmentioning

confidence: 99%

“…However, a low-strength Al core cannot effectively enhance the strength [12]. Hence, in order to achieve a significantly strengthening effect of Mg alloy rods, recently some other investigations have been conducted via using a high-strength Al alloy to strengthen a Mg alloy rod, e.g., AZ31/7050 [20][21][22]. It has been proved that a high-strength Al alloy core is beneficial to enhance the strength of Mg/Al composite rods.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Extrusion Speed on the Microstructure Evolution, Interface Bonding and Mechanical Response of Mg MB26/Al 7075 Composite Rod

Zhang

Zhou

et al. 2018

Acta Metall. Sin. (Engl. Lett.)

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The Mg MB26/Al 7075 composite rod, in which Mg MB26 serves as the sleeve and Al 7075 serves as the core, is fabricated via the process of co-extrusion. The influence of extrusion speed on the microstructure evolution, interface bonding and mechanical response of the Mg MB26/Al 7075 composite rod is investigated. The results show that the typical extrusion texture of Mg sleeve does not change during co-extrusion; however, the average grain size in the Mg sleeve slightly changes from 1.57 lm in the case of extrusion speed of 0.3 mm/s to 2.78 lm in the case of extrusion speed of 2.1 mm/s. The thickness of interface transition layer increases significantly from 5.5 to 50 lm, and therefore, the interface bonding becomes deteriorative with increasing extrusion speed; in particular, many cavities emerge in the case of 1.2 and 2.1 mm/s.

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Section: Experimental Methodsmentioning

confidence: 97%

Section: Interface Bondingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of Extrusion Speed on the Microstructure Evolution, Interface Bonding and Mechanical Response of Mg MB26/Al 7075 Composite Rod

Zhang

Zhou

et al. 2018

Acta Metall. Sin. (Engl. Lett.)

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“…Currently, solid-solid synthesis has been widely used because of fewer pores, oxidation inclusions and higher bonding strength than traditional fusion techniques. Solid-solid synthesis includes rolling 8 , hot-pressing 9 , explosive welding 10 , extrusion 11,12 and two or more of them (such as explosive welding and rolling 5 , hot-pressing and rolling 13 and so on). For instance, Zhang et al 8 manufactured Al/Cu/Ti/Cu/Al laminated composites via cold-rolling, exploring the fracture mechanism.…”

Section: Introductionmentioning

confidence: 99%

Effect of Interface on Mechanical Properties of Ti/Al/Mg/Al/Ti Laminated Composites

et al. 2020

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Ti/Al/Mg/Al/Ti laminated composites were fabricated via hot-pressing at 350 °C, 400 °C and 450 °C successfully. The influences of interface morphology, diffusion zone, constraint effect on the mechanical properties were investigated. At Ti/Al interface, intermetallic compounds aren't found. Whereas, they form at Al/Mg interface. With the increasing temperature, the bonding strength of Al/Mg interface doesn't change linearly, and the maximum strength is obtained at 400 °C because of intermetallic compounds with appropriate thickness. With the increase of temperature, the hardness at both Ti/Al and Al/Mg interfaces increases owing to the solid solution and the intermetallic phases. Also, the ultimate tensile strength of LMCs increases with sacrificing the fracture elongation. The rule of mixture is used to predict the theoretical strength. It is found that the theoretical values are less than the measured, and the reasons may relate to interfaces in Ti/Al/Mg/Al/Ti laminated composites.

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“…Metallic multilayer materials, also called multilayer composites [1,2], cladding materials [3], clad composites [4,5], clad plates [6,7], bimetal composites [8,9] , composite rods [10,11] and clad wires [12], have been widely used in many industrial fields such as kitchen utensils [6,[13][14][15], automobile industry [9,14,16,17], aerospace [6,18], shipbuilding [6], biomedical devices [19] and heat exchangers [9,14,16,17]. Various combinations of materials like Al/St [6,9,20], Al/Ti [7,18,21,22], Al/Mg [11], Al/Ag [23], Al/Cu/Al [4,5], Cu/Zn/Al [1], STS/ Al/Cu [13], Cu/Ti [8], Ti/Cu/Ti [24], Ni/Cu [16] and Cu/St [12,25] have been employed to exploit excellent mechanical, physical, and chemical properties of each material in a new unit material. Copper cl...…”

Section: Introductionmentioning

confidence: 99%

An investigation on micro-hardness, micro-structure and ductility of clad layer in copper clad aluminum wire under multi stage–NCWD

Sichani

Rahnama

Raghebi

et al. 2020

Mater. Res. Express

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The copper clad aluminum (CCA) wire was fabricated by roll forming of copper foil around the aluminum wire rode. Non-continuous wire drawing (NCWD) was employed to study the effect of wire drawing parameters on ductility, micro-hardness and microstructure of the copper clad layer. The NCWD process continued without intermediate annealing until cracks were observed on the copper clad layer. The cracks appeared after a 78% reduction in the cross-section. The micro-tensile test was performed on specimens with transverse curvature to determine elongation. A modified correction factor was introduced to correct the effect of curvature size on elongation. The introduced correction factor proportional to the sample characteristics was between 0.7 and 1.4. Moreover, variations in the hardness and microstructure of the copper clad layer were investigated in the base metal and at the welding zone. Before beginning the wire drawing process for the annealed CCA wire with a diameter of 10.1mm and a Cu clad thickness of 0.48mm , the hardness, ductility, UTS and grain size of the clad layer were 87HV, 43%, 103MPa and 80 μm, respectively. At the end of NCWD for 10°a nd the 20% reduction ratio of the die, the diameter of CCA wire reached 4.7mm with a 0.22mm thickness of Cu clad. The hardness, ductility, UTS and grain size of the clad layer were 157HV, 2.9%, 325MPa and 8 μm, respectively.

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Mechanical behavior of a Mg/Al composite rod containing a soft Mg sleeve and an ultra hard Al core

Cited by 29 publications

References 51 publications

Influence of Extrusion Speed on the Microstructure Evolution, Interface Bonding and Mechanical Response of Mg MB26/Al 7075 Composite Rod

Influence of Extrusion Speed on the Microstructure Evolution, Interface Bonding and Mechanical Response of Mg MB26/Al 7075 Composite Rod

Effect of Interface on Mechanical Properties of Ti/Al/Mg/Al/Ti Laminated Composites

An investigation on micro-hardness, micro-structure and ductility of clad layer in copper clad aluminum wire under multi stage–NCWD

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