Study of microstructure and XRD diffraction near interface of diffusion bond between Mg/Al dissimilar materials

Li, Y.; Liu, P.; Wang, J.; Ma, Hong

doi:10.1179/143307507x196185

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…Combined with Fick's second law [23][24][25], the mathematical model of references [26,27] and Li et al [28][29][30], the error function solution of the diffusion equation of Fe and Ti under unsteady conditions was obtained. According to the literature [31][32][33] and EDS measured results to establish two interface element concentration distribution Equation (7). Finally, according to the literature [34][35][36][37][38][39] and B.E.Eyrakob's empirical formula [40] to deduce two interface reaction layer thickness Equation (10).…”

Section: Simulation and Calculationmentioning

confidence: 99%

A method for producing ceramic/stainless steel composites by laser welding with calculation optimisation

Zhang

Chen

et al. 2023

Materials Science and Technology

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In this work, SS/ceramic composite material was produced by laser welding with active filler (AgCuTi). The presence of the AgCuTi filler was determined by ensuring that crack-free welds were obtained, and no brittle intermetallic compounds (IMCs) were observed. Unmelted SS was retained by laser offset to the SS side to achieve heat transfer to the filler. The AgCuTi filler was not melted but the eutectic reaction with low melting point still occurred by atomic diffusion. In accordance with the characteristics of laser brazing, a mathematical model for calculating the transient heat transfer of laser brazing was established via finite element method. The simulation results showed that the interface temperature could be directly controlled by controlling the welding power.

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Section: Simulation and Calculationmentioning

confidence: 99%

A method for producing ceramic/stainless steel composites by laser welding with calculation optimisation

Zhang

Chen

et al. 2023

Materials Science and Technology

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“…The high welding efficiency of laser welding makes it suitable for industries for welding dissimilar metals. Currently, Cherepanov et al [16], Zhang et al [17] and Hussain et al [18] have used additional interlayer in laser welding of titanium alloy and SS such as Cu, Ag and Nb. However, no matter which kind of interlayer metal is used, as long as joint is melted completely, brittle Ti-Fe IMCs will be unavoidably formed.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of laser indirect brazed titanium/steel composite joint with a CuZn filler metal

Zeng

Zhang

et al. 2022

Materials Science and Technology

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In this study, the research on the laser welding TC4 alloy and stainless steel dissimilar metals with composite welding mechanism was investigated. Dissimilar joints of TC4 alloy and stainless steel were generated by indirect laser brazing. Moreover, in order to further explored the bonding mechanism of joints, CuZn metal was used as the filler material to study the welding process of TC4 alloy and 304 stainless steel with indirect laser brazing and transition section. The filler was extruded into metal droplets due to the metal expansion during laser welding, which increased the tightness of the joint. With the increase of heat input, the reaction between the filler and the base metals on both sides was more intense. In addition, the tensile strength reached 210 MPa (41% of stainless steel) when the laser power was 624 W.

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“…The heating temperature of it is generally much lower than the parent material and heating uniformly, which avoids adverse impact on physical and chemical properties of the parent material from the conventional welding method, Thus which causes the small stress deformation, and is suitable for connecting the occasion with large area and high dimensional precision [4]. So the vacuum diffusion welding have received more attention in the welding of dissimilar materials, but it forms a series of Mg x Al y brittle intermetallic compound at the joint due to the very small mutual solubility of the two materials while welding Mg/Al by diffusion welding directly, which deteriorates the microstructure and mechanical properties of welding joint [5]. Research shows that, the middle layer of suitable material has a positive effect on inhibiting formation of brittle intermetallic compound between dissimilar metals, and is an important way to improve the welding properties of diffusion welding about dissimilar materials [6,7].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of AZ31B Magnesium-LY12 Aluminum Alloys Diffusion-Bonded Joint

Qin

2014

AMR

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In this paper, AZ31B magnesium alloy/LY12 aluminum alloy were bonded together with copper foil as interlayer by vaeuum diffusion bonding technology at different temperature for holding time 60 min and pressure 2.5MPa. Analysis the microstructure of the joint under the condition of 450°C,and the effects of heating temperature on the shear thrength , microhardness and the width of the interface zone were studied. The results showed that under the condition of 450°C in holding time 60 min and pressure 2.5MPa, the microstructure at interface zone of diffusion brazing joint includes α-Mg solid solution, Mg2Cu, Cu2Mg, γ-Cu solid solution, CuAl, CuAl2 and β-Al solid solution. The width of the interface increases with brazing temperature increasing, and the microhardness gradient of interface zone in the side of aluminum alloy is much higher than that in magnesium alloy side. As the welding temperature increases, the shear strength shows an increasing trend at first and then decreases. When the welding process is 460°C keeping for 60 min, welding pressure is 2.5Mpa, the highest shearing strength of the joint can reach 35 MPa.

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Study of microstructure and XRD diffraction near interface of diffusion bond between Mg/Al dissimilar materials

Cited by 7 publications

References 3 publications

A method for producing ceramic/stainless steel composites by laser welding with calculation optimisation

A method for producing ceramic/stainless steel composites by laser welding with calculation optimisation

Microstructure and mechanical properties of laser indirect brazed titanium/steel composite joint with a CuZn filler metal

Microstructure and Properties of AZ31B Magnesium-LY12 Aluminum Alloys Diffusion-Bonded Joint

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