Newly Developed Technique to Eliminate Hot Cracking with Electromagnetic Vibration for Joining of 2024 Aluminum Alloy

Nikzad, Siamak; Ashuri, H.; Kokabi, A.H.; Shafizadeh, Mahdi; Ferasat, Keyvan

doi:10.1007/s13632-016-0255-3

Cited by 5 publications

(2 citation statements)

References 22 publications

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“…such as near net shape, low forming efforts, reduction of porosity, increasing mechanical properties, and extending die life [2][3][4][5][6][7][8][9][10][11] . Semi-solid forming technology includes thixoforming and rheocasting [1,5,8,11,12] .…”

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confidence: 99%

“…The given liquid fraction can be obtained due to controlling temperature, and time is required to ensure complete transition from dendritic or rosette to spherical structure. Then this material is transferred into a preheated mould [2,5,7,[12][13][14][15] . Thixoforming temperature is the most important parameter, and holding time is the least effective parameter.…”

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confidence: 99%

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Microstructure of shear-induced thixoformed Al-4.5Cu-1.5Mg alloy via RAP and SSTT processes

Nikzad¹,

Ashuri²,

Shafizadeh³

et al. 2017

China Foundry

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mentioning

confidence: 99%

mentioning

confidence: 99%

Microstructure of shear-induced thixoformed Al-4.5Cu-1.5Mg alloy via RAP and SSTT processes

Nikzad¹,

Ashuri²,

Shafizadeh³

et al. 2017

China Foundry

Self Cite

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Review on magnetically controlled arc welding process

Chang

Lü

et al. 2017

Int J Adv Manuf Technol

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Microstructure and Properties of Ti–Al Coating on Titanium Alloy Surface Assisted by Electromagnetic Field

Li,

Xu,

et al. 2024

ACS Omega

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The effect of an alternating electromagnetic field on the microstructure and properties of the Ti−Al coating on the titanium alloy surface is studied. The Ti−Al coating is prepared on the surface of titanium alloy by using an alternative electromagnetic field assisted by high temperature thermal diffusion. The preparation method is simple and easy to operate. The microstructure and element distribution of the coating under different magnetic field intensities are analyzed. The mechanism of improving the comprehensive properties of coatings by alternative electromagnetic fields with different intensities is discussed. The test results show that the outer surface of TA 15 titanium alloy diffused at 850 °C without magnetic field is not smooth, the quality is poor, and internal structure cracks appear. No obvious cracks are found in the coating microstructure of 850 °C diffused by a magnetic field with 10 A current intensity, but there are still some holes. A large number of holes and cracks appear in the coating microstructure with 850 °C diffusion under the magnetic field with 15 A current intensity; mostly longitudinal cracks are perpendicular to the interface and penetrating through the interface, which may be caused by the thermal effect of the magnetic field. The coating diffused under the magnetic field of 20 A current intensity has good overall quality, good bonding with the substrate, relatively flat interface, dense, uniform, and fine structure, and no obvious cracks and holes are found. The main phases are TiAl, Ti 3 Al and elemental Al, and Ti 3 Al has obvious texture, with an average equivalent diameter of 3.2 μm. TiAl has no obvious texture and has an average equivalent diameter of 2.2 μm. The electromagnetic stirring effect makes the strengthening phase in the coating more evenly distributed and reduces component segregation. With the increase of magnetic field intensity, the stress concentration and cracking sensitivity decrease and the migration distance of Ti atoms from the matrix to the coating direction increases. The interfacial hardness of the coating extends outward at first and then decreases, and the maximum hardness reaches 468.2 HV 0.2 . The cracking sensitivity of the coating is reduced by the magnetic field, and the microstructure and properties of the coating are improved.

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Newly Developed Technique to Eliminate Hot Cracking with Electromagnetic Vibration for Joining of 2024 Aluminum Alloy

Cited by 5 publications

References 22 publications

Microstructure of shear-induced thixoformed Al-4.5Cu-1.5Mg alloy via RAP and SSTT processes

Microstructure of shear-induced thixoformed Al-4.5Cu-1.5Mg alloy via RAP and SSTT processes

Review on magnetically controlled arc welding process

Microstructure and Properties of Ti–Al Coating on Titanium Alloy Surface Assisted by Electromagnetic Field

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