Transient behaviour of torque and process efficiency during inertia friction welding

Tung, Daniel Joseph; Mahaffey, D. W.; Senkov, O.N.; Semiatin, S. L.; Zhang, Wei

doi:10.1080/13621718.2018.1491377

Cited by 12 publications

(5 citation statements)

References 13 publications

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“…Pengujian dilakukan dengan kecepatan beban puntir konstan sebesar 300 N/min, hingga spesimen patah. Hasil pengujian puntir dihitung dengan rumus yang terdapat dalam penelitian Abdulla et al, Tyagita et al dan Tung et al [15][16][17].…”

Section: Chemical Composition (Wt %)unclassified

Sifat Mekanis dan Struktur Mikro pada Sambungan Las Gesek Baja SCM415H untuk Aplikasi Poros Roda Belakang

Anggraini

Putra

2019

JRM

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SIFAT MEKANIS DAN STRUKTUR MIKRO PADA SAMBUNGAN LAS GESEK BAJA SCM415H UNTUK APLIKASI POROS RODA BELAKANG MOBILThis research aims to evaluate the mechanical properties and microstructure of steel alloy SCM415H processed by friction welding for rear axle shaft application. Friction welding is a process to connect materials without using fillers and has a good quality of joint strength. Two different pressures of friction welding for 2.5 and 6 MPa were applied in this research. In addition, the initial condition of non-welded in SCM415H material was also investigated. In order to evaluate the mechanical properties, several mechanical tests i.e. Vickers hardness, tensile, torque and ultrasonic test were carried out. The result of this research is better welding connection is obtained on the final pressure of 6 MPa. The Vickers hardness is 390 HV was obtained on the welding connection area. Furthermore, the result proved that the higher pressure will affect the higher strength in the welding connection interface. The result of this research is confirmed the welding connection was not easily broken. Therefore, this research has an important role to determine the pressure applied to the friction welding.

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Section: Chemical Composition (Wt %)unclassified

Sifat Mekanis dan Struktur Mikro pada Sambungan Las Gesek Baja SCM415H untuk Aplikasi Poros Roda Belakang

Anggraini

Putra

2019

JRM

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“…In the area of processing, examples include die chill and deformation heating during conventional metalworking operations, rapid cooling during heat-treat quenching, heating and cooling transients during powder-bed additive manufacturing, interfacial frictional heating during solid-state joining processes, etc. [3][4][5][6][7][8][9][10][11] Thermal transients during service situations include frictional heating associated with the rubbing of rotating machine components, aerodynamic heating during high-speed flight, etc. [11][12][13][14] Despite the ubiquity of non-isothermal conditions, however, relatively-little work has been done to quantify plastic-flow behavior in such instances.…”

Section: Introductionmentioning

confidence: 99%

“…[3][4][5][6][7][8][9][10][11] Thermal transients during service situations include frictional heating associated with the rubbing of rotating machine components, aerodynamic heating during high-speed flight, etc. [11][12][13][14] Despite the ubiquity of non-isothermal conditions, however, relatively-little work has been done to quantify plastic-flow behavior in such instances.…”

Section: Introductionmentioning

confidence: 99%

The Constant-Stress, Constant-Heating-Rate Test: A Novel Method for Characterizing Transient Mechanical Behavior of Metallic Materials

Semiatin

Fagin

Levkulich

et al. 2021

Metall Mater Trans A

Self Cite

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A novel mechanical test for characterizing the transient, on-heating mechanical behavior of metallic structural materials was developed. It comprises the continuous heating of a specimen at a constant rate while loaded under a constant true stress. Key features of the approach consist of quantifying the thermal expansion (''thermal compliance'') and mechanical compliance of the load train, modeling the plastic flow and onset of localized necking of the test specimen, and the simulation of concurrent phase changes for multi-phase alloys. From such experiments and analyses, the instantaneous, true plastic strain and strain rate as a function of temperature can readily be determined and used to establish constitutive parameters (such as the apparent activation energy, Q app , for plastic flow) and temperatures at which rapid deformation may occur. The test technique was validated for three alloys, Ti-7Al, Ti-6Al-2Sn-4Zr-2Mo-0.1Si (Ti6242S), and superalloy 718. For the single-phase-a titanium alloy, Ti-7Al, semi-log plots of strain rate vs inverse temperature (ln _ e vs 1/T) were linear, and yielded a value of Q app comparable to that for self diffusion of hcp titanium. The corresponding plots for Ti6242S with either a fully equiaxed or duplex (equiaxed/colony a) microstructure were also linear, but exhibited higher values of Q app , a finding rationalized using simulations of the kinetics of dissolution of equiaxed a as a function of temperature and the so-called ''mechanical contribution'' to the activation energy of two-phase alloy systems. Last, ln _ e-vs-1/T plots of 718 were either linear (in the solution-treated condition) or approximately bilinear (in the solution-treated-and-aged condition). These observations were interpreted with the aid of simulations of precipitation and dissolution of c¢¢ and c¢ during continuous heating and the retarding effect on straining of a threshold (back) stress associated with the precipitates.

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“…Linear friction welding, in which joint can be formed through the combination of frictional heat and force, is also successfully applied to join ceramic reinforced composite materials for aerospace applications [17]. The new method was also developed in friction welding (inertia) to address the efficiency by torque load cell attached to the non-rotating workpiece, while the rotating part is determined from the deceleration rate of the flywheel [18]. Nanotechnology research is about to deposit nanolayer films on specimens to reduce defects during friction welding [19].…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Frictional Joining of AA6063 and AISI304L Dissimilar Metals and Characterisation of Bimetal Joints

Singh¹,

Yadav²,

Parihar³

et al. 2020

JNMES

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This study discusses the dissimilar joining between AA6063 aluminium and AISI304L stainless steel of flat faying surfaces through a rotary friction welding process at different welding conditions as per L9 orthogonal array and the characterization of bimetal joints. The effect of welding parameters on the mechanical properties and the minimum level of welding conditions required for the metals joining were discussed. Bonding between the metals and the narrow heat-affected zone were observed from microscopy study. Energy dispersive x-ray analysis revealed the elements present at the weld interface and molybdenum formation. Fractography result on the tested specimens showed the dimple rupture during the fracture. The tensile test showed the plastic deformation near the weld joint for friction pressure 15 MPa and above. The maximum peak load and elongation of joint were around 12 kN and 12% respectively. 18 MPa friction pressure, 24 MPa upset pressure and 5 sec. friction time showed good bond strength and the maximum tensile strength of 189 MPa with 92 % of joint efficiency. Axial shortening was obtained in the range of 13-27 mm and a maximum of 26.9 mm during experiments. In joints, microhardness was decreasing towards AISI304L base metal from weld interface and conversely increasing towards AA6063 base metal. Impact tests showed the conversion of brittle into ductile fractures when increasing friction pressure and maximum impact energy observed was 38 Joule.

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Transient behaviour of torque and process efficiency during inertia friction welding

Cited by 12 publications

References 13 publications

Sifat Mekanis dan Struktur Mikro pada Sambungan Las Gesek Baja SCM415H untuk Aplikasi Poros Roda Belakang

Sifat Mekanis dan Struktur Mikro pada Sambungan Las Gesek Baja SCM415H untuk Aplikasi Poros Roda Belakang

The Constant-Stress, Constant-Heating-Rate Test: A Novel Method for Characterizing Transient Mechanical Behavior of Metallic Materials

Eco-Friendly Frictional Joining of AA6063 and AISI304L Dissimilar Metals and Characterisation of Bimetal Joints

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