Influence of Filler on the Microstructure, Mechanical Properties and Residual Stresses in TIG Weldments of Dissimilar Titanium Alloys

Junaid, Massab; Khan, Fahd Nawaz; Shahbaz, Tauheed; saleem, Haris; Haider, Julfikar

doi:10.1007/s40195-021-01236-y

Cited by 4 publications

(3 citation statements)

References 45 publications

(48 reference statements)

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“…The assessment of mechanical behavior of these weld joints under different loading conditions and environment has always been the prime focus of the research intended for different industries such as process plants, power plants, aerospace and automobile sectors. [1][2][3][4] Different characterization techniques such as residual stresses measurement, 5 hardness profile, 6 single-notch, double notch and smooth tensile testing, 7 impact toughness, 8 low cycle fatigue testing 9 etc are used to assess the mechanical behavior of weldments. These tests primarily indicate the time-independent strength of the specimens due to which the creep performance of the welded joints are important to assess as they represent the timedependent mechanical behavior of fabricated components.…”

Section: Introductionmentioning

confidence: 99%

“…Different characterization techniques such as residual stresses measurement, 5 hardness profile, 6 single-notch, double notch and smooth tensile testing, 7 impact toughness, 8 low cycle fatigue testing 9 etc are used to assess the mechanical behavior of weldments. These tests primarily indicate the time-independent strength of the specimens due to which the creep performance of the welded joints are important to assess as they represent the time-dependent mechanical behavior of fabricated components.…”

Section: Introductionmentioning

confidence: 99%

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Indentation creep behavior of pulsed Tungsten inert gas welded Ti-5Al-2.5Sn alloy joints by nanoindentation and atomic force microscopy

Hassaan

Junaid

Shamir

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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Indentation creep was used to analyze the heterogeneity of the mechanical properties in base metal, heat affected zone and fusion zone of titanium alloy weldments obtained using TIG welding process which is generally employed in aerospace industries. For all the weld zones, creep deformation was analyzed using nanoindenter, AFM and microhardness testing. Nanoindentation creep depth was plotted with respect to time using data from the hold stage and CSRs were calculated using empirical relations. The analysis of creep stress exponents (CSE) was indicative of an active creep mechanism for all the weld zones however, a notable variation between the stress exponents and creep mechanism was observed among base metal, heat affected zone and fusion zone. Moreover, Vickers microindentation was used to measure creep of Ti-5Al-2.5Sn alloy weldment using Sargent-Ashby model. However, it did not give the realistic values creep behavior when compared to literature and nanoindentation measurements. It was observed that the phase change, grain size and the loading strain rate (LSR) significantly affected the creep behavior of the Ti-5Al-2.5Sn weldment.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Indentation creep behavior of pulsed Tungsten inert gas welded Ti-5Al-2.5Sn alloy joints by nanoindentation and atomic force microscopy

Hassaan

Junaid

Shamir

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…6–9 The use of tungsten inert gas (TIG) welding for autogenous welding of titanium or nickel-based alloys is extensively reported in the literature. 10–16 In the TIG welding process, a nonconsumable tungsten electrode is used to generate an electric arc between the electrode tip and workpiece material. To protect the welded metal from atmospheric contamination, a shielding gas such as argon or helium is used which also provides a medium for the transport of electrons from the electrode to the workpiece material.…”

Section: Introductionmentioning

confidence: 99%

Dissimilar tungsten inert gas welding between Inconel 718 and commercially pure titanium using a vanadium interlayer

Shehbaz

Junaid

Khan

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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A weight reduction of aero engines, in order to enhance their efficiency would be possible if the commercially pure titanium in the low-temperature region of the compressor could be welded with Inconel in the high-temperature portion. This joining of titanium/Inconel is challenging owing to the formation of hard TixNiy intermetallic compounds, the suppression of which is not possible using the conventional weld process optimization approach. In recent years, a number of approaches have been developed to reduce or eliminate these intermetallic compounds during welding and one approach is the use of an interlayer during the welding operation. The insertion of a V interlayer at the root side remarkably suppressed Ti and Ni diffusion across the interlayer. NiV3 and (Ti, V) solid solutions were present in the interfacial microstructure of V/Inconel 718 and V/commercially pure titanium, respectively, as characterized by scanning electron microscope and X-ray diffraction. The tensile strength of the weldment was 190 MPa (approx. 59% of the commercially pure titanium base metal) with an elastic modulus comparable with that of the base alloys. The joint exhibited brittle fracture at the Inconel 718 side near the V/Inconel 718 interface due to intermetallic compounds.

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Performance analysis on welded joints made of TC4/TA17 dissimilar titanium alloys

Wang,

Sun,

Liu

et al. 2024

Ocean Engineering

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Influence of Filler on the Microstructure, Mechanical Properties and Residual Stresses in TIG Weldments of Dissimilar Titanium Alloys

Abstract: https://orcid.org/0000-0001-7010-8285 (2021) Influence of filler on the microstructure, mechanical properties and residual stresses in TIG weldments of dissimilar titanium alloys. Acta Metallurgica Sinica (English Letters).

Cited by 4 publications

References 45 publications

Indentation creep behavior of pulsed Tungsten inert gas welded Ti-5Al-2.5Sn alloy joints by nanoindentation and atomic force microscopy

Indentation creep behavior of pulsed Tungsten inert gas welded Ti-5Al-2.5Sn alloy joints by nanoindentation and atomic force microscopy

Dissimilar tungsten inert gas welding between Inconel 718 and commercially pure titanium using a vanadium interlayer

Performance analysis on welded joints made of TC4/TA17 dissimilar titanium alloys

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