Some studies on mechanical properties and microstructural characterization of automated TIG welding of thin commercially pure titanium sheets

Karpagaraj, A.; Shanmugam, N. Siva; Sankaranarayanasamy, K.

doi:10.1016/j.msea.2015.05.056

Cited by 90 publications

(55 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Welding characteristics of CP Ti have been reported by various authors. Karpagaraj et al [3] performed GTAW on CP Ti sheets with a thickness of 1.6 and 2 mm containing equiaxed alpha phase grains with the presence of fine and disperse precipitation of beta phase. They pointed out that the interface between the BM and the HAZ where the thermal cycles occurred during the welding process.…”

Section: Unalloyed Titanium -Commercially Pure Titanium (Cp Ti)mentioning

confidence: 99%

“…Note that all the tensile samples fractured at the weld area. Mitchell et al [7] conducted electron beam welding on a 1.6 mm thick CP Ti and found the hardness to be comparable between the weld zones (HAZ and FZ) and the BM (Figure 2 [2][3][4][5][6][7]. In the HAZ, the degree of grain coarsening increases as one moves towards the centre of the FZ.…”

Section: Unalloyed Titanium -Commercially Pure Titanium (Cp Ti)mentioning

confidence: 99%

See 1 more Smart Citation

Welding of titanium alloys

et al. 2017

View full text Add to dashboard Cite

Abstract. This article briefly summarises previous reports as well as some recent results on welding of various titanium alloys. Titanium is available in a wide range, hence, their properties and characteristics (including welding characteristics) may also varied significantly. The alloys studied represented three major areas; they are (1): unalloyed or commercially pure titanium (CP Ti), (2): near α and α+β alloys, and (3): β alloys. From our preliminary results, it can be reported that the structure of fusion zone (FZ) and heat affected zone (HAZ) of alloys from area (1) may change but their hardness remained, arguably, the same as the as-received material. Alloys from area (2) showed an increase in hardness in the FZ and HAZ areas due to the formation of α-prime or martensite, while alloys from area (3) experienced a reduction in hardness associated with dissolution of α phase leaving only retained β in the FZ. Further investigations are required to confirm these findings. Such information are very useful so that appropriate post welding heat treatment (PWHT) can be applied to improve their properties and performance.

show abstract

Section: Unalloyed Titanium -Commercially Pure Titanium (Cp Ti)mentioning

confidence: 99%

Section: Unalloyed Titanium -Commercially Pure Titanium (Cp Ti)mentioning

confidence: 99%

Welding of titanium alloys

et al. 2017

View full text Add to dashboard Cite

show abstract

“…They have several benefits which includes consistency in quality welds, greater repeatability and lowered production costs, fewer scrapped parts, increases return on investment and faster speed per cycle. karpagaraj et al 10) used automatic setup for welding titanium alloy in which torch movement is automated using single axis mechanism. Tadayuki suggested to have built the automatic setup built having torch position specifically kept at 40° to yield good results 11) .…”

Section: Automation In Pulse Tig Welding Machinesmentioning

confidence: 99%

Pulse TIG welding: Process, Automation and Control

Baghel

Nagesh

2017

Journal of Welding and Joining

View full text Add to dashboard Cite

Pulse TIG (Tungsten Inert Gas) welding is often considered the most difficult of all the welding processes commonly used in industry. Because the welder must maintain a short arc length, great care and skill are required to prevent contact between the electrode and the workpiece. Pulse TIG welding is most commonly used to weld thin sections of stainless steel, non-ferrous metals such as aluminum, magnesium and copper alloys. It is significantly slower than most other welding techniques and comparatively more complex and difficult to master as it requires greater welder dexterity than MIG or stick welding. The problems associated with manual TIG welding includes undercutting, tungsten inclusions, porosity, Heat affected zone cracks and also the adverse effect on health of welding gun operator due to amount of tungsten fumes produced during the welding process. This brings the necessity of automation. Hence, In this paper an attempt has been made to build a customerized setup of Pulse TIG welding based on through review of Pulse TIG welding parameters. The cost associated for making automated TIG is found to be low as compared to SPM (Special Purpose machines) available in the market.

show abstract

“…Heat is generated from the arc and it is helped to melt the metal/ llers to make perpetual joint. This welding process can cover a wide range of metals like ferrous and non-ferrous (including superalloys) [1][2][3]. GTAW process have the ability to handle thin sheets (1 mm) to thick plates (12 mm) [4][5].…”

Section: Introductionmentioning

confidence: 99%

The Role of Goldack Double Ellipsoidal Parameters in Temperature Distribution for the GTAW Process

Karpagaraj¹,

Suresh²,

Thamizhmanii³

et al. 2020

Preprint

View full text Add to dashboard Cite

Numerical simulation is widely used in all the fields of engineering to predict the results. In welding, various finite element tools are used to predict the bead profile, temperature distribution, joint strength, formability and metallurgical changes etc. With respect to the welding process suitable heat source model has to be assigned for numerical simulation. The most suitable heat source for Gas Tungsten Arc Welding (GTAW) process is the Goldack double ellipsoidal model. This model has few parameters like the width of the weld (a), depth of penetration (b), front profile ellipse (Cf) and rear ellipse profile (Cr). In this research article, the influence of these parameters and their effect on the temperature distribution is focused. For this purpose, based on the full factorial design welding simulations are performed with COMSOL. Later, the grey relational technique was used to find the contribution of these parameters. It was concluded from the full factorial method that; temperature variation is depended on the GTAW welding heat source parameters. At 95% confidence level, the width of the weld showed a major role in controlling the temperature. Moreover, the optimum combination of process variables obtained end with minimum temperature rise at a width of 0.7 mm, depth of 5.7 mm and frontal factor of 4.

show abstract

Some studies on mechanical properties and microstructural characterization of automated TIG welding of thin commercially pure titanium sheets

Cited by 90 publications

References 10 publications

Welding of titanium alloys

Welding of titanium alloys

Pulse TIG welding: Process, Automation and Control

The Role of Goldack Double Ellipsoidal Parameters in Temperature Distribution for the GTAW Process

Contact Info

Product

Resources

About