Orbital TIG Welding of Titanium Tubes with Perforated Bottom Made of Titanium-Clad Steel

Górka, Jacek; Przybyła, M.; Szmul, Marcin; Chudzio, Andrzej; Ładak, Dariusz

doi:10.2478/adms-2019-0017

Cited by 20 publications

(17 citation statements)

References 19 publications

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“…In the earth’s crust it occurs in the form of minerals such as titanite, anatase, ilmenite, brookite, perovskite and rutile, with a content of only 0.61% (the ninth most abundant element) [ 1 ]. The pure metal and its alloys have a wide range of applications in many areas, inter alia: biomedical, chemical, offshore, transportation (aviation and automotive), energy and recreation [ 2 , 3 , 4 , 5 ]. Titanium is completely resistant to moist hydrochloric acid, nitric acid, chlorine compounds, sulfides, sulfur, ammonia and hydrogen peroxide.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Residual Stress Measurements of Grade IV Titanium and Ti-6Al-4V and Ti-13Nb-13Zr Titanium Alloys after Laser Treatment

Jażdżewska

Kwidzińska

Seyda³

et al. 2021

Materials

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Nowadays, surface engineering focuses on research into materials for medical applications. Titanium and its alloys are prominent, especially Ti-6Al-4V and Ti-13Nb-13Zr. Samples made of pure grade IV titanium and the titanium alloys Ti-6Al-4V and Ti-13Nb-13Zr were modified via laser treatment with laser beam frequency f = 25 Hz and laser beam power P = 1000 W during a laser pulse with duration t = 1 ms. Subsequently, to analyze the properties of the obtained surface layers, the following tests were performed: scanning electron microscopy, chemical and phase composition analysis, wetting angle tests and roughness tests. The assessment of the impact of the laser modification on the internal stresses of the investigated materials was carried out by comparing the values of the stresses of the laser-modified samples to those of the reference samples. The obtained results showed increased values of tensile stresses after laser modification: the highest value was found for the Ti-6Al-4V alloy at 6.7434 GPa and the lowest for pure grade IV titanium at 3.742 GPa. After laser and heat treatment, a reduction in the stress was observed, together with a significant increase in the hardness of the tested materials, with the highest value for Ti-6Al-4V alloy at 27.723 GPa. This can provide better abrasion resistance and lower long-term toxicity, both of which are desirable when using Ti-6Al-4V and Ti-13Nb-13Zr alloys for implant materials.

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Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Residual Stress Measurements of Grade IV Titanium and Ti-6Al-4V and Ti-13Nb-13Zr Titanium Alloys after Laser Treatment

Jażdżewska

Kwidzińska

Seyda³

et al. 2021

Materials

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“…Earlier studies [27] conducted by the Authors showed that in order to ensure the quality of the connection of titanium pipes with the perforated bottom, it is necessary to constantly control the welding process. During the industrial process, there may be defects associated with inadequate shielding of the protective gas, incorrect positioning of the tungsten electrode (on too large or small track circumference), too high speed of electrode movement resulting from an incorrectly set welding program, as well as too high current during welding.…”

Section: Discussionmentioning

confidence: 99%

Qualifying the TIG orbital welding technology of titanium pipes with a perforated bottom

Górka

Przybyła²,

Chudzio³

et al. 2020

Weld. Tech. Rev.

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The article presents the method of qualifying orbital welding technology using the TIG (142) method of the perforated bottom heat exchanger made of steel A516M (Grade 485) explosively clad with titanium B265 (Grade 1) with titanium pipes B338 (Grade 2) with a diameter of 34.93 mm and thickness 0.7 mm. Based on preliminary tests, welding technologies have been developed that meet the acceptance criteria for acceptance requirements. Qualification of the developed technology and welding parameters that were used during welding was carried out in accordance with PN-EN ISO 15614 Specification and qualification of metal welding technology, welding technology testing, Part 8: Welding of tubes with perforated bottom. This standard specifies the requirements for the qualification of automatic arc welding technology, metal pipe joints with perforated bottom by means of technology testing.

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“…After an experiment of welding of 304L austenitic stainless steel/Incoloy 800HT nickel alloy, it was found that the joint had good mechanical and microstructural attributes as compared with the base metal parts [24]. The orbital TIG welded titanium tubes with bottom made up of Ti-clad steel showed a satisfactory result when tested under non-destructive and macrographic tests [25]. The hydroxyapatite coating was performed on laser modified Ti13Nb13Zr alloy by using electrophoretic deposition.…”

Section: Introductionmentioning

confidence: 99%

Preliminary Investigations of Structure and Properties of TIG Welded Ti-6Al-4V Alloy

Dewangan¹,

Ranjan²,

Chattopadhyaya³

et al. 2021

Adv. Sci. Technol. Res. J.

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The titanium (Ti) and its alloys are taken into interest for commercial purpose due to its low density, high yield strength and high corrosion resistance properties. The present work deals with microstructural observation and mechanical property analysis of tungsten inert gas (TIG) welded Ti-6Al-4V alloy joints. For the purpose, two different set of plates were welded at same current and voltage, i.e., 190 A and 24 V, by the TIG welding technique. A critical analysis of the microstructure and mechanical properties like tensile strength and hardness of the welded Ti-6Al-4V plates was carried out in this work. It was found that both plates showed different behavior during the tension test. Plate 1 had 464.54 MPa of tensile stress and it broke at the welded joint. Plate 2 was unaffected at the welded zone but was broken at the base metal zone. The second plate had tensile strength of 501.83 MPa. According to the hardness test, both the welded plates possessed the highest hardness at the welded zone. However, plate 2 showed approximately 10% higher hardness than that of plate 2. A proper interrelationship was observed between the mechanical behavior and microstructural appearance. The microscopic view of the welded joints revealed the presence of α, β and martensitic-α phases.

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Orbital TIG Welding of Titanium Tubes with Perforated Bottom Made of Titanium-Clad Steel

Cited by 20 publications

References 19 publications

Mechanical Properties and Residual Stress Measurements of Grade IV Titanium and Ti-6Al-4V and Ti-13Nb-13Zr Titanium Alloys after Laser Treatment

Mechanical Properties and Residual Stress Measurements of Grade IV Titanium and Ti-6Al-4V and Ti-13Nb-13Zr Titanium Alloys after Laser Treatment

Qualifying the TIG orbital welding technology of titanium pipes with a perforated bottom

Preliminary Investigations of Structure and Properties of TIG Welded Ti-6Al-4V Alloy

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