Friction stir welding of AISI 304 austenitic stainless steel

Meran, Cemal; Kovan, Volkan; Alptekin, Artunç

doi:10.1002/mawe.200700214

Cited by 47 publications

(28 citation statements)

References 8 publications

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“…The tensile strength of the welds increased when tilt angle was changed from 0 o to 2 o . C. Meran et al [28] reported that the angle of 0 o caused a serious problem in the weld areas. Small increment on the tilt angle to 2 o helped to increase the joint strength.…”

Section: Figure 4: Effect Of Process Parameters On Uts: (A) Effect Ofmentioning

confidence: 99%

Mechanical Properties and Microstructure of Dissimilar Friction Stir Welding of Pure Aluminum to Low Carbon Steel

et al. 2018

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The purpose of this research is to use friction stir welding (FSW) to join dissimilar metals, annealed low carbon steel and A1050 pure aluminum. A butt joint with a similar sheet thickness of 1.9 mm was applied. The novelties of the research are relatively using high generated heat produced by a combination of low traverse speed and high rotational speed to perform the dissimilar joints and using a tool material (K107cold work tool steel) which has not been used in FSW with tool cooling. The present work studied the effect of FSW variables such as tilt angle, tool cooling, base metal location on mechanical properties. Tensile tests were used to evaluate the mechanical properties of the dissimilar joints. The microstructure specimens were examined using a scanning electron microscope (SEM). Sound dissimilar joints were successfully produced. The maximum joint efficiency obtained in this study is 51.7% of the aluminum tensile strength. The microstructure images showed that many steel fragments were sheared off from the steel surface by the tool action and scattered in the weld nugget, a continuous intermetallic compound (IMC) layer formed at the interface, the thickness of the IMC layer at the interface decreased in the thickness direction of the weld. FeAl3 IMC phase was only observed at the interface.

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Section: Figure 4: Effect Of Process Parameters On Uts: (A) Effect Ofmentioning

confidence: 99%

Mechanical Properties and Microstructure of Dissimilar Friction Stir Welding of Pure Aluminum to Low Carbon Steel

et al. 2018

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“…The fine grain structure increased the hardness and tensile strength in the stir zone [10]. Microstructure and mechanical properties of 304 stainless steel welds made by friction stir welding were evaluated by Meran and Kovan [11]. Higher strength of welding was observed when travel speed is 63mm/min and rotational speed is 1000 rpm.…”

Section: Fig 2:-microstructural Regions Of Friction Stir Welding (Mamentioning

confidence: 99%

“…Higher strength of welding was observed when travel speed is 63mm/min and rotational speed is 1000 rpm. Friction Stir Welding (FSW) was applied to AISI 304 austenitic stainless steels and the effect of different tool rotational speeds, traverse speeds, compressive tool forces, and tool angles was investigated by C.Meran et.al [12]. It is found that the maximum tensile strength is observed with 950 rpm rotational speeds and 60 mm/min traverse speed, 9 kN compressive tool force, and 1.5 0 tool tilt angle [ Fig.3].…”

Section: Fig 2:-microstructural Regions Of Friction Stir Welding (Mamentioning

confidence: 99%

“…They reported that no sigma phase is found in stir zone and HAZ. A study C.Meran et.al [26] has been taken up to compare the microstructures of AISI 430 ferritic stainless steels resulted by friction stir welding and fusion welding (MIG and TIG) methods. It is found the formation of σ-phase has not been reported in friction stir welding processes when compared to traditional fusion welding processes.…”

Section: Ferritic Stainless Steel:-mentioning

confidence: 99%

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Friction Stir Welding of Stainless Steels – Review.

Rajasekhar¹

2016

IJAR

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After development of tungsten alloys and polycrystalline cubic boron nitride (PCBN) tools, lot of progress is made in FSW of stainless steel. Although some issues remain to be solved, satisfactory welds are produced and weld properties are found suitable for the intended applications. This paper summarizes the progress of research work on Friction stir welding of different types of stainless steels. It covers the research made in the selection of suitable tool materials, optimizing the process parameters such as tool travel speed, rotational speed, tilt angle etc. The influence of Friction stir welding on microstructure and mechanical properties of welds has also been reviewed. Fusion welding involves use of filler materials, shielding gases, and development of high energy density which results wider heat affected zone. The weldments show appreciable modification in the microstructure and properties of weld and heat affected zones, which may result solidification defects like distortion, , lack of penetration, poor fusion, cracks etc. Use of plasma arc and laser beam welding techniques can produce sound welds of thicker materials with narrow heat affected zone [2], however these techniques are not suitable for certain materials such as aluminium, magnesium etc.The drawbacks in the fusion welding techniques can some extent addressed by solid state welding techniques (e.g. resistance welding, friction welding) in which welding takes place at a temperature lower than the melting point of base metals and also no filler material and / or shielding gases are required. In resistance welding coalescence occurs due to heat generated by contact resistance and applied pressure and hence, it is not suitable for materials having high electrical conductivity (e.g. aluminium, copper). Friction welding employs frictional heat generated when a moving workpiece and a fixed component are forced together in order to obtain the required heat and temperature for weld. However, the application of friction welding is limited by the geometry of the workpieces to be joined.The above difficulties can successfully overcome by friction stir welding (FSW), a solid state welding process which was developed by the welding institute (TWI) [3] primarily for welding of aluminium and magnesium based alloys. The major advantages of FSW over other welding processes are lower distortion, good dimensional stability, absence of cracking etc.

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“…Meran and Kovan [5] studied the microstructural features of 304 stainless steel welded plates.. Welding was performed on 11 KW vertical milling machine on 2.5 mm plate. The tool used was tungsten-based alloy they found out that tungsten carbide tool yielded good results.…”

Section: Friction Stir Welding Of Stainless Steel 304: a Surveymentioning

confidence: 99%

Friction Stir Welding of Stainless Steel 304: A Survey

Baghel¹

2012

IOSRJMCE

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Friction stir welding of AISI 304 austenitic stainless steel

Cited by 47 publications

References 8 publications

Mechanical Properties and Microstructure of Dissimilar Friction Stir Welding of Pure Aluminum to Low Carbon Steel

Mechanical Properties and Microstructure of Dissimilar Friction Stir Welding of Pure Aluminum to Low Carbon Steel

Friction Stir Welding of Stainless Steels – Review.

Friction Stir Welding of Stainless Steel 304: A Survey

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