Friction stir welding of steels

Fujii, Hidetoshi

doi:10.1080/09507111003655358

Cited by 13 publications

(8 citation statements)

References 48 publications

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“…Revolution pitch is linear spacing formed during one revolution [26]. In constant rotation speed, revolution pitch increases when the welding speed increases.…”

Section: Microstructural Evolution During Fswmentioning

confidence: 99%

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Microstructure and mechanical properties of friction stir welded lean duplex stainless steel

Esmailzadeh

Shamanian

Kermanpur

et al. 2013

Materials Science and Engineering: A

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“…Revolution pitch is linear spacing formed during one revolution [26]. In constant rotation speed, revolution pitch increases when the welding speed increases.…”

Section: Microstructural Evolution During Fswmentioning

confidence: 99%

“…These micrographs indicate that the phase size is decreased by increasing the welding speed. Regarding to previous studies, revolution pitch is one important index to understand different heat input under various welding conditions [26].…”

Section: Microstructural Evolution During Fswmentioning

confidence: 99%

Microstructure and mechanical properties of friction stir welded lean duplex stainless steel

Esmailzadeh

Shamanian

Kermanpur

et al. 2013

Materials Science and Engineering: A

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“…The trend is analogous: compared to fusion welding, peak temperatures are lower and the heat-affected zone (HAZ) is smaller. The grain size in the processed zone is smaller and, absent critical defects, the strength increases [15,16]. In addition, complex phase transformations can occur [17] and mechanical properties can be improved compared to some base materials (BMs) [18,19].…”

Section: Introductionmentioning

confidence: 96%

Microstructure and fatigue properties of friction stir welded high-strength steel plates

Sorger

Lehtimäki

Hurme

et al. 2018

Science and Technology of Welding and Joining

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The weldability of high-strength steels (HSSs) is limited by their loss of strength, toughness and fatigue properties. In demanding applications, the fatigue properties of welds are among the strictest requirements. This paper presents a weldability analysis focusing on the microstructure and fatigue properties of 6 mm thick S690 and S355 HSS plates joined by friction stir welding. Their fatigue properties are compared to design recommendations and to fatigue properties obtained with other welding techniques. Results show that the high-quality friction stir welded steel joints outperform high-quality arc welds and FAT80 design recommendations. The fatigue strength of the friction stir welded joints is increased with material yield strength. The mechanisms governing crack initiation at different maximum stress levels are discussed. ARTICLE HISTORY

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“…In particular, this technique can be used as one of few methods for joining metals that are hard to weld or have physicochemical properties significantly different from each other, i.e., in cases when the use of conventional fusion welding is strongly limited and braze welding does not yield sufficient joint strength [2]. For this reason, FSW is commonly used not only for welding aluminium alloys [3,4] but also for many other metallic materials such as magnesium alloys [1,[5][6][7], titanium alloys [1,8], steel [9,10], copper [11][12][13][14][15][16], and different combinations of dissimilar metals [1].…”

Section: Introductionmentioning

confidence: 99%

Effect of FSW Traverse Speed on Mechanical Properties of Copper Plate Joints

et al. 2020

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The paper describes the influence of the friction stir welding travel speed on the mechanical properties of the butt joints of copper plates. The results of static and fatigue tests of the base material (Cu-ETP R220) and welded specimens produced at various travel speeds were compared, considering a loading applied both parallel and perpendicularly to the rolling direction of the plates. The mechanical properties of the FSW joints were evaluated with respect to parameters of plates’ material in the delivery state and after recrystallisation annealing. The strength parameters of friction stir welding joints were compared with the data on tungsten inert gas welded joints of copper plates available in the literature. The results of microhardness tests and fractographic analysis of tested joints are also presented. Based on the above test results, it was shown that although in the whole range of considered traverse speeds (from 40 to 80 mm/min), comparable properties were obtained for FSW copper joints in terms of their visual and microstructural evaluation, their static and especially fatigue parameters were different, most apparent in the nine-fold greater observed average fatigue life. The fatigue tests turned out to be more sensitive criteria for evaluation of the FSW joints’ qualities.

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Friction stir welding of steels

Cited by 13 publications

References 48 publications

Microstructure and mechanical properties of friction stir welded lean duplex stainless steel

Microstructure and mechanical properties of friction stir welded lean duplex stainless steel

Microstructure and fatigue properties of friction stir welded high-strength steel plates

Effect of FSW Traverse Speed on Mechanical Properties of Copper Plate Joints

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