Role of zinc coat in friction stir lap welding Al and zinc coated steel
TL;DR: In this paper, the role of Zn coat on friction stir lap welding of Al alloy and Zn coated steel was investigated and shown to improve the weldability of Al and steel.
Abstract: AC4C cast Al alloy and Zn coated steel were successfully lap welded using friction stir welding technology. Full strength joints could be obtained and the joints fractured at Zn coated steel base metal side, while Al alloy and unzinced steel could not be welded in the same welding conditions. The joining mechanism and the role of Zn coat on friction stir lap welding of Al alloy and Zn coated steel were put forward. The intervention of Zn coat promoted the formation of Al–Zn low melting point eutectic structure at the interface, which significantly improved the weldability of Al and steel.
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TL;DR: In this article, the welding nugget can be considered as aluminum matrix composite, which is enhanced by dispersed sheared-off steel fragments encompassed by a thin inter-metallic layer or simply intermetallic particles.
243 citations
Cites background from "Role of zinc coat in friction stir ..."
...[20] suggested the Zn coating on steel could improve the weldability of Al and steel through promoting the formation of Al–Zn low melting point eutectic structure....
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TL;DR: In this article, the cold metal transfer (CMT) welding-brazing process provides a potential method to join dissimilar metals, and it is feasible to join aluminum alloys-to-galvanized mild steel using CMT.
174 citations
TL;DR: In this article, the authors focused on friction stir welding (FSW) of dissimilar aluminum alloys and steels, an area that is getting great concern recently and identified the opportunities and challenges for the future.
Abstract: The present paper is focused on friction stir welding (FSW) of dissimilar aluminum alloys and steels, an area that is getting great concern recently The promise of FSW joints lies in low welding heat input and its ability to minimize the extent of the formation of intermetallic compound (IMC) in dissimilar metals The present paper assessed the status of FSW process of dissimilar aluminum alloys and steels, and to identify the opportunities and challenges for the future The essential reason for the formation of the dissimilar Al/steel FSW joints with high quality is explained by super diffusion behavior This paper will provide basis to designers and engineers to consider FSW for a wider range of dissimilar aluminum alloys and steels
109 citations
TL;DR: In this article, a 10kW fiber laser welding system with ER4043 filler metal was used to join aluminum alloy to steel by butt joints when zinc layer was hot-dip galvanized at the steel's groove face in advance.
105 citations
TL;DR: In this article, the effects of welding speed, laser power, number of the welding passes and type of shielding gas in gap-free welding of Zn-coated steel on Al alloy were investigated using a 1-kW single mode continuous wave fibre laser.
97 citations
Cites background from "Role of zinc coat in friction stir ..."
...The main issues in laser welding of Zn-coated steel on Al alloy are the formation of porosity, spatter and intermetallic brittle phases [22,23]....
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Book•
01 Jan 1986
TL;DR: Binary Alloy Phase Diagrams, Second Edition, Plus Updates, on CD-ROM offers you the same high-quality, reliable data you'll find in the 3-volume print set published by ASM in 1990.
Abstract: Gives you access to the 4,700 atomic and weight percent graphs included in the reference set Binary Alloy Phase Diagrams, Second Edition, published by ASM in 1990 - plus updates! All the data from the 3,600-page, three-volume set, abstracts of phase diagram evaluations for 3,000 binary alloy systems, special points and crystal structure tables, along with 300 recent updates from the current literature are included on one CD-ROM for ease of use and storage. Binary Alloy Phase Diagrams plus updates on CD-ROM containing all the data from Massalski's world standard, three-volume, 3,600-page Binary Alloy Phase Diagrams, Second Edition, fits in the palm of your hand! This CD includes 4,700 diagrams; abstracts of phase diagram evaluations for 3,000 binary alloy systems; special points; crystal structure tables; plus 300 recent updates from current literature. All in databases and in CD-ROM format, so it's easier to access, more flexible to use, and more efficient for you to store than ever before. Binary Alloy Phase Diagrams, Second Edition, Plus Updates, on CD-ROM, offers you the same high-quality, reliable data you'll find in the 3-volume print set published by ASM in 1990. The over 4,700 diagrams were digitized from original program graphs or redrawn from carefully selected data sources. Each diagram is in accordance to thermodynamic principles and is consistent with melting and phase-transition temperatures of the pure elements. All diagrams met strict quality standards throughout preparation. Now, the CD-ROM format puts this quality information at your fingertips. These are not scanned pages, but true, complete databases of phase diagram and crystallographic information, all in one incredibly small but powerful package, you'll wonder what you ever did without it! This new electronic format allows you to: Search for diagrams, crystal structure data, or text by keying in the alloys. Search the Master Crystal Structure Table for Intermetallic compounds with equivalent structure type, temperature, and phase width criteria. Print diagrams, text, crystal structure. Examine any new data in conjunction with the original data as presented in the print volume. Zoom in on a complicated section of the diagram for a closer look. (Vat payable on UK orders for CD products) Multi-User prices available: Contact Steve French (Customer Services Manager) Telephone: +44 (0)1462 437933; E-Mail: SFrench@ameritech.co.uk
13,433 citations
TL;DR: In this article, a review of the metallurgy of zinc-coated steel from a scientific standpoint to develop relationships to practical applications is presented. And the effect of the microstructures of these coatings on the important properties of corrosion, formability, weldability and paintability is discussed.
1,194 citations
TL;DR: The microstructural distribution associated with a hardness profile in a friction-stir-welded, age-hardenable 6063 aluminum alloy has been characterized by transmission electron microscopy and orientation imaging microscopy as mentioned in this paper.
Abstract: The microstructural distribution associated with a hardness profile in a friction-stir-welded, age-hardenable 6063 aluminum alloy has been characterized by transmission electron microscopy (TEM) and orientation imaging microscopy (OIM). The friction-stir process produces a softened region in the 6063 Al weld. Frictional heating and plastic flow during friction-stir welding create fine recrystallized grains in the weld zone and recovered grains in the thermomechanically affected zone. The hardness profile depends greatly on the precipitate distribution and only slightly on the grain size. The softened region is characterized by dissolution and growth of the precipitates during the welding. Simulated weld thermal cycles with different peak temperatures have shown that the precipitates are dissolved at temperatures higher than 675 K and that the density of the strengthening precipitate was reduced by thermal cycles lower than 675 K. A comparison between the thermal cycles and isothermal aging has suggested precipitation sequences in the softened region during friction-stir welding.
629 citations
TL;DR: In this article, the authors tried to butt-weld an aluminum alloy plate to a mild steel plate by friction stir welding, and investigated the effects of a pin rotation speed, the position for the pin axis to be inserted on the tensile strength and the microstructure of the joint.
391 citations
TL;DR: In this article, the joining of dissimilar Al 6013-T4 alloy and X5CrNi18-10 stainless steel was carried out using friction stir welding (FSR) technique.
389 citations