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Friction taper stitch welding of a duplex stainless steel

Scientific Reports, ISSN: 2045-2322, Vol: 13, Issue: 1, Page: 21354
2023
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Most Recent News

Federal Institute of Rio Grande do Sul Reports Findings in Science (Friction taper stitch welding of a duplex stainless steel)

2023 DEC 15 (NewsRx) -- By a News Reporter-Staff News Editor at Chemicals & Chemistry Daily Daily -- New research on Science is the subject

Article Description

Friction taper stitch welding (FTSW) is a novel technique that uses multiple inserts to conceal surface crack in a given substrate. The inserts are rotated and forced to fill the crack as plasticized material, and forge with the substrate in solid-state. The process is well suited for alloys such as duplex stainless steel, which suffers degradation of properties during fusion welding. A detailed experimental and theoretical investigation is presented here on FTSW of a duplex stainless steel (DSS). The experimental results show the presence of a ferrite-rich phase along the interface. The results computed by the numerical process model reveal a direct influence of thermal cycle in the amount of ferrite along the joint interface. The welded joint shows near homogeneous structure and properties similar to those of the substrate.

Bibliographic Details

Rapaka, Ram; de Lima Lessa, Cleber Rodrigo; Vieira Braga Lemos, Guilherme; Pacheco Figueiredo, Arlan; Vicharapu, Buchibabu; Clarke, Thomas; De, Amitava

Springer Science and Business Media LLC

Multidisciplinary

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