Microstructural evolution and properties of tungsten inert gas and fiber laser welded SUS445 ferritic stainless steel

Autor:	Ching-Wen Lu, Huei-Sen Wang, Chih-Chun Hsieh, Jie-Jyun Wu
Rok vydání:	2021
Předmět:	Microstructural evolution Materials science Metallurgy Metals and Alloys chemistry.chemical_element Welding Tungsten Condensed Matter Physics Microstructure Corrosion law.invention chemistry law Fiber laser Materials Chemistry Physical and Theoretical Chemistry Inert gas
Zdroj:	International Journal of Materials Research. 112:687-694
ISSN:	2195-8556 1862-5282
DOI:	10.1515/ijmr-2020-8043
Popis:	To determine the weldability of SUS445 ferritic stainless steel, two welding approaches, tungsten inert gas and fiber laser welding processes, were used and compared. After the welding processes, the microstructure, mechanical properties, and corrosion resistance of the welds were investigated. In the weld fusion zones of these two welding approaches, different morphologies of the grains were obtained. No obvious precipitation formed in these zones. In the heat affected zone of the tungsten inert gas welds, more volume fraction and larger grain sizes of the Laves phase and larger matrix grains were observed, which significantly affected its corrosion resistance and mechanical properties. However, in the heat affected zone of the fiber laser welds, only small amounts Laves phases and a relatively narrow matrix grain growth area were observed, which offers better corrosion resistance and mechanical properties.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::34e1a2430e095cce0eb0e571483eb4e7 https://doi.org/10.1515/ijmr-2020-8043 Zobrazit plný text záznamu