Residual stress, micro-hardness and tensile properties of ANSI 304 stainless steel thick sheet by fiber laser welding

Zhang, L.; Lu, Jinzhong; Luo, Kaiyu; Feng, Aixin; Dai, Fengze; Zhong, J.S.; Luo, Meng; Zhang, Y.K.

doi:10.1016/j.msea.2012.11.001

Cited by 47 publications

(24 citation statements)

References 38 publications

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“…Laser welds exhibited comparable strength when compared with the base material. As for ANSI 304 stainless steel, Zhang et al [2013] demonstrated that the fiber-laser welded joints showed the lowest tensile residual stress, the highest micro-hardness and tensile strength when compared with CO 2 and Nd:YAG laser welded ones.…”

Section: Introductionmentioning

confidence: 88%

“…4, HAZ contained three regions, namely coarse-grained heat-affected zone (CGHAZ), fine-grained heat-affected zone (FGHAZ) and mix-grained heat-affected zone (MGHAZ).The width of FZ and HAZ were about 1~3mm and 0.8~1.2mm, respectively. The width of FZ and HAZ of laser welding joints was narrower than that of manufactured by traditional welding method, mainly due to the lower heat input [Zhang et al, 2013 andSokolov et al, 2011] and higher power density 10 6 W/cm 2 [Roncery et al, 2012 andMoosavy et al, 2014] of the laser welding compared to those of the traditional welding technologies. The microstructure of welded joint was strongly dependent on the peak temperature and cooling rate during the welding process [Parkes et al, 2013 andNayaka et al, 2012], which varied with the distance to the center of the FZ.…”

Section: Microstructure Evolutionmentioning

confidence: 99%

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Microstructure formation and precipitation in laser welding of microalloyed C–Mn steel

Wang

Chen

Wang

et al. 2015

Journal of Materials Processing Technology

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Section: Introductionmentioning

confidence: 88%

Section: Microstructure Evolutionmentioning

confidence: 99%

Microstructure formation and precipitation in laser welding of microalloyed C–Mn steel

Wang

Chen

Wang

et al. 2015

Journal of Materials Processing Technology

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“…The welding heat input is asymmetrical in the thickness of the non-penetration plate, where the solidi cation and phase transformation of the weld bead are not synchronized with the cooling contraction of the partial non-penetrated plate, and the constraint of free expansion and contraction of the weld bead in the non-penetration plate is greater than that of the penetration plate, as a result, the residual stress near the weld fusion line of the non-penetration plate is much higher than that of the penetration plate [21][22][23].…”

Section: Analysis and Discussionmentioning

confidence: 99%

Fatigue resistance and failure behavior of penetration and non-penetration laser welded lap joints

Guo

Liu²,

et al. 2020

Preprint

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The fatigue resistance and failure behaviour of penetration 1.5 + 0.8-P and non-penetration 0.8 + 1.5-N laser welded lap joints prepared with 0.8 mm and 1.5 mm cold-rolled 301L plates were investigated. The weld beads showed a solidification microstructure of primary ferrite with good thermal cracking resistance, and their hardness was lower than that of the plates. The 1.5 + 0.8-P joint exhibited a better resistance to high-cycle fatigue failure, while the 0.8 + 1.5-N joint showed a higher resistance to low-cycle fracture. The failure modes of 0.8 + 1.5-N and 1.5 + 0.8-P joints were 1.5 mm and 0.8 mm lower lap plate fracture, respectively, and the primary cracks were initiated at welding fusion lines on the lap surface. There were long plastic ribs on the penetration plate fracture, but not on the non-penetration plate fracture. The fatigue resistance stress of the penetration and non-penetration plates in the crack initiation areas calculated based on the mean fatigue limits is 408 MPa and 326 MPa, respectively. The main reason for the difference in fatigue performance between the two laser welded joints was that the asymmetrical heating in the non-penetration plate thickness resulted in higher residual stress near the welding fusion line.

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“…Esse tipo de comportamento, em que o cordão de solda apresenta resultados superiores ao metal base, é comum na literatura e depende de fatores como parâ-metros de soldagem, a técnica empregada e o próprio material [5,6]. Os problemas de corrosão normalmente associados com a soldagem de aços inoxidáveis austeníticos estão relacionados com efeitos de precipitação e de segregação química, que geram regiões com baixos teores de Cr, o que enfraquece a camada passiva.…”

Section: Figuraunclassified

Soldagem do aço inoxidável AISI 316 com laser à fibra de alta potência: influência dos parâmetros operacionais na micro dureza e na susceptibilidade à corrosão eletrolítica dos cordões de solda

2013

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Soldagem do aço inoxidável AISI 316 com laser à fibra de alta potência: influência dos parâmetros operacionais na micro dureza e na susceptibilidade à corrosão eletrolítica dos cordões de solda Welding of the stainless steel AISI 316 with high power fiber laser: influence of the operational parameters on microhardness and electrolytic corrosion susceptibility of the weld beads RESUMOEste trabalho faz uma avaliação da influência de parâmetros operacionais utilizados no processo de soldagem a laser do aço inoxidável AISI 316. Os resultados dos experimentos de soldagem realizados com parâmetros ajustados para diversas situações foram avaliados levando em consideração a densidade de potência disponibilizada e o tempo de interação do feixe com o metal base. Essas avaliações foram baseadas nos resultados de microdureza e nos ensaios de corrosão eletrolítica das soldas, auxiliadas pela macrografia do cordão de solda. Buscou-se evidenciar correlações entre os parâmetros operacionais selecionados para os experimentos e os resultados obtidos nos cordões de solda, medindo-se grandezas como largura e profundidade. Concluiu-se que a escolha adequada dos parâmetros operacionais é fundamental para a garantia da qualidade dos cordões de solda. Além disso, validou-se um método rápido de avaliação da susceptibilidade dos cordões de solda à corrosão.Palavras-chave: soldagem a laser, aço AISI 316, laser à fibra, corrosão eletrolítica. ABSTRACTThis paper addresses an evaluation of the influence of operational parameters used in the AISI 316 stainless steels laser welding process. The results of the welding experiments performed with parameters adjusted to a variety of situations were evaluated taking into account the power density available and the interaction time of the laser beam with the base metal. These evaluations were based on the results of microhardness and the electrolytic corrosion tests of the solders, assisted by the macrography of the weld bead. It was sought to emphasize correlations between selected operating parameters and the results obtained with weld beads, measuring their width and depth. It was concluded that the proper choice of operating parameters is fundamental to the guarantee of quality of the weld beads. Besides that, a quick method of evaluation of weld beads susceptibility was validated.

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Residual stress, micro-hardness and tensile properties of ANSI 304 stainless steel thick sheet by fiber laser welding

Cited by 47 publications

References 38 publications

Microstructure formation and precipitation in laser welding of microalloyed C–Mn steel

Microstructure formation and precipitation in laser welding of microalloyed C–Mn steel

Fatigue resistance and failure behavior of penetration and non-penetration laser welded lap joints

Soldagem do aço inoxidável AISI 316 com laser à fibra de alta potência: influência dos parâmetros operacionais na micro dureza e na susceptibilidade à corrosão eletrolítica dos cordões de solda

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