双面光纤激光焊接:连接厚板的新型焊接技术

IF 1.2 4区 材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Materialwissenschaft und Werkstofftechnik Pub Date : 2024-07-19 DOI:10.1002/mawe.202300239
M. K. Subramaniyan, G. Pathinettampadian, P. Castro, S. Thanigainathan
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引用次数: 0

摘要

304 级不锈钢是最常用的不锈钢等级之一,因其耐腐蚀性而被选用。304 是最理想的选择,因为其较低的碳含量可降低晶间腐蚀,尤其是当耐腐蚀性是项目的首要目标时。这项研究调查了新型双面光纤激光焊接不锈钢 304 板的机械和微观结构特征。双面光纤激光焊接技术用于制造厚度为 5 毫米的板材对接接头。激光频率为 25 Hz,速度为 6 mm ⋅ s-1,热输入功率为 1.4 kW,最大熔深为 2.7 mm。板的两侧采用相同的参数。使用光学显微镜拍摄焊缝和纯金属的显微照片,观察树枝状结构。为确保焊接件的质量,还进行了拉伸、弯曲、显微硬度和冲击试验。焊接件由奥氏体和δ-铁素体组成。X 射线衍射显示焊接件中同时存在奥氏体和铁素体。在拉伸样品失效时出现了韧性断裂模式。
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Double side fiber laser welding: A novel welding technique to join thick plates Doppelseitiges Faserlaserstrahlschweißen: Ein neues Schweißverfahren zum Verbinden dicker Bleche

Stainless steel grade 304, is one of the most utilized grades of stainless steel and it is chosen for its corrosion resistance. The ideal option is 304, since its lower carbon content lowers intergranular corrosion, especially if corrosion resistance is a top goal for a project. This research work investigates the mechanical and microstructural characteristics of a novel double side fiber laser welded stainless steel 304 plates. Double side fiber laser welding technique is used to fabricate a butt joint with plates of thickness 5 mm. With a laser frequency of 25 Hz, speed of 6 mm ⋅ s−1, and a heat input of 1.4 kW in terms of power is applied to the joint, resulting in a maximum depth of penetration of 2.7 mm. The same parameter is applied on both sides of the plate. The dendritic structures are observed through micrographs of weld and pure metal captured using an optical microscope. Experiments such as tensile, bend, microhardness and impact test have been conducted to ensure the quality of weldment. The weldment consists of austenite and δ-ferrite. X-ray diffraction reveal presence of both austenite and ferrite in the weldment. Ductile mode of fracture occurred during failure of tensile samples.

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来源期刊
Materialwissenschaft und Werkstofftechnik
Materialwissenschaft und Werkstofftechnik 工程技术-材料科学:综合
CiteScore
2.10
自引率
9.10%
发文量
154
审稿时长
4-8 weeks
期刊介绍: Materialwissenschaft und Werkstofftechnik provides fundamental and practical information for those concerned with materials development, manufacture, and testing. Both technical and economic aspects are taken into consideration in order to facilitate choice of the material that best suits the purpose at hand. Review articles summarize new developments and offer fresh insight into the various aspects of the discipline. Recent results regarding material selection, use and testing are described in original articles, which also deal with failure treatment and investigation. Abstracts of new publications from other journals as well as lectures presented at meetings and reports about forthcoming events round off the journal.
期刊最新文献
Deep drawing of coated aluminium sheets: Experimental and numerical study Tiefziehen von beschichteten Aluminiumblechen: Experimentelle und numerische Untersuchungen Materialwiss. Werkstofftech. 11/2024 Impressum: Materialwiss. Werkstofftech. 11/2024 Cover Picture: (Materialwiss. Werkstofftech. 11/2024) Investigating the influence of ferric oxide grade alumino-silicate cenosphere particulates and heat treatment on the microstructural evolution and mechanical properties of Al6061/ferric oxide alumino-silicate cenosphere (x weight %) composite Untersuchung des Einflusses von Eisenoxid-Aluminium-Silikat-Cenosphärenpartikeln und Wärmebehandlung auf die mikrostrukturelle Entwicklung und die mechanischen Eigenschaften von Al6061/Eisenoxid-Aluminium-Silikat-Cenosphäre (x Gew.–%)-Verbundwerkstoff
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