搭接结构不锈钢 301LN 激光焊接综合研究

IF 2.4 4区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING Welding in the World Pub Date : 2024-10-01 DOI:10.1007/s40194-024-01840-3
Thierry Adrien, Shayan Dehghan, Asim Iltaf, Noureddine Barka
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引用次数: 0

摘要

与传统方法相比,激光焊接具有明显的优势:热影响小,无需填充金属,焊接穿透力强。它效率高、成本低,是连接不锈钢 301LN 等材料的理想选择,也是应对气候变化的行业的理想选择。本研究深入探讨了各种操作参数对焊接质量的影响,特别是对微观结构和显微硬度的影响。采用田口方法设计了一个实验装置,对这些因素进行系统分析。微观结构分析表明,焊缝的晶粒结构独特,热影响区(HAZ)较小,表明焊接控制精确。通过微观结构成像,焊接熔透测量结果与特定的操作参数相关联。显微硬度分析进一步强调了对热影响区厚度的控制,这对确保焊接接头的完整性至关重要。通过方差分析(ANOVA),确定了影响物理性质的重要因素,有助于构建数学模型,准确量化参数影响因素。研究结果表明,尽管要与焊接速度和激光功率设置保持微妙的平衡,但尽量减小焦斑直径是优化焊接渗透的关键。调整这些参数还能影响焊缝和母材之间的化学成分匹配,这对结构完整性至关重要。为达到接近母材的理想硬度,建议采用特定的参数范围:光束振幅为 1.45 毫米,光束振幅在 2.82 至 2.97 千瓦之间,焦斑直径大于 0.34 毫米。研究结果为提高工业应用中的焊接质量和效率提供了实用见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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A comprehensive study on laser welding of stainless steel 301LN in lap joint configuration

Laser welding offers distinct advantages over traditional methods: less heat impact, no filler metal needed, and strong weld penetration. It is efficient and cost-effective, perfect for joining materials like the stainless steel 301LN, and ideal for industries addressing climate change. This study delves into the impact of various operating parameters on weld quality, specifically focusing on microstructure and microhardness. Using the Taguchi method, it is designed an experimental setup to systematically analyze these factors. The microstructure analysis shows a unique grain structure in the weld bead and a small heat-affected zone (HAZ), indicating precise welding control. Weld penetration measurements correlated with specific operating parameters using microstructure imaging. The microhardness analysis further underlined the control over HAZ thickness, crucial for ensuring the integrity of the welded joint. Through analysis of variance (ANOVA), it is identified significant factors affecting physical properties, help to construct a mathematical model to quantify parameter influences accurately. Findings suggest that minimizing the focal spot diameter is key to optimizing weld penetration, albeit in a delicate balance with welding speed and laser power settings. Adjusting these parameters can also influence the chemical composition match between the weld bead and base material, crucial for structural integrity. For achieving the desired hardness close to the base material, specific parameter ranges are recommended: a beam oscillation amplitude of 1.45 mm, a beam oscillation amplitude between 2.82 and 2.97 kW, and a focal spot diameter above 0.34 mm. Findings offer practical insights for improving weld quality and efficiency in industrial applications.

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来源期刊
Welding in the World
Welding in the World METALLURGY & METALLURGICAL ENGINEERING-
CiteScore
4.20
自引率
14.30%
发文量
181
审稿时长
6-12 weeks
期刊介绍: The journal Welding in the World publishes authoritative papers on every aspect of materials joining, including welding, brazing, soldering, cutting, thermal spraying and allied joining and fabrication techniques.
期刊最新文献
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