Scholarlink

<p>The application areas of laser welding are increasing everyday to replace various conventional welding techniques due to its high precision. An experimental study was carried out to study the weld quality of butt welded thin SS 304 sheets. A 2-kW Yb fiber laser system was used to weld the sheets varying in thickness from 0.8&#xa0;mm, 0.4&#xa0;mm and 0.25&#xa0;mm. The Ar gas was used as the shrouding gas at speed of 10 lit/min. The effects on the ultimate tensile strength, width of the weld geometry and microhardness of welded SS304 sheets were investigated using central composite design of experiment technique. The input parameters varied were supplied laser power, welding speed and the position of the laser focal point. The ANOVA findings demonstrated that the produced models were capable of accurately predicting responses within the confines of input parameters. Selected joints of each thickness were analyzed to study microstructural, fractographic and tensile behavior. It was observed that the base material composition and amount of heat addition due to laser parameters combination were significantly affecting microstructure and tensile behavior of welded joints.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Microstructure, Tensile Behavior and Weld geometry Characterization of Laser Welded Thin SS304 Sheets

  • 期刊论文

  • 发表日期：

    2025年4月9日

查看全文
  • Dhanraj B. Waghmare,
  • Partha Saha

摘要

The application areas of laser welding are increasing everyday to replace various conventional welding techniques due to its high precision. An experimental study was carried out to study the weld quality of butt welded thin SS 304 sheets. A 2-kW Yb fiber laser system was used to weld the sheets varying in thickness from 0.8 mm, 0.4 mm and 0.25 mm. The Ar gas was used as the shrouding gas at speed of 10 lit/min. The effects on the ultimate tensile strength, width of the weld geometry and microhardness of welded SS304 sheets were investigated using central composite design of experiment technique. The input parameters varied were supplied laser power, welding speed and the position of the laser focal point. The ANOVA findings demonstrated that the produced models were capable of accurately predicting responses within the confines of input parameters. Selected joints of each thickness were analyzed to study microstructural, fractographic and tensile behavior. It was observed that the base material composition and amount of heat addition due to laser parameters combination were significantly affecting microstructure and tensile behavior of welded joints.