Influence of alloying elements on process dynamics during laser deep penetration welding

合金元素对激光深熔焊过程动力学的影响

• 批准号: 331107213
• 负责人: Professor Dr.-Ing. Frank Vollertsen
• 金额: --
• 依托单位: BIAS - Bremer Institut für Angewandte Strahltechnik GmbH
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/331107213?language=en
• 关键词: Influence; alloying; elements; process; dynamics

Alloying elements in materials can significantly influence the material properties of the base material. In laser deep penetration welding the surface tension and its temperature dependent gradient as well as the vapor pressure and the viscosity of the melt mainly influence the melt pool behavior and also directly the keyhole. Keyhole dynamics and formation of defects are affected by material properties and therefore by alloying elements. Limited research has been done to find out about these correlations which would help getting a better knowledge about the complex process and could offer a possibility to influence the process behavior and welding defects by alloying element design.Therefore, the aim of the project is to understand the influence of material properties affected by alloying elements on the spatter formation during laser deep penetration welding of aluminum. The challenge is to determine spatter characteristics (size, speed and direction) depending on the point of origin and their frequency distribution. The deep alloying process can be used to produce a homogeneous pre distribution of the alloyed elements in the aluminum sheet. These deep alloyed areas can be used as the base material for subsequent bead on plate welding experiments. Spatter characteristics and their points of origin are observed during welding depending on the alloying elements.

材料中的合金元素可以显着影响基材的材料性能。在激光深熔焊中，表面张力及其温度相关梯度以及熔体的蒸气压和粘度主要影响熔池行为，也直接影响小孔。小孔动力学和缺陷的形成受到材料特性的影响，因此也受到合金元素的影响。为了找出这些相关性，已经进行了有限的研究，这将有助于更好地了解复杂的工艺，并提供通过合金元素设计影响工艺行为和焊接缺陷的可能性。因此，该项目的目的是了解合金元素对材料性能的影响对铝激光深熔焊过程中飞溅形成的影响。面临的挑战是根据起源点及其频率分布确定飞溅特征（尺寸、速度和方向）。深度合金化工艺可用于在铝板中产生合金元素的均匀预分布。这些深层合金区域可用作后续焊珠板焊接实验的基础材料。根据合金元素，在焊接过程中观察飞溅特征及其起源点。

项目成果

Influence of Magnesium on Spatter Behavior in Laser Deep Penetration Welding of Aluminum Alloys

• DOI: 10.3390/jmmp3030071
• 发表时间: 2019-08
• 期刊: Journal of Manufacturing and Materials Processing
• 影响因子: 3.2
• 作者: Andreas Felsing-;P. Woizeschke