当前位置: X-MOL 学术J. Laser Appl. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Investigations on the influence of adapted metal-based alloys on the process of laser beam melting
Journal of Laser Applications ( IF 2.1 ) Pub Date : 2020-05-01 , DOI: 10.2351/7.0000071
Andreas Wimmer 1 , Cara G. Kolb 1 , Mariam Assi 2 , Julien Favre 2 , Andreas Bachmann 1 , Anna Fraczkiewicz 2 , Michael F. Zaeh 1
Affiliation  

Additive manufacturing technologies are characterized by complex process interrelations. Consequently, specifically adapted alloys are required to enable a robust building process. In particular, laser beam melting (LBM) is increasingly used for the fabrication of sophisticated functional parts for various applications in numerous industrial sectors, such as automotive and aerospace. However, process stability and repeatability are major challenges for industrializing LBM. This paper presents a comprehensive investigation of the influence of AlSi10Mg additives in a 316L stainless steel powder during LBM. A two-stage experimental approach was applied, during which the temperature field around the molten track and the number of spatters during the LBM process were determined by means of high-speed thermographic imaging. Furthermore, the microstructure of the additively manufactured specimens, the modified 316L stainless steel powder, and the respective raw materials was characterized by scanning electron microscopy. The experimental study described in this paper aimed to obtain correlations between the additive content (input), the temperature field of the molten track, and the microstructure (outputs). It was found that the cooling rate decreases with a higher amount of AlSi10Mg in the powder. Furthermore, the microstructure analysis demonstrated an increasing formation of the body-centered cubic phase with a higher fraction of AlSi10Mg. The conclusion is that additives in the powder considerably affect important key characteristics of the LBM process.

中文翻译:

金属基合金对激光束熔炼过程影响的研究

增材制造技术的特点是复杂的工艺相互关系。因此,需要特别适应的合金来实现稳健的建造过程。特别是,激光束熔化 (LBM) 越来越多地用于制造复杂的功能部件,用于众多工业领域的各种应用,例如汽车和航空航天。然而,工艺稳定性和可重复性是 LBM 工业化的主要挑战。本文全面研究了 LBM 过程中 AlSi10Mg 添加剂对 316L 不锈钢粉末的影响。采用两阶段实验方法,在此期间,通过高速热成像成像确定 LBM 过程中熔融轨迹周围的温度场和飞溅数量。此外,通过扫描电子显微镜对增材制造试样、改性 316L 不锈钢粉末和各自原材料的微观结构进行了表征。本文中描述的实验研究旨在获得添加剂含量(输入)、熔融轨迹的温度场和微观结构(输出)之间的相关性。发现冷却速率随着粉末中 AlSi10Mg 含量的增加而降低。此外,微观结构分析表明,随着 AlSi10Mg 含量的增加,体心立方相的形成越来越多。结论是粉末中的添加剂显着影响 LBM 工艺的重要关键特性。并对各原料进行扫描电子显微镜表征。本文中描述的实验研究旨在获得添加剂含量(输入)、熔融轨迹的温度场和微观结构(输出)之间的相关性。发现冷却速率随着粉末中 AlSi10Mg 含量的增加而降低。此外,微观结构分析表明,随着 AlSi10Mg 含量的增加,体心立方相的形成越来越多。结论是粉末中的添加剂显着影响 LBM 工艺的重要关键特性。并对各原料进行扫描电子显微镜表征。本文中描述的实验研究旨在获得添加剂含量(输入)、熔融轨迹的温度场和微观结构(输出)之间的相关性。发现冷却速度随着粉末中 AlSi10Mg 含量的增加而降低。此外,微观结构分析表明,随着 AlSi10Mg 含量的增加,体心立方相的形成越来越多。结论是粉末中的添加剂显着影响 LBM 工艺的重要关键特性。和微观结构(输出)。发现冷却速率随着粉末中 AlSi10Mg 含量的增加而降低。此外,微观结构分析表明,随着 AlSi10Mg 含量的增加,体心立方相的形成越来越多。结论是粉末中的添加剂显着影响 LBM 工艺的重要关键特性。和微观结构(输出)。发现冷却速率随着粉末中 AlSi10Mg 含量的增加而降低。此外,微观结构分析表明,随着 AlSi10Mg 含量的增加,体心立方相的形成越来越多。结论是粉末中的添加剂显着影响 LBM 工艺的重要关键特性。
更新日期:2020-05-01
down
wechat
bug