当前位置：首页 > 过刊浏览->2024年45卷第9期
激光增材制造中裂纹萌生机理及抑制方法研究
Study of the Crack Initiation Mechanism and Suppression Methods in Laser Additive Manufacturing
浏览(572) 下载(61)
- DOI:
- 作者:
- 刘 冠，赵 凯，刘德福，蔺永诚
LIU Guan, ZHAOKai, LIU Defu, LIN Yongcheng
- 作者单位:
- 中南大学机电工程学院，湖南长沙410083
School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
- 关键词:
- 激光增材制造；裂纹萌生；抑制措施；精密制造
laser additive manufacturing; crack initiation; crack suppression method; precision manufacturing
- 摘要:
- 激光增材制造是一种通过激光熔化或烧结材料逐层构建物体的先进制造技术。尽管它具有显著的优点，如
复杂几何形状构件的制造能力和材料利用率高，但裂纹问题依然是影响其性能和工程应用的重要因素。 本文综述了激
光增材制造中裂纹的类型、萌生机制及裂纹抑制方法，从工艺参数优化、光束整形以及材料改性等方面对激光增材制造
无裂纹产品的发展趋势进行了分析和探究，指出激光增材制造在精密医用植入物制造方面的应用可能为该领域重要的
发展方向之一。
Laser additive manufacturing is an advanced manufacturing technology that constructs objects layer by layer through laser melting or sintering materials. Despite their significant advantages, such as the ability to manufacture components with complex geometric shapes and high material utilization rates, cracking issues remain a critical factor affecting their performance and engineering applications. This paper reviews the types of cracks in laser additive manufacturing, their initiation mechanisms, and methods for crack suppression. It analyses and explores the development trends of producing crack-free products in laser additive manufacturing from aspects such as process parameter optimization, beam shaping, and material modification. This study highlights that the application of laser additive manufacturing in the production of precision medical implants may be an important development direction in this field. Key words： laser additive manufacturing; crack initiation; crack suppression method; precision manufacturing