摘要
激光增材制造(Laser Additive Manufacturing,LAM)技术实际上是一种兼顾精确成形和高性能成性一体化需求的先进制造技术。首先介绍了两种典型激光增材制造技术的成形原理及其特点;然后介绍国内外激光增材制造技术的最新研究进展;再重点介绍西安交通大学在激光增材制造技术方面的最新研究进展:(1)超声振动辅助激光熔覆沉积对IN718沉积态组织与性能的影响;(2)感应辅助激光熔覆沉积DD4定向晶修复DZ125L叶片的研究;(3)Cu W功能梯度复合材料的激光熔覆沉积工艺研究;(4)送粉气纯度对激光熔覆Fe314修复40Cr组织与性能的影响;最后阐述了激光增材制造技术所面临的挑战。
Laser Additive Manufacturing （LAM） is recognized as an advanced manuthcturing technology with in- tegration of precision forming and high-performance forming. Initially, principles and characteristics of two representative LAM technologies are introduced respectively, following which the research developments of Xi＇an Jiaotong University in the field of LAM technology are emphatically introduced from the following aspects： （1） The effects of ultrasonic vibration assisted laser cladding deposition process on the as-deposited microstructures and properties of IN718; （2） Repair of direc- tionally solidified DZI25L blades with DD4 by induction-assisted laser cladding deposition process; （3） The laser cladding deposition process of CuW functionally gradient composite materials; （4） Effects of the purity of powder carrier gas on the microstructures and properties of 40Cr repaired with Fe314 by laser cladding. Ultimately, the challenges that LAM technol- ogy may confront with are explained.
出处
《航空制造技术》
2016年第22期16-22,共7页
Aeronautical Manufacturing Technology
基金
国家重点专项"高性能金属结构件激光增材制造控形控性研究"(2016YFB1100102)
国家自然科学基金项目(51275392)
陕西省科技统筹创新工程计划项目(2015KTTSGY03-06)
关键词
激光增材制造
激光熔覆沉积
选区激光熔化
Laser additive manufacturing
Laser cladding deposili^m： Selective laser melling
