激光熔化沉积镍基高温合金微观组织及力学性能的研究进展  

Research progress on microstructure and mechanical properties of nickel based superalloys deposited by laser melting

作　　者：黄西娜 何磊 岳文[2,3] 翟月雯 王成彪 HUANG Xina;HE Lei;YUE Wen;ZHAI Yuewen;WANG Chengbiao(School of Mechanical and Electrical Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China;School of Engineering and Technology,China University of Geosciences(Beijing),Beijing 100083,China;Zhengzhou Institute,China University of Geosciences(Beijing),Zhengzhou 451283,China;Beijing Research Institute of Mechanical&Electronic Technology Co.LTD.,Beijing 100083,China)

机构地区：[1]中国矿业大学(北京)机械与电气工程学院,北京100083 [2]中国地质大学(北京)工程技术学院,北京100083 [3]中国地质大学(北京)郑州研究院,河南郑州451283 [4]中国机械总院集团北京机电研究所有限公司,北京100083

出　　处：《粉末冶金工业》2023年第6期101-109,共9页Powder Metallurgy Industry

基　　金：国家自然科学基金青年科学基金资助项目(42102345);中央高校基本科研业务费专项资金资助项目(2022XJJD01)。

摘　　要：激光熔化沉积工艺在镍基高温合金等难加工金属方面具有很强的制造优势。因此,阐述了激光熔化沉积成形镍基高温合金过程中,扫描路径、激光功率和扫描速度对镍基高温合金微观组织及力学性能的影响,以阐明该工艺在镍基高温合金制备和修复领域的潜力。通过对激光熔化沉积成形镍基高温合金微观组织及典型缺陷形成机制的探究,以期为后续激光熔化沉积制备镍基高温合金微观组织及力学性能的调控提供理论依据。Laser melting deposition process has a strong manufacturing advantage in difficult-to-machine metals such as nickel base superalloys. In this paper, the effects of scanning path, laser power and scanning speed on the microstructure and mechanical properties of nickel base superalloys during laser melting and deposition forming of nickel base superalloys were described, so as to clarify the potential of this process in the field of preparation and repair of nickel base superalloys. Through the investigation of the microstructure and the formation mechanism of typical defects of nickel base superalloys formed by laser melting and deposition, it is expected to provide a theoretical basis for the subsequent adjustment of the microstructure and mechanical properties of nickel base superalloys prepared by laser melting and deposition.

关 键 词：激光熔化沉积 镍基高温合金 单晶镍基高温合金 扫描方式 激光功率 扫描速度 

分 类 号：TG665[金属学及工艺—金属切削加工及机床] TG132.3[一般工业技术—材料科学与工程]