航空科学技术2025，Vol.36Issue(4)：56-63,8.DOI:10.19452/j.issn1007-5453.2025.04.007
超声振动对激光立体成形GH3536合金拉伸性能的影响
Effect of Ultrasonic Vibration on Tensile Properties of Laser Solid Formed GH3536 Alloy
摘要
Abstract
The introduction of ultrasonic vibration assistance in additive manufacturing was an emerging and effective method to improve the microstructure and mechanical properties.Relevant research on this would help to optimize the microstructure and properties of materials.The effect of ultrasonic vibration on the microstructure and tensile properties of laser solid forming(LSF)GH3536 alloy was studied in this paper.The results show that the epitaxial columnar to equiaxed transformation(CET)transformation occurs in the LSF GH3536 alloy by ultrasonic vibration.The microhardness of LSF GH3536 alloy increases from 225HV to 276HV,increases by 22.7%,when ultrasonic vibration was applied in the process of LSF.The microhardness changes little with the increase of ultrasonic amplitude.The tensile strength of LSF GH3536 alloy without ultrasonic vibration is 539MPa,the elongation after fracture is 13.9%,and the fracture is ductile fracture.When ultrasonic vibration is applied,the tensile strength of GH3536 alloy samples significantly improves.When ultrasonic amplitude is 60μm,the tensile strength and elongation after fracture of LSF GH3536 alloy samples are the highest,which are 813MPa and 19%,respectively,and increases by 50.8%and 36.7%,respectively,compared with the samples without ultrasonic vibration.In this paper,the application of ultrasonic assisted technology in laser solid formed nickel-based superalloy is explored,aiming to lay a foundation for the application of this technology in the aerospace field.关键词
激光立体成形/GH3536合金/超声振动/微观组织/拉伸性能Key words
laser solid forming/GH3536 alloy/ultrasonic vibration/microstructure/tensile properties分类
金属材料引用本文复制引用
吕诗劼,刘丰刚,黄春平,裘成,耿永祥..超声振动对激光立体成形GH3536合金拉伸性能的影响[J].航空科学技术,2025,36(4):56-63,8.基金项目
国家自然科学基金(52265053,52165050) （52265053,52165050）
航空科学基金(2022Z049056001) （2022Z049056001）
江西省研究生创新专项资金(YC2023-S722) National Natural Science Foundation of China(52265053,52165050) （YC2023-S722）
Aeronautical Science Foundation of China(2022Z049056001) （2022Z049056001）
Special Funds for Graduate Student Innovation in Jiangxi Province(YC2023-S722) （YC2023-S722）
