中国激光, 2019, 46 (1): 0102004, 网络出版: 2019-01-27
高沉积率激光熔覆沉积GH4169合金的微观组织与拉伸性能 下载: 1119次
Microstructure and Tensile Properties of High-Deposition-Rate Laser Metal Deposited GH4169 Alloy
激光技术 高沉积率激光熔覆沉积 GH4169合金 微观组织 热循环 拉伸性能 laser technique high-deposition-rate laser metal deposition GH4169 alloy microstructure thermal cycle tensile property
摘要
采用高沉积率激光熔覆沉积技术制备了GH4169合金试样, 研究了沉积率为2.2 kg/h时GH4169合金的微观组织和拉伸断裂机制。结果表明:高沉积率激光熔覆沉积GH4169合金沉积态试样的析出相主要包括Laves相、针状δ相及不均匀分布的γ″和γ′强化相。拉伸测试结果表明, 沉积态GH4169高温合金的塑性和强度均低于锻件标准。
Abstract
The GH4169 alloy samples are fabricated by the high-deposition-rate laser metal deposition (HDR-LMD) technique and their microstructures and tensile properties are investigated when the deposition rate is 2.2 kg/h. The precipitated phases of the HDR-LMDed samples mainly include Laves phase, acicular δ phase and non-uniformly distributed γ″ and γ′ phases. The tensile test results show that the plasticity and strength of the as-deposited superalloy are both lower than the forging standard.
李祚, 隋尚, 袁子豪, 李浩胜, 陈静, 林鑫. 高沉积率激光熔覆沉积GH4169合金的微观组织与拉伸性能[J]. 中国激光, 2019, 46(1): 0102004. Li Zuo, Sui Shang, Yuan Zihao, Li Haosheng, Chen Jing, Lin Xin. Microstructure and Tensile Properties of High-Deposition-Rate Laser Metal Deposited GH4169 Alloy[J]. Chinese Journal of Lasers, 2019, 46(1): 0102004.