金属加工（热加工）Issue(6)：87-92,108,7.
激光定向能量沉积纯镍的成形性与组织性能
Formability,microstructure and properties of pure nickel fabricated via laser directed energy deposition
张文奇 1尹媛 1冯岩 1李庆棠 1徐东宏1
作者信息
- 1. 北京新风航天装备有限公司 北京 100854
- 折叠
摘要
Abstract
Pure nickel exhibits excellent corrosion and oxidation resistance,high thermal conductivity,and high-temperature stability,making it widely used in industries such as aerospace,military,and marine.This study employs Laser Directed Energy Deposition(LDED)technology to prepare bulk samples of pure nickel powder under different laser power settings,and characterizes their formability and microstructural properties.The results show that,under the experimental conditions,the formability of pure nickel via LDED is good,with relative densities exceeding 99.9％in the laser power range of 600W to 1200W.At a laser power of 800W,the relative density reaches its maximum,indicating the optimal processing parameters.At this point,the samples exhibit a typical coarse columnar grain structure,with an average tensile strength of(371.59±49.86)MPa and an average elongation at break of 32.64％±3.16％.The coefficient of thermal expansion increases with temperature,measuring(10.75±0.77)10-6/K at 100℃ and(17.13±0.76)10-6/K at 500℃.The findings of this study provide important process references for the high-quality additive manufacturing of pure nickel components.关键词
激光定向能量沉积/纯镍/力学性能/热膨胀性Key words
laser directed energy deposition/pure nickel/mechanical properties/thermal expansion引用本文复制引用
张文奇,尹媛,冯岩,李庆棠,徐东宏..激光定向能量沉积纯镍的成形性与组织性能[J].金属加工（热加工）,2025,(6):87-92,108,7.
