粉末冶金技术2025，Vol.43Issue(1)：71-78,8.DOI:10.19591/j.cnki.cn11-1974/tf.2023030007
退火温度对La2O3强化钼铼合金的影响
Effect of annealing temperature on La2O3 strengthened Mo-Re alloys
摘要
Abstract
Molybdenum rhenium alloys are the solid solution strengthening alloys with high melting point and low expansion coefficient,and the addition of rare earth oxides can refine the grains and play a role in dispersion strengthening.Molybdenum-rhenium(Mo-Re)and molybdenum-rhenium-lanthanum(Mo-Re-La2O3)alloy plates were prepared by powder metallurgy and cross rolling method in this paper,and were annealed at different temperatures.The microstructure and room temperature tensile fracture morphology of the Mo-Re alloys and Mo-Re-La2O3 alloys annealed at different temperatures were observed by metallographic microscope and scanning electron microscope.The Vickers hardness and room temperature tensile properties of the two alloy plates were compared.The results show that the recrystallization temperature of Mo-Re alloys is about 1200℃,while that of the Mo-Re-La2O3 alloys is 1400℃.The addition of La2O3 increases the recrystallization temperature by about 200℃.With the increase of annealing temperature,the hardness and tensile strength of the Mo-Re alloys and Mo-Re-La2O3 alloys decrease significantly,while the elongation of Mo-Re-La2O3 alloys increases,up to 27.5%.关键词
弥散强化/钼铼合金/退火工艺/力学性能Key words
dispersion strengthening/molybdenum rhenium alloys/annealing process/mechanical properties分类
矿业与冶金引用本文复制引用
任雪婷,王广达,周武平,熊宁..退火温度对La2O3强化钼铼合金的影响[J].粉末冶金技术,2025,43(1):71-78,8.基金项目
国家重点研发计划专项资助项目(2022YFB3705400) （2022YFB3705400）
