粉末冶金技术2025，Vol.43Issue(1)：86-93,8.DOI:10.19591/j.cnki.cn11-1974/tf.2023040009
纳米ZrC粉末对90W-7Ni-3Fe合金组织及性能影响
Effect of nano-ZrC powders on microstructure and properties of 90W-7Ni-3Fe alloys
摘要
Abstract
To effectively inhibit the growth of tungsten grains during the liquid phase sintering,the ZrC dispersion-strengthened heavy tungsten alloys(WHAs)were prepared by liquid phase sintering at 1500℃.The effects of ZrC mass fraction(1%and 2%)on the microstructure and properties of WHAs were analyzed.The results show that,with the increase of ZrC mass fraction,the relative density and W-W contiguity of WHAs decrease,and the tungsten grains are refined to a certain extent.When the ZrC mass fraction is 1%,the strength-ductility matching effect of WHAs is the best,the relative density reaches 98.4%,the tungsten grain size is 22.17 μm,and the yield strength and compressive strength(40%deformation)reach 791 MPa and 2179 MPa,respectively,which are increased by 8.35%and 38.70%,compared with WHAs without ZrC(730 MPa and 1570 MPa).关键词
重钨合金/液相烧结/纳米ZrC粉末/力学性能/纳米复合粉体Key words
tungsten heavy alloys/liquid phase sintering/nano-ZrC powders/mechanical properties/nanocomposite powders分类
金属材料引用本文复制引用
苏旭文,何志,闫树欣,董龙龙,孙国栋..纳米ZrC粉末对90W-7Ni-3Fe合金组织及性能影响[J].粉末冶金技术,2025,43(1):86-93,8.基金项目
陕西省创新能力支撑计划资助项目)(2023KJXX-096) （2023KJXX-096）
陕西省科协青年人才托举计划资助项目(2021-1-2) （2021-1-2）
