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

作　　者：苏旭文 何志[1] 闫树欣 董龙龙 孙国栋 SU Xuwen;HE Zhi;YAN Shuxin;DONG Longlong;SUN Guodong(School of Materials Science and Engineering,Xi’an Shiyou University,Xi’an 710065,China;Xi'an Rare Metal Materials Institute Co.Ltd,Xi’an 710016,China;Northwest Institute for Nonferrous Metal Research,Xi’an 710016,China)

机构地区：[1]西安石油大学材料科学与工程学院,西安710065 [2]西安稀有金属材料研究院有限公司,西安710016 [3]西北有色金属研究院,西安710016

出　　处：《粉末冶金技术》2025年第1期86-93,共8页Powder Metallurgy Technology

基　　金：陕西省创新能力支撑计划资助项目(2023KJXX-096);陕西省科协青年人才托举计划资助项目(2021-1-2)。

摘　　要：为了有效抑制液相烧结下钨晶粒长大,通过1500℃液相烧结制备了ZrC弥散强化重钨合金(WHAs),分析了ZrC质量分数(1%、2%)对WHAs组织以及性能的影响。结果表明,随ZrC质量分数的增加,WHAs相对密度和W−W连接度下降,钨晶粒得到一定程度的细化。当ZrC质量分数为1%时,WHAs强塑性匹配效果最好,合金的相对密度达到了98.4%,钨晶粒尺寸为22.17μm,屈服强度和抗压强度(40%变形量)分别达到了791 MPa和2179 MPa,相比未添加ZrC的WHAs分别提升了8.35%和38.70%(730 MPa和1570 MPa)。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 22.17μm,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 

分 类 号：TG146.411[一般工业技术—材料科学与工程] TF125[金属学及工艺—金属材料]