(北京理工大學 機械工程與自動化學院， 北京 100081)
摘 要: 含鎢量較高的W-Ni-Fe密度高合金具有密度高、強度與韌性配合較好等特點，適合用作動能穿甲彈及防輻射屏蔽材料；而靜液擠壓技術在脆性材料變形強化方面具有很大的潛在優(yōu)勢。研究了靜液擠壓93W-4.9Ni-2.1Fe合金的性能與顯微組織，并與傳統(tǒng)的旋鍛態(tài)93W-4.9Ni-2.1Fe合金進行了比較。結果表明，經靜液擠壓變形強化的高比重鎢合金，硬度分布和顯微組織更均勻；性能更好。
關鍵字: 靜液擠壓； 鎢合金； 變形強化； 性能； 顯微組織
tungsten alloy deformed by hydrostatic extrusion
（Department of Mechanical Engineering,
Beijing Institute of Technology， Beijing 100081， P.R.China）
Abstract:W-Ni-Fe alloy with higher content of tungsten has a series of good properties, such as high density, high strength and good ductility. It's applicable to be used as penetrors, armor-piercing bullets, and radiation shields. The hydrostatic extrusion technology has a potential advantage in the deformation strengthening to the metals with higher brittleness. The properties and the microstructure of the 93W-Ni-Fe are studied. Compared with the traditional swaging technology, the distribution of the hardness and the microstructure are uniform, the properties of this kind of alloy deformed by hydrostatic extrusion are higher.
Key words: hydrostatic extrusion； tungsten alloy； deformation strengthening； mechanical properties； microstructure
