90W-NiAlFe合金的烧结工艺和力学性能研究  

Sintering Process and Mechanical Properties of 90W-NiAlFe Alloy

作　　者：吴复尧[1] 祝志祥[1] 程兴旺[1] 才鸿年[1] 

机构地区：[1]北京理工大学材料科学与工程学院,北京100081

出　　处：《稀有金属》2007年第5期602-605,共4页Chinese Journal of Rare Metals

摘　　要：研究设计了一种新型穿甲弹用钨合金材料,粘结相为一种镍铝铁合金粉,其目的是使钨合金穿甲弹在侵彻装甲时容易出现绝热剪切现象,以提高穿甲弹的"自锐"效应。经过烧结成形后测定了该钨合金材料的动、静态力学性能。结果表明,静态下该合金的抗拉强度为690MPa,延伸率为8%,保证了其作为穿甲弹战斗部材料基本的力学性能要求;在应变为0.34,应变率为4139 s-1时,试样发生了绝热剪切断裂,达到了预期设计的目的。A new tungsten alloy for penetrator with NiA1Fe alloy binder was designed and studied using powder metallurgy route in order to improve ＂selfsharpening＂ performance of penetrator into armor. After dynamic and quasi-static mechanical properties were tested, results showed that the 90W-NiA1Fe corn-posite reached the basic mechanical properties which are required in penetrator were with tensile strength of 690 MPa and ductility of 8% elongation. Apparently adiabatic shear band was observed in the direction of the most shearing stress under the strain of about 0.34 and strain rate of about 4139 s^-1

关 键 词：钨合金 动态压缩 绝热剪切 压杆装置 

分 类 号：TG146[一般工业技术—材料科学与工程]