低温烧结高钨高比重合金的特性及其抗腐蚀性能

详细信息

CHARACTERISTICS AND CORROSION RESISTANT PROPERTY OF HIGH TUNGSTEN HEAVY ALLOY SINTERED AT LOW TEMPERATURE

摘要: 研究了以高活性W、Ni、Cu复合粉末为原料,钨含量为93%(Wt)的高比重合金的低温烧结工艺特性、形变与断裂特性、强度与抗腐蚀性能。合金在1240℃的温度下进行低温烧结后,抗拉强度可高达950MPa,钨晶粒平均粒径小于5μm,具有明显的晶粒尺寸效应,有利于提高合金的强度、密度及其均匀性;合金还具有较好的抗腐蚀性能。
- 低温烧结 /
- 高比重合金 /
- 抗腐蚀性能
Abstract: The paper has studied the technological characteristics, deformation, fracture, strengthand corrosion resistence of heavy alloy with high activity composite powder of W,Ni and Cu asraw material and with 93% (wt) of tungsten content. After the alloy is sintered at a low temperature of 1240℃,its high tensile strenght as high as 950MPa can be obtained with an average grainsize of tungsten below 5μm which produce obvious grain sire effect,aiding in the improvement ofstrenth,density and homogeneity of alloy and also betterment of the corrosion resistence of alloy.
- sintering at low temperature /
- heavy alloy /
- corrosion resistence