退火温度对掺杂W-Re丝组织和性能的影响  

Effect of Annealing Temperature on the Structures and Properties of Doped W-Re Wires

作　　者：李应泉[1] 张清[1] 邓朝权[1] 

机构地区：[1]西北有色金属研究院

出　　处：《稀有金属材料与工程》1997年第6期36-40,共5页Rare Metal Materials and Engineering

摘　　要：研究了退火温度对３种含Ｒｅ量不同的掺杂Ｗ－Ｒｅ丝组织和性能的影响。结果表明：退火温度改变了掺杂Ｗ－Ｒｅ丝的抗拉强度、延伸率、电阻率、弯折性能及晶粒组织。３种含Ｒｅ量不同的掺杂Ｗ－Ｒｅ丝的抗拉强度随退火温度的提高而降低；在相同退火温度下含Ｒｅ量提高，强度越大。当退火温度升至１６００℃时，３种掺杂Ｗ－Ｒｅ丝的延伸率达到最高值，随着退火温度继续升高，延伸率明显下降。Ｗ－Ｒｅ丝电阻率随退火温度提高和Ｒｅ含量增加呈线性增加。掺杂Ｗ加入少量Ｒｅ后，再结晶温度被提高且再结晶温度随Ｒｅ含量增加而降低。掺杂Ｗ－３Ｒｅ丝的再结晶组织形貌与非掺杂Ｗ－３Ｒｅ丝是不同的。非掺杂Ｗ－３Ｒｅ丝的组织形貌类似于纯Ｗ。The effect of annealing temperature on the structures and properties of doped W-Re wires of three different Re contents have been investigated The results show that an annealing treatment affects the tensile strength, elongation, resistivity, bending property and grain structure of doped W-Re wires The tensile strength of doped W-Re wires of three different Re contents decreases with increasing of annealing temperature The tensile strengths of doped W-Re wires of higher Re contents are higher than those of lower Re contents at the same annealing temperature At an annealing temperature of 1 600℃, the elongation of three doped W-Re wires attains its maximum value, after which the elongation decreases significant with increase of annealing temperature The resistivity of W-Re increases linearly with increasing annealing temperature and Re content After Re is added to the doped tungsten, the recrytallization temperature first increases, but subsequently decreases with the increases of Re contents The morphology of the recrystallized structure of doped W-3Re wire is different from that of non-doped W-3Re wire The morphology of the recrystallized structure of non-doped W-3Re wire is similar to that of pure tungsten, but the recrystallized structure of doped W-3Re wire retains the long recrystallized grains of the doped tungsten wire with interlocking between grains along wire axial direction

关 键 词：退火温度 掺杂W-Re丝 钨合金 粉末冶金 

分 类 号：TF125.241[冶金工程—粉末冶金]