【摘要】 对铜中添加铌的不同组份Ｃｕ－Ｎｂ铸锭的冷加工性及经不同冷拉拔比（ε）Ｃｕ－Ｎｂ复合体的抗拉强度（σｂ、σ０．２）与导电性能等方面进行了研究。试验结果表明：在含Ｎｂ量＜２０Ｖｏｌ．％的Ｃｕ－Ｎｂ铸锭，其塑性优良，可进行冷加工；当冷拉拔比为６时，Ｃｕ－１８Ｖｏｌ．％Ｎｂ和Ｃｕ－２０ｖｏｌ．％Ｎｂ两种复合体的极限强度与屈服强度分别达７００～８００ＭＰａ和６００～７００ＭＰａ；其导电率约为无氧铜的２／３。用金相显微镜观察了Ｃｕ－Ｎｂ复合体的显微组织。文中还对与Ｃｕ－Ｎｂ复合材料的性能有关的问题进行了讨论。更多还原

【Abstract】 The effects of additional Nb quantity on cold workability and drawing ratio (ε=1nAi/Af, A i, initialcross-section; Af final cross-section) on tensile properties in Cu-Nb corn posites have been studied. The experimental results show that the Cu-Nb composites with Nb≤20vol.% can be worked at room tern perature, and the ultimate strength and the cond uctivity of cold worked Cu-Nb composites were≥700～800M Pa (ε=6) and above two thirds of Oxygen-free copper, respectively. The microstructures are observed for the strengthening Cu-Nb composites. In addition, some aspects on the properties of Cu-Nb Composite are also discussed in this paper.更多还原