Abstract The discontinuous precipitation (DP) was known to mechanically detrimental mechanism compared to normal precipitation (continuous precipitation, CP), while the DP has the higher conductivity because of low solute content in matrix. To get the optimum balance of strength and conductivity, the bimodal-structured Cu-4Ni-1Si alloy composed of two regions with CPs and DPs was fabricated. Bimodal-structured alloy occupied by 50% of each region shows remarkable high strength and conductivity combination (1088 MPa / 38%IACS) beyond the expected values which summated in alloys with fully CP or DP. The accelerated strengthening of bimodal-structured alloy is caused by uni-directional alignment and enhanced plastic deformation of DPs in alloy after cold-working.

中文翻译：

---

含纳米纤维和正相析出物的双峰结构对铜镍硅合金力学和电学性能的影响

摘要 与正常沉淀（连续沉淀，CP）相比，不连续沉淀（DP）在机械上是有害的，而DP由于基质中溶质含量低而具有更高的电导率。为了获得强度和电导率的最佳平衡，制备了双峰结构的 Cu-4Ni-1Si 合金，该合金由具有 CP 和 DP 的两个区域组成。占每个区域 50% 的双峰结构合金显示出显着的高强度和电导率组合 (1088 MPa / 38% IACS)，超出了具有完全 CP 或 DP 的合金的预期值。双峰结构合金的加速强化是由冷加工后合金中DPs的单向排列和增强的塑性变形引起的。