The elastic-plastic properties of mesoscale electrodeposited LIGA Ni alloy specimens are investigated as a function of specimen size, strain rate, and material composition. Two material compositions are studied: a high-strength fine-grained Ni-Fe alloy and a high-ductility coarse-grained Ni-Co alloy. The specimens have thicknesses of approximately 200 μm and gauge widths ranging from 75 μm to 700 μm. Tensile tests are conducted at strain rates of 0.001/s and 1/s using tabletop loading apparatuses and digital image correlation (DIC) for strain measurement. For each test condition, the apparent Young’s modulus, yield strength, ultimate tensile strength, and strain hardening exponent and strength coefficient are extracted from the tensile tests. The true strains to failure are also assessed from fractography. Size, rate, and composition effects are discussed. For most properties, the statistical scatter represented by the standard deviation exceeds the measurement uncertainty; the notable exceptions to these observations are the apparent Young’s modulus and yield strength, where large measurement uncertainties are ascribed to common experimental factors and material microplasticity.

中尺度电沉积 LIGA Ni 合金试样的弹塑性性能作为试样尺寸、应变率和材料成分的函数进行了研究。研究了两种材料成分：高强度细晶粒 Ni-Fe 合金和高延展性粗晶粒 Ni-Co 合金。样品具有大约200的厚度μ从75米和宽度规μ m至700 μ米。使用桌面加载装置和用于应变测量的数字图像相关 (DIC) 以 0.001/s 和 1/s 的应变速率进行拉伸测试。对于每个测试条件，从拉伸测试中提取表观杨氏模量、屈服强度、极限拉伸强度和应变硬化指数和强度系数。断裂的真实应变也可以通过断口分析来评估。讨论了大小、比率和组成效应。对于大多数属性，标准偏差所代表的统计散布超过了测量不确定度；这些观察结果的显着例外是表观杨氏模量和屈服强度，其中较大的测量不确定性归因于常见的实验因素和材料微塑性。