Orientation-dependent solid solution strengthening was explored through a combined microtexture plus nanoindentation study. Pure zirconium (6N purity crystal-bar Zr) and commercial Zircaloy-2 were investigated for comparison. Local mechanical properties were estimated through finite element (FE) simulations of the unloading part of the nanoindentation load–displacement response. Combinations of ‘averaging’ scheme and constitutive relationship were used to resolve uncertainty of FE-extracted mechanical properties. Comparing the two grades, non-basal oriented grains showed an overall hardening and increase in elastic modulus. In contrast, insignificant change was observed for basal (or near-basal) oriented grains. The strengthening of non-basal orientations appeared via elimination of the lowest hardness/stiffness values without a shift in the peak value. Such asymmetric development brought out the clear picture of orientation-dependent solid solution strengthening in zirconium.

中文翻译：

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锆中取向相关的固溶强化：​​纳米压痕研究

通过结合微观纹理和纳米压痕研究探索了依赖于取向的固溶体强化。研究了纯锆（6N 纯度晶棒 Zr）和商用 Zircaloy-2 以进行比较。通过纳米压痕载荷-位移响应的卸载部分的有限元 (FE) 模拟来估计局部机械性能。“平均”方案和本构关系的组合用于解决有限元提取机械性能的不确定性。比较这两个等级，非基面取向晶粒显示整体硬化和弹性模量增加。相比之下，对于基底（或接近基底）取向的晶粒观察到微不足道的变化。非基础取向的强化是通过消除最低硬度/刚度值而没有峰值偏移。这种不对称的发展清楚地表明了锆中依赖于取向的固溶强化。