Los Alamos National Laboratory, Los Alamos, NM 87544, USA.
J Phys Condens Matter. 2011 Mar 30;23(12):125402. doi: 10.1088/0953-8984/23/12/125402. Epub 2011 Mar 9.
Static high pressure diamond anvil cell experiments were performed on three polycrystalline Zr samples having varying interstitial impurity concentrations. Systematic increase in transition pressure with the increase in the amount of interstitial impurities is observed for the martensitic α →ω structural phase transition in Zr. Significant room temperature crystal grain growth is also observed for the two highest purity samples at the α →ω transition. In the case of the lowest purity sample interstitial impurities obstruct the α →ω transition, while possibly helping impede grain growth-even as the sample is heated to 1279 K.
对具有不同间隙杂质浓度的三种多晶 Zr 样品进行了静态高压金刚石砧细胞实验。在 Zr 的马氏体α→ω结构相变中，观察到过渡压力随间隙杂质数量的增加而系统增加。在α→ω转变时，对于两个纯度最高的样品，也观察到显著的室温晶粒生长。对于最低纯度的样品，间隙杂质阻碍了α→ω转变，尽管可能有助于阻碍晶粒生长，即使样品被加热到 1279 K。
