...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Anisotropy of the mechanical properties and features of the tetragonal to monoclinic transition in partially stabilized zirconia crystals
【24h】

Anisotropy of the mechanical properties and features of the tetragonal to monoclinic transition in partially stabilized zirconia crystals

机译：四边形到单岩晶体四边形转变的机械性能和特征的各向异性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We have studied the structure, phase composition and mechanical properties, e.g. microherdness and impact toughness of partially stabilized zirconia crystals in the 2-4 mol.% stabilizing yttria concentration range. We have shown that with increasing concentration of stabilizing yttria the microhardness increases while the impact fracture toughness varies nonmonotonically and reaches the maximum for the partially stabilized zirconia crystal with 3 mol.% Y2O3. The anisotropy of the microhardness and impact fracture toughness was studied for wafers perpendicular to the < 100 >, < 110 > and < 111 > directions with different indenter diagonal orientations. We have shown that the microhardness of the partially stabilized zirconia crystals depends but slightly on crystallographic orientation whereas the impact fracture toughness differs between crystallographic faces of the crystals. The highest impact toughness was obtained for the {100} plane and the indenter diagonal aligned parallel to the < 100 > direction, while the lowest impact toughness was obtained for the {110} plane and the indenter diagonal aligned parallel to the < 110 > direction. Local Raman study of the monoclinic phase distribution in the vicinity of the indentation shows that the maximum quantity of the monoclinic phase forms along the < 110 > direction regardless of indenter diagonal orientation. We have shown that the strain anisotropy during the phase transition has variable effect on crack impedance. The effect of transformation hardening mechanism depends on crack plane orientation and transition induced stress. (C) 2019 Elsevier B.V. All rights reserved.
机译：我们研究了结构，相组成和机械特性，例如microherdness并在2-4摩尔％的氧化钇稳定化的浓度范围部分稳定氧化锆晶体的冲击韧性。我们已经表明，与而冲击断裂韧性nonmonotonically变化，并且达到与3摩尔％Y 2 O 3的部分稳定的氧化锆晶体的最大增加稳定氧化钇显微硬度增加的浓度。显微硬度和冲击断裂韧性的各向异性进行了研究的晶片在垂直于<100>，<110>和<111>具有不同压头对角方向的方向。我们已经表明，部分稳定的氧化锆晶体的显微硬度取决于但略微上结晶取向，而晶体的晶体表面之间的冲击断裂韧性不同。对于{100}面和平行于所述<100>方向上的压头对角获得的最高冲击韧性，而是为{110}面和平行于所述<110>方向上的压头对角获得的最低冲击韧性。在的缩进显示附近那的单斜晶相形成沿<110>方向上的最大数量无论压头对角线取向的单斜晶相分布的本地拉曼研究。我们已经表明，在相变过程中的应变的各向异性对裂缝阻抗可变效应。的相变硬化机理的影响取决于裂缝面取向和过渡引起的应力。 （c）2019 Elsevier B.v.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号