The influence of temperature and loading rate on flow and fracture of partially stabilized zirconia
The influence of temperature and loading rate on flow and fracture of partially stabilized zirconia
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温度和加载速率对部分稳定氧化锆流动和断裂的影响
DOI：
10.1007/bf00555898
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发表时间：
1985
影响因子：
4.5
通讯作者：
J. Lankford
中科院分区：
文献类型：
--
作者：
J. Lankford
镁稳定部分稳定氧化锆的流动和断裂行为受到压缩载荷的特点是在很宽的应变速率和温度范围。发现材料在23 ~ 1200° C范围内表现出塑性流动，并且流动应力曲线呈锯齿状。相反的结果为Al 2 O3，SiC和Si 3 N4，部分稳定的氧化锆（PSZ）的抗压强度的应变速率依赖性不相关的应力强度亚临界裂纹扩展速度的依赖性。这些结果，结合一个不寻常的类型的变形带的存在下，解释在塑性应变诱导，合作马氏体相变的亚稳沉淀物。
The flow and fracture behaviour of magnesium stabilized partially stabilized zirconia subject to compressive loading is characterized for a wide range of strain rates and temperatures. It is found that the material exhibits plastic flow from 23 to 1200° C, and that the flow stress curve is serrated. Contrary to results for Al2O3, SiC and Si3N4, the strain rate dependence of compressive strength for partially stabilized zirconia (PSZ) does not correlate with the stress intensity dependence of subcritical crack growth velocity. These results, combined with the presence of an unusual type of deformation banding, are interpreted in terms of plastic strain-induced, co-operative martensitic transformation of metastable precipitates.