抗弯强度
氧化钇稳定氧化锆
材料科学
锻造
立方氧化锆
陶瓷
复合材料
冶金
作者
Jianye Fan,Ke Zhao,Jinling Liu,Dianguang Liu,Linan An
摘要
Abstract High‐performance zirconia ceramics were prepared by dynamic sinter forging (DSF). The effects of sintering temperature on the microstructure and mechanical properties of the samples are investigated. The results show that the flexural strength and toughness of the samples prepared at 1550°C reached 1950 MPa and 7.1 MPa∙m 1/2 , respectively, with the flexural strength representing an exceptionally high value. The microstructural analysis shows that the DSF‐made samples exhibited the following unique features: very thin grain boundaries, high‐density dislocations, and great phase transformation capability upon external loading. These features are likely due to the reciprocating grain‐boundary sliding during sinter forging. The excellent mechanical properties of the DSF‐made samples are mainly due to the grain boundary strengthening, strain hardening, and phase transformation toughening. The development of DSF opens up a new path for the preparation of high‐performance ceramics.
科研通智能强力驱动
Strongly Powered by AbleSci AI