Preparation of super-strong ZrO2 ceramics using dynamic hot forging

被引：31
作者：
Liu, Dianguang [1 ]
Fan, Jianye [1 ]
Zhao, Ke [2 ]
Liu, Jinling [2 ]
An, Linan [3 ]
机构：
[1] Southwest Jiaotong Univ, Sch Mat Sci & Engn, Chengdu 610031, Sichuan, Peoples R China
[2] Southwest Jiaotong Univ, Sch Mech & Aerosp Engn, Chengdu 610031, Sichuan, Peoples R China
[3] Dongguan Univ Technol, Sch Mech Engn, Dongguan, Guangdong, Peoples R China
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2023年 / 43卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Zirconia; Dynamic hot forging; Strengthening; Grain boundary sliding; Work hardening; YTTRIA-STABILIZED ZIRCONIA; MECHANICAL-PROPERTIES; OSCILLATORY PRESSURE; PLASTIC-DEFORMATION; FRACTURE-TOUGHNESS; GRAIN-GROWTH; MICROSTRUCTURE; BEHAVIOR;
D O I：
10.1016/j.jeurceramsoc.2022.10.004
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this study, dynamic hot forging (DHF) was proposed and applied to make super-strong zirconia (ZrO2) ceramics. The flexural strength of the sample forged at 1400 & DEG;C reached 1860 MPa, which was more than 3 times higher than that of the unforged commercial zirconia ceramics and 120 MPa higher than the conventional hot forged zirconia ceramics. The microstructural analysis suggested that the anomalously high strength is due to grain boundary strengthening caused by grain boundary sliding and grain strengthening caused by work hardening. It is anticipated that DHF could be applicable to other material systems to make super-strong materials.
引用
收藏
页码：733 / 737
页数：5
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