A novel prediction model for temperature-stress dependent creep rupture life in structural ceramics

被引：0

作者：

Yang, Jiabin ^{[1
,2
]}

Ma, Yanli ^{[2
]}

Li, Ziyuan ^{[2
]}

Wei, Tianqi ^{[2
]}

Shi, Tianzi ^{[2
]}

Zhang, Feilong ^{[2
]}

Li, Weiguo ^{[1
,2
]}

Qu, Zhaoliang ^{[3
]}

机构：

[1] Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China

[2] Chongqing Univ, Coll Aerosp Engn, Chongqing 400044, Peoples R China

[3] Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2025年 / 45卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Creep rupture life; Temperature-stress dependence; Prediction model; Structural ceramics; SINTERED SILICON-NITRIDE; TENSILE CREEP; MECHANICAL-BEHAVIOR; FAILURE MECHANISMS; FATIGUE BEHAVIOR; DEGREES-C; STRENGTH; FRACTURE; COMPOSITES; FIBER;

D O I：

10.1016/j.jeurceramsoc.2025.117188

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, based on the Force-Heat equivalence energy density principle and incorporating the theory of dissipated power, a theoretical model has been developed to predict the creep rupture life of structural ceramics. The novelty of this work lies in proposing a critical energy density for the creep rupture of structural ceramics under various temperature-stress combinations, and the life prediction model developed on this basis does not contain any adjustable fitting parameters. The theoretical model has been well verified by a large number of experimental results. Moreover, the model analysis indicates that increasing the fast-fracture strength of structural ceramics is beneficial for enhancing their resistance to creep, with this enhancement being more pronounced at high stress levels or elevated temperatures. This work contributes to a deeper understanding of the performance and reliability of structural ceramic materials throughout their service life under operating temperature conditions.

引用

页数：18

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