{"title":"Effects of microstructure on the cracking behaviors in the lithium aluminosilicate glass ceramics: A statistical analysis","authors":"Ping Lu , Jingxi Chen , Yu Rao , Jialin Cui , Yinsheng Xu , Mengling Xia , Dong Wu , Guanchao Yin","doi":"10.1016/j.jnoncrysol.2025.123559","DOIUrl":null,"url":null,"abstract":"<div><div>The cracking behaviors of transparent glass ceramics have attracted much attention due to the application as a cover material for smartphones, and it is beneficial to fundamentally understand their origin. In this study, the cracks were induced by scratch and indentation, and their occurrence has been analyzed according to the Weibull’s statistical model. The roles of microstructure on the initiations and propagations of cracks were discussed in terms of modeling parameters, which provided hints for the cracking mechanisms. Overall, it was found that crystallization contributed to the formation of cracks, which seems to be inconsistent with the common sense that crystallites in glass ceramics hinder the cracking. According to the statistical analysis, the critical stress or load for crack initiation is suggested to drop due to the residual stress introduced by crystallization, while the crack propagation is still impeded by the crystalline phases and brings up the fracture toughness (K<sub>IC</sub>).</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"660 ","pages":"Article 123559"},"PeriodicalIF":3.5000,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Non-crystalline Solids","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022309325001747","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/4/23 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
Abstract
The cracking behaviors of transparent glass ceramics have attracted much attention due to the application as a cover material for smartphones, and it is beneficial to fundamentally understand their origin. In this study, the cracks were induced by scratch and indentation, and their occurrence has been analyzed according to the Weibull’s statistical model. The roles of microstructure on the initiations and propagations of cracks were discussed in terms of modeling parameters, which provided hints for the cracking mechanisms. Overall, it was found that crystallization contributed to the formation of cracks, which seems to be inconsistent with the common sense that crystallites in glass ceramics hinder the cracking. According to the statistical analysis, the critical stress or load for crack initiation is suggested to drop due to the residual stress introduced by crystallization, while the crack propagation is still impeded by the crystalline phases and brings up the fracture toughness (KIC).
期刊介绍：
The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid.
In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.
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