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Related Experiment Video

Updated: Jul 19, 2025

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

Toughening oxide glasses through paracrystallization.

Hu Tang^1,2,3, Yong Cheng⁴, Xiaohong Yuan⁵

¹Bayerisches Geoinstitut, University of Bayreuth, Bayreuth, Germany. hutang@jlu.edu.cn.

Nature Materials

|August 7, 2023

Summary

This summary is machine-generated.

Researchers achieved exceptional toughening in oxide glasses by inducing paracrystallization. This novel method creates crystal-like clusters, significantly enhancing glass toughness and enabling damage-tolerant materials.

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Last Updated: Jul 19, 2025

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Area of Science:

Materials Science
Solid State Physics
Glass Science

Background:

Glasses lack the microstructural toughening mechanisms found in crystalline materials, limiting their applications.
Developing methods to toughen glasses without sacrificing other properties remains a significant challenge.

Purpose of the Study:

To investigate paracrystallization as a strategy for toughening oxide glasses.
To understand the structural origins of enhanced toughness in paracrystallized glasses.

Main Methods:

High-pressure and high-temperature treatment of aluminosilicate glass.
Experimental characterization of glass structure and mechanical properties.
Computational modeling to elucidate deformation mechanisms.

Main Results:

Achieved uniform formation of crystal-like medium-range order clusters via paracrystallization.
Demonstrated superior toughness in paracrystalline oxide glasses (1.99 ± 0.06 MPa·m^1/2).
Observed plastic deformation characteristics attributed to stress-induced inverse transformation and shear band excitation.

Conclusions:

Paracrystallization offers a potent strategy for designing highly damage-tolerant oxide glass materials.
Atomic-level structural variations, like paracrystallization, profoundly influence glass properties.
This approach overcomes intrinsic brittleness limitations of glasses.