Related Experiment Video
Updated: Jul 16, 2025

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Transmission electron microscopy study on the phase transformation of metastable precipitates to stable phases
1Graduate Institute of Ferrous and Eco Materials Technology, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk 37-673, Republic of Korea.
Abstract:
Nanosized precipitates play a critical role in increasing the strength of metallic alloys. There are many reports that the initial precipitates are metastable phases holding a different composition and crystal structure from the equilibrium precipitate. The metastable precipitate transforms to its stable phase during heat treatment. A transmission electron microscope enables researchers to study the phase transition of metastable precipitates to stable phases due to its fine resolution in identifying crystal structures and chemical compositions. This review introduces the various phase transformation mechanisms of metastable precipitates to stable phases obtained from the analysis using a transmission electron microscope. The role of dislocation movement in the phase transition is further discussed.
More Related Videos
Related Concept Videos
Transmission Electron Microscopy
Washing, Drying, and Ignition of Precipitates
Phase Transitions: Sublimation and Deposition
Colloidal precipitates
Phase Transitions: Melting and Freezing
Electron Microscope Tomography and Single-particle Reconstruction
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...

