In situ TEM observation of phase transformation in bulk metallic glass composites

Autor:	Huaping Sheng, Long Zhang, Haifeng Zhang, Jianbo Wang, Jürgen Eckert, Christoph Gammer
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	bulk metallic glass composites phase transformation stress redistribution shear band nucleation transmission electron microscopy Materials of engineering and construction. Mechanics of materials TA401-492
Zdroj:	Materials Research Letters, Vol 9, Iss 4, Pp 189-194 (2021)
Druh dokumentu:	article
ISSN:	2166-3831 21663831
DOI:	10.1080/21663831.2020.1867919
Popis:	Transformation-induced plasticity is a fundamental solution for improving the ductility of bulk metallic glass composites (BMGCs). However, the underlying mechanism remains controversial. Here, by using in situ transmission electron microscopy, we present direct observation of the transformation dynamics from β/ω phase to α’ phase of the crystalline dendrites in a TiZrCuBe BMGC under uniaxial tensile deformation. The transformation redistributes the stress in the adjacent matrix, making interfacial regions potential preferential sites for shear band nucleation. The high density of nucleation sites is believed to promote the formation of shear band networks and enhance the ductility of BMGCs.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/638b06dea7754126ae5f32e596e15167 Zobrazit plný text záznamu View record in DOAJ