In Situ Scattering Studies of Crystallization Kinetics in a Phase-Separated Zr–Cu–Fe–Al Bulk Metallic Glass

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Sinan Liu
  • Jiacheng Ge
  • Huiqaing Ying
  • Dong Ma
  • Xiaobing Zuo
  • Tao Feng
  • Jun Shen
  • Horst Hahn
  • Si Lan

Detail(s)

Original languageEnglish
Journal / PublicationActa Metallurgica Sinica (English Letters)
Online published25 Aug 2021
Publication statusOnline published - 25 Aug 2021

Abstract

Thermal stability and the crystallization kinetics of a phase-separated Zr–Cu–Fe–Al bulk metallic glass were investigated using in situ high-energy synchrotron X-ray and neutron diffraction, as well as small-angle synchrotron X-ray scattering. It was revealed that this glass with excellent glass-forming ability possesses a two-step crystallization behavior. The crystalline products and their evolution sequence are more complicated than a homogeneous Zr–Cu–Al glass with average glass-forming ability. The experimental results indicate that a finely distributed nanometer-sized cubic Zr2Cu phase forms first and then transforms to a tetragonal Zr2Cu phase, while the matrix transforms to an orthorhombic Zr3Fe phase. The strength of the Zr–Cu–Fe–Al composite containing cubic Zr2Cu phase and glass matrix increases, and the plasticity also improves compared to the as-cast Zr–Cu–Fe–Al bulk metallic glass. Our results suggest that the formation of multiple and complex crystalline products would be the characteristics of the Zr–Cu–Fe–Al glass with better glass-forming ability. Our study may shed light on the synthesis of bulk-sized glass–nanocrystals composites of high strength and good plasticity.

Research Area(s)

  • Bulk metallic glass, Crystallization kinetics, Phase separation, Synchrotron and neutron scattering

Citation Format(s)

In Situ Scattering Studies of Crystallization Kinetics in a Phase-Separated Zr–Cu–Fe–Al Bulk Metallic Glass. / Liu, Sinan; Ge, Jiacheng; Ying, Huiqaing; Lu, Chenyu; Ma, Dong; Wang, Xun-Li; Zuo, Xiaobing; Ren, Yang; Feng, Tao; Shen, Jun; Hahn, Horst; Lan, Si.

In: Acta Metallurgica Sinica (English Letters), 25.08.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review