skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: In-situ observation of an unusual phase transformation pathway with Guinier-Preston zone-like precipitates in Zr-based bulk metallic glasses

Abstract

The pathway of amorphous-to-crystalline phase transformation in Zr52.5Cu17.9Ni14.6Al10Ti5 bulk metallic glasses was studied using a suite of in-situ techniques. Multi-scale structure evidence reveals a five-stage pathway, analogous to the non-equilibrium transformation process with Guinier-Preston zones during aging in precipitation-hardened alloys, by the following sequence upon isothermal annealing the alloy in the supercooled liquid region: polyamorphous phase transition, chemical phase separation, the formation of a poorly-ordered metastable phase, and the formation of a final crystalline product. The changeable incubation periods at different annealing temperatures, and the abrupt multi-scale structure changes, as well as a latent heat release in the calorimetric measurements, support the first-order nature of the phase transformation at early stages. The structure evolution in real-space indicates that the enhancement of cluster connectivity on the medium-range scale plays essential roles in the early stages of the phase transformation, while the interface-limited ordering dominates the later stages. The experimental results suggest the phase transformation pathway with "Guinier-Preston zone-like" precipitates accompanied by the kinematic development of core-shell structures of diffuse interfaces with order parameters gradients, enabling the step-by-step decrease of free energy of the alloy system during phase transformation, which might be a universal behavior for alloys with excellent glass-forming ability.

Authors:
 [1];  [1]; ORCiD logo [2];  [1];  [3];  [4];  [1];  [4]; ORCiD logo [5];  [6];  [6]; ORCiD logo [4]
  1. Nanjing Univ. of Science and Technology (China). Herbert Gleiter Inst. of Nanoscience, School of Materials Science and Engineering
  2. Chinese Academy of Sciences (CAS), Dongguan (China). China Spallation Neutron Source, Branch, Inst. of High Energy Physics
  3. Nanjing Univ. of Aeronautics and Astronautics (China). College of Materials Science and Technology
  4. City Univ. of Hong Kong (China)
  5. Nanjing Univ. of Science and Technology (China). Herbert Gleiter Inst. of Nanoscience, School of Materials Science and Engineering; City Univ. of Hong Kong (China)
  6. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
Contributing Org.:
Research Grants Council (RGC) of Hong Kong; National Natural Science Foundation of China; National Natural Science Foundation of Jiangsu Province; Fundamental Research Funds for the Central Universities
OSTI Identifier:
1601430
Alternate Identifier(s):
OSTI ID: 1702830
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Alloys and Compounds
Additional Journal Information:
Journal Volume: 819; Journal Issue: C; Journal ID: ISSN 0925-8388
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Guinier-Preston zone; bulk metallic glasses; electron microscopy; neutron scattering; phase transformations pathway; synchrotron

Citation Formats

Dong, Weixia, Ge, Jiacheng, Ke, Yubin, Ying, Huiqiang, Zhu, Li, He, Haiyan, Liu, Sinan, Lu, Chenyu, Lan, Si, Almer, Jon, Ren, Yang, and Wang, Xun-Li. In-situ observation of an unusual phase transformation pathway with Guinier-Preston zone-like precipitates in Zr-based bulk metallic glasses. United States: N. p., 2019. Web. https://doi.org/10.1016/j.jallcom.2019.153049.
Dong, Weixia, Ge, Jiacheng, Ke, Yubin, Ying, Huiqiang, Zhu, Li, He, Haiyan, Liu, Sinan, Lu, Chenyu, Lan, Si, Almer, Jon, Ren, Yang, & Wang, Xun-Li. In-situ observation of an unusual phase transformation pathway with Guinier-Preston zone-like precipitates in Zr-based bulk metallic glasses. United States. https://doi.org/10.1016/j.jallcom.2019.153049
Dong, Weixia, Ge, Jiacheng, Ke, Yubin, Ying, Huiqiang, Zhu, Li, He, Haiyan, Liu, Sinan, Lu, Chenyu, Lan, Si, Almer, Jon, Ren, Yang, and Wang, Xun-Li. Sat . "In-situ observation of an unusual phase transformation pathway with Guinier-Preston zone-like precipitates in Zr-based bulk metallic glasses". United States. https://doi.org/10.1016/j.jallcom.2019.153049. https://www.osti.gov/servlets/purl/1601430.
@article{osti_1601430,
title = {In-situ observation of an unusual phase transformation pathway with Guinier-Preston zone-like precipitates in Zr-based bulk metallic glasses},
author = {Dong, Weixia and Ge, Jiacheng and Ke, Yubin and Ying, Huiqiang and Zhu, Li and He, Haiyan and Liu, Sinan and Lu, Chenyu and Lan, Si and Almer, Jon and Ren, Yang and Wang, Xun-Li},
abstractNote = {The pathway of amorphous-to-crystalline phase transformation in Zr52.5Cu17.9Ni14.6Al10Ti5 bulk metallic glasses was studied using a suite of in-situ techniques. Multi-scale structure evidence reveals a five-stage pathway, analogous to the non-equilibrium transformation process with Guinier-Preston zones during aging in precipitation-hardened alloys, by the following sequence upon isothermal annealing the alloy in the supercooled liquid region: polyamorphous phase transition, chemical phase separation, the formation of a poorly-ordered metastable phase, and the formation of a final crystalline product. The changeable incubation periods at different annealing temperatures, and the abrupt multi-scale structure changes, as well as a latent heat release in the calorimetric measurements, support the first-order nature of the phase transformation at early stages. The structure evolution in real-space indicates that the enhancement of cluster connectivity on the medium-range scale plays essential roles in the early stages of the phase transformation, while the interface-limited ordering dominates the later stages. The experimental results suggest the phase transformation pathway with "Guinier-Preston zone-like" precipitates accompanied by the kinematic development of core-shell structures of diffuse interfaces with order parameters gradients, enabling the step-by-step decrease of free energy of the alloy system during phase transformation, which might be a universal behavior for alloys with excellent glass-forming ability.},
doi = {10.1016/j.jallcom.2019.153049},
journal = {Journal of Alloys and Compounds},
number = C,
volume = 819,
place = {United States},
year = {2019},
month = {11}
}