Is there hidden structural inhomogeneity in Zr-based bulk metallic glasses?

Osami Haruyama; Hiroyuki Sawada; Kazuhiro Yoshikawa; Yoshihiko Yokoyama

doi:10.2497/jjspm.59.57

Is there hidden structural inhomogeneity in Zr-based bulk metallic glasses?

Osami Haruyama, Hiroyuki Sawada, Kazuhiro Yoshikawa, Yoshihiko Yokoyama

Institute for Materials Research (IMR)

Research output: Contribution to journal › Article › peer-review

Abstract

The inhomogeneous character of structural relaxation in Zr-based bulk metallic glass (BMG) was investigated from both aspects of the fine structure of free volume, i.e. like the identification of n-, p-type defects, and the chemical short-range order (CSRO) induced by thermal treatment. At least within volume relaxation used in the present study the fine structure of free volume could not be detected. On the other hand, the CSRO process was confirmed to take place in a Zr₅₀Cu₄₀Al₁₀ BMG by electrical resistance experiments. Although the fine structure of free volume could not be observed in the present glass, the existence of the CSRO process suggests any structural inhomegeneity in BMGs.

Original language	English
Pages (from-to)	57-62
Number of pages	6
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	59
Issue number	2
DOIs	https://doi.org/10.2497/jjspm.59.57
Publication status	Published - 2012 Feb 1

Keywords

CSRO process
Free volume
Structural relaxation
TSRO process
Volume relaxation

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.2497/jjspm.59.57

Cite this

@article{7186c5872e5041d0bc2d660473e32d36,

title = "Is there hidden structural inhomogeneity in Zr-based bulk metallic glasses?",

abstract = "The inhomogeneous character of structural relaxation in Zr-based bulk metallic glass (BMG) was investigated from both aspects of the fine structure of free volume, i.e. like the identification of n-, p-type defects, and the chemical short-range order (CSRO) induced by thermal treatment. At least within volume relaxation used in the present study the fine structure of free volume could not be detected. On the other hand, the CSRO process was confirmed to take place in a Zr50Cu40Al10 BMG by electrical resistance experiments. Although the fine structure of free volume could not be observed in the present glass, the existence of the CSRO process suggests any structural inhomegeneity in BMGs.",

keywords = "CSRO process, Free volume, Structural relaxation, TSRO process, Volume relaxation",

author = "Osami Haruyama and Hiroyuki Sawada and Kazuhiro Yoshikawa and Yoshihiko Yokoyama",

year = "2012",

month = feb,

day = "1",

doi = "10.2497/jjspm.59.57",

language = "English",

volume = "59",

pages = "57--62",

journal = "Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy",

issn = "0532-8799",