Local structure and hardness change of Zr50Cu40Al10 bulk glassy alloy after heavy ion irradiation

被引：8

作者：

Onodera, Naoto ^{[1
]}

Ishii, Akito ^{[1
]}

Fukumoto, Yuka ^{[1
]}

Iwase, Akihiro ^{[1
]}

Yokoyama, Yoshihiko ^{[2
]}

Hori, Fuminobu ^{[1
]}

机构：

[1] Osaka Prefecture Univ, Dept Mat Sci, Naka Ku, Sakai, Osaka 5998531, Japan

[2] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2012年 / 282卷

关键词：

MECHANICAL-PROPERTIES; CRYSTALLIZATION;

D O I：

10.1016/j.nimb.2011.08.049

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Zr50Cu40Al10 bulk glassy alloys before and after 200 MeV Xe ion irradiation with a maximum dose of about 1 x 10(14) ions/cm(2) and 5 MeV Al ion ("self-ion") irradiation with a dose of about 3 x 10(14) ions/cm(2) have been investigated by positron annihilation and micro-Vickers hardness measurements. No crystallization took place in the samples after the irradiation according to X-ray diffraction measurement. We found that the hardness decreases by irradiation with increasing the irradiation dose. A decreasing trend of positron lifetime, which reflects the size of free volume, was observed. These facts imply that heavy ion irradiation can be used for the local modification of hardness, which is not thermal effect, in Zr50Cu40Al10 bulk glassy alloy. (C) 2011 Elsevier B.V. All rights reserved.

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页数：3

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