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- Tsuchiya Koichi
- 物質・材料研究機構
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- Meng Fanqiang
- (現)アイオワ州立大学:物質・材料研究機構
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- Yokoyama Yoshihiko
- (現)Apple:東北大学金属材料研究所
Bibliographic Information
- Other Title
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- 高圧ねじり加工による金属ガラスの構造若返り(最近の研究から)
- 高圧ねじり加工による金属ガラスの構造若返り
- コウアツネジリ カコウ ニ ヨル キンゾク ガラス ノ コウゾウ ワカガエリ
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Abstract
Effect of high-pressure torsion (HPT) deformation on mechanical properties was investigated on Zr_<50>Cu_<40>Al_<10> bulk metallic glass by nanoindentation. HPT deformation resulted in the structural rejuvenation and pronounced decreases in hardness and elastic modulus. These changes were also accompanied by the transition of deformation mode from localized shear band formation to homogeneous deformation, as well as by a decrease in the frequency of pop-ins. Annealing of the deformed BMG led to the restoration of the localized deformation, hardness and elastic modulus; thus the transition is reversible. The observed reversible transition can be attributed to a change in the local atomic environment in the rejuvenated volume and the relaxed one.
Journal
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- Butsuri
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Butsuri 70 (7), 544-548, 2015-07-05
The Physical Society of Japan
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Details 詳細情報について
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- CRID
- 1390001288157698560
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- NII Article ID
- 110009970890
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- NII Book ID
- AN00196952
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- ISSN
- 24238872
- 00290181
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- NDL BIB ID
- 026564686
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed