Effects of Residual Stress on Elastic Plastic Behavior of Metallic Glass Bolts Formed by Cold Thread Rolling
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- YAMANAKA Shigeru
- 株式会社丸エム製作所
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- AMIYA Kenji
- 東北大学金属材料研究所附属関西センター
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- SAOTOME Yasunori
- 東北大学金属材料研究所附属関西センター
Bibliographic Information
- Other Title
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- 転造加工により成形した金属ガラスボルトの弾塑性挙動に及ぼす残留応力の影響
- テンゾウカコウ ニ ヨリ セイケイ シタ キンゾク ガラスボルト ノ ダン ソセイ キョドウ ニ オヨボス ザンリュウ オウリョク ノ エイキョウ
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Abstract
Metallic glass (MG) has unique mechanical properties, combining high strength and low Young’s modulus. By applying MG to the fabrication of fastening bolts, high resistance against bolt loosening is expected. However, MG components are thought to be brittle because MG exhibits poor ductility when subjected to uniaxial loading at room temperature. We have developed hexagonal cap bolts made of zirconium-based MG by cold thread rolling. The MG bolt showed a 1.6% plastic strain with a tensile strength of more than 1550 MPa. In addition, the load-strain curve was similar to that of a strain hardening material although MG itself is free of strain hardening. In this study, we attempt to clarify the reasons for the behavior, which are advantageous for bolts in terms of toughness and reliability. Various experiments and numerical analysis indicate that residual stress plays an important role in the behavior.
Journal
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- Journal of the Japan Society for Technology of Plasticity
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Journal of the Japan Society for Technology of Plasticity 54 (628), 426-430, 2013
The Japan Society for Technology of Plasticity
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Keywords
Details 詳細情報について
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- CRID
- 1390001206499009536
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- NII Article ID
- 10031159281
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- NII Book ID
- AN00135062
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- COI
- 1:CAS:528:DC%2BC3sXht1SisL7J
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- ISSN
- 18820166
- 00381586
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- NDL BIB ID
- 024676770
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed