ジルコニウム基バルク金属ガラスの熱塑性変形による常温引張ぜい性の改善

• 吉川 高正

  三重大学大学院工学研究科

• 山下 祐輝

  中外炉工業（株）

• 稲葉 忠司

  三重大学大学院工学研究科

• 徳田 正孝

  愛知工科大学工学部機械システム工学科

書誌事項

タイトル別名

• Development of Tensile Ductility of Zirconium-Based Bulk Metallic Glass at Room Temperature by Thermoplastic Deformation
• ジルコニウムキ バルク キンゾク ガラス ノ ネツ ソセイ ヘンケイ ニ ヨル ジョウオン ヒッパリゼイ セイ ノ カイゼン

抄録

Bulk metallic glass (BMG) is a kind of alloy with amorphous structure and it has better thermal stability because of its atomic composition. In particular, zirconium-based BMGs are expected to apply for structural materials, because they exhibit excellent mechanical properties, a high corrosion resistance, etc. BMGs exhibit a brittle fracture behavior caused by the rapid propagation of a shear band under tensile load at room temperature (RT). On the other hand, BMGs show the high formability due to very large plastic deformation under high temperature condition. And sometimes BMGs are crystallized by thermoplastic deformation even though its thermal condition is never beyond the time-temperature-transformation (TTT) curve of the material. When crystalline particles make the propagation of the shear band stop and deflect, such an effect can bring about an apparent inelastic strain under the tensile load at RT. <br>In this study, the development of the ductile property with the inelastic strain of Zr₅₅Cu₃₀Al₁₀Ni₅ BMG at RT was attempted by applying crystallization with thermoplastic deformation. The experimental results suggested that the thermoplastic deformation with strain rate of 2.0 × 10^-4s^-1 or 3.0 × 10^-3s^-1 can bring about the inelastic strain to Zr₅₅Cu₃₀Al₁₀Ni₅ BMG at RT under tensile loading by precipitating the crystalline particles in the material.

収録刊行物

• 材料

  材料 60 (6), 533-539, 2011

  公益社団法人 日本材料学会

キーワード

• Bulk metallic glass
• Thermoplastic deformation
• Tensile ductility
• Room temperature
• Crystalline phase

詳細情報

• CRID: 1390282680396726400
• NII論文ID: 130000861081
• NII書誌ID: AN00096175
• DOI: 10.2472/jsms.60.533
• ISSN: 18807488
• ISSN: 05145163
• NDL書誌ID: 11154712
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I11154712
• 本文言語コード: ja
• データソース種別:
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  • NDL
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  • KAKEN
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