Synthesis of Ultra-High Strength and High Toughness Next-Generation Metallic Structure Materials with Nano Structure and Research of the Deformation and Strengthening Mechanisms

纳米结构超高强高韧下一代金属结构材料的合成及变形强化机理研究

• 批准号: 22246015
• 负责人: FUJITA Kazutaka
• 金额: $ 30.53万
• 依托单位: Ube National College of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22246015/
• 关键词: 金属ガラス; ナノ結晶合金; アモルファス合金; 引張塑性変形; 加工硬化; 靭性; 熱的構造安定性; フラクトグラフィ

On the metallic glassy alloy (MGA) and nanocrystalline alloy (NCA) which show ultra-high strength, the high ductility together with the ultra-high strength were intended. In addition, the deformation and strengthening mechanisms were investigated.The MGA, that the supercooled liquid viscosity shows more than 10 8 Pa sec and the nano-quasicrystals precipitate in the supercooled liquid, showed work hardening with about 0.3% plastic strain and successively work softening accompanied by clear serrations with about 0.7% plastic strain without decreasing the tensile strength. The NCA showed that tensile strengths in the composition of the Ni 14-18 at.% W were achieved to about 3 GPa with the total strains of 3-5% containing the large plastic strain of about 0.5-3 % by the specimen surface roughness controlled by the Cu-substrate roughness.

在表现出超高强度的金属玻璃合金（MGA）和纳米晶合金（NCA）上，期望同时具有高延展性和超高强度。此外，还研究了变形和强化机制。MGA的过冷液体粘度超过10 8 Pa·sec，并且纳米准晶在过冷液体中析出，表现出约0.3%塑性应变的加工硬化，并随后出现加工软化。伴有清晰的锯齿，塑性应变约为 0.7%，且不降低拉伸强度。 NCA 显示，根据样品表面粗糙度，Ni 14-18 at.% W 成分中的拉伸强度达到约 3 GPa，总应变为 3-5%，其中包含约 0.5-3% 的大塑性应变由铜基体粗糙度控制。

项目成果

Work Hardening of High Strength Nanocrystalline Ni-W Alloys

高强度纳米晶镍钨合金的加工硬化

• 发表时间: 2012
• 作者: 山田一輝;上田光敏;河村憲一;丸山俊夫;T. Yamasaki and K. Fujita
• 通讯作者: T. Yamasaki and K. Fujita

Mechanisms of Tensile Plastic Deformation in Zr70Ni16Cu6Al8 Bulk Metallic Glass

Zr70Ni16Cu6Al8块体金属玻璃拉伸塑性变形机理

• 发表时间: 2011
• 期刊: J. Japan Inst. Metals
• 作者: H.Tokunaga;J.Koyama;K.Fujita;Y. Yokoyama;T.Yamasaki and A. Inoue
• 通讯作者: T.Yamasaki and A. Inoue

Tensile plastic deformation with work hardening and serrations on high viscosity monolithic Zr-based bulk metallic glass

高粘度整体锆基大块金属玻璃的拉伸塑性变形、加工硬化和锯齿

• 发表时间: 2014
• 作者: K. Fujita;M. Yamada;H. Ariyoshi;Y. Yokoyama and T. Yamasaki
• 通讯作者: Y. Yokoyama and T. Yamasaki

Shear Properties in Zr-Based Bulk Metallic Glass

锆基块体金属玻璃的剪切性能

• 发表时间: 2011
• 作者: Y.Kihara;K.Fujita;Y.Yokoyama;A.Inoue
• 通讯作者: A.Inoue

Compressive deformation of Zr-Cu-Ni-Al-(Pd, Pt, Au or Ag)

Zr-Cu-Ni-Al-(Pd、Pt、Au 或 Ag) 的压缩变形

• 发表时间: 2012
• 作者: M. Yamada;H. Ogino;Y. Yokoyama and T. Yamasaki
• 通讯作者: Y. Yokoyama and T. Yamasaki