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.

金属非晶合金（MGA）和纳米晶合金（NCA）是一种具有超高强度、高塑性和超高强度的合金。在过冷液体粘度大于108 Pa·s，纳米准晶在过冷液体中析出时，MGA表现出约0.3%的塑性应变的加工硬化和约0.7%的塑性应变的加工软化，并伴有明显的锯齿状组织，而不降低抗拉强度。NCA表明，在Ni 14-18原子%的组成中，通过控制试样的表面粗糙度，在总应变为3-5%的条件下，试样的塑性应变约为0.5- 3%。

项目成果

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

電界析出Ni-Wナノ結晶およびアモルファス合金の引張破懐挙動に及ぼす膜厚の影響

膜厚对场沉积Ni-W纳米晶和非晶合金拉伸断裂行为的影响

• 发表时间: 2012
• 作者: 山本卓;長岡健太;藤田和孝;高島佐衣;山崎徹
• 通讯作者: 山崎徹

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

Zr基バルク金属ガラスのねじり応力下における変形破壊挙動

扭转应力下锆基大块金属玻璃的变形与断裂行为

• 发表时间: 2014
• 作者: Y.Kinoshita;など;西川裕之，平田輝， 木原好昭，藤田和孝，横山嘉彦，加藤秀実
• 通讯作者: 西川裕之，平田輝， 木原好昭，藤田和孝，横山嘉彦，加藤秀実

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