Intrinsic nanoscale inhomonegeity in metallic glass and its relation to mechanical properties

金属玻璃固有的纳米级不均匀性及其与机械性能的关系

• 批准号: 22360263
• 负责人: KATO Hidemi
• 金额: $ 12.23万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22360263/
• 关键词: 金属ガラス; 緩和; ガラス遷移; 内部摩擦; 力学物性; 金属物性; クリープ回復; フラジリティ; 破壊靭性; 構造緩和

Strong relationship among fragility (= temperature dependence of viscosity in supercooled liquid state, magnitude of the slow beta relaxation and nanoscale inhomogeneity in metallic glasses is confirmed by investigating relaxation behavior of Pd- and Zr-based alloys. By HAADF-STEM observation, it is newly found that Ar atom can be frozen in weakly bonded region of metallic glass by low energy Ar ion implantation. By analyzing dependence of size and distribution of the frozen Ar nanoparticles on the alloy system and thermal history, we can understand the nanoscale inhomogeneity in metallic glass more clearly.

通过研究钯基和锆基合金的弛豫行为，证实了金属玻璃的脆性（=过冷液态粘度的温度依赖性）、慢β弛豫大小和纳米尺度非均匀性之间的密切关系。通过HAADF-STEM观察，新发现低能Ar离子注入可使Ar原子在金属玻璃的弱键区冻结。通过分析冻结Ar纳米粒子的尺寸和分布与合金体系和热历史的关系，可以更清楚地了解金属玻璃中纳米尺度的不均匀性。

项目成果

PdNiCuP金属ガラスの動的緩和と擬弾性挙動

PdNiCuP金属玻璃的动态弛豫和伪弹性行为

• 发表时间: 2012
• 作者: 井上泰志;高井治;加藤秀実
• 通讯作者: 加藤秀実

Dynamic Study of Primary and Secondary Relaxations in Pd-Ni-Cu-P Glass

Pd-Ni-Cu-P 玻璃一次和二次弛豫的动态研究

• 发表时间: 2012
• 作者: H. Kato;H;Wang;T. Ichitsubo
• 通讯作者: T. Ichitsubo

金属ガラスの緩和現象

金属玻璃的弛豫现象

• 发表时间: 2011
• 作者: E.Wada;K.Watanabe;Y.Shirahata;M.Itoh;M.Yamaguchi;T.Taniyama;加藤秀実
• 通讯作者: 加藤秀実

A partial structure factor investigation of thebulk metallic glass Zr63Ni25Al12 as studied by using a combination of anomalous X-ray scattering and reverse Monte Carlo modeling

采用反常 X 射线散射和逆蒙特卡罗建模相结合的方法研究大块金属玻璃 Zr63Ni25Al12 的部分结构因子

• DOI: 10.3139/146.110774
• 发表时间: 2012
• 期刊: INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
• 影响因子: 0.8
• 作者: Hosokawa;S; Berar;JF; Boudet;N; Kohara;S; Pilgrim;WC; Joester;M; Stellhorn;J; Zeidler;A; Maruyama;K; Nasu;T; Zhang;W; Kato;H
• 通讯作者: H

Correlation between the enhanced plasticity of glassy matrix composites and the intrinsic mechanical property of reinforcement

玻璃基复合材料的增强塑性与增强体固有力学性能之间的相关性

• DOI: 10.1016/j.msea.2012.08.118
• 发表时间: 2013-01
• 期刊: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing
• 影响因子: 6.4
• 作者: Guangyin Yuan;Guoqiang Xie;Chen Lu;Wenjiang Ding
• 通讯作者: Wenjiang Ding