Synthesis of large-size nanocrystal-toughened Cu-based bulk metallic glasses with excellent plasticity by controlling solidification

控制凝固合成大尺寸纳米晶增韧铜基大块金属玻璃

• 批准号: 19560689
• 负责人: ZHANG Wei
• 金额: $ 2.83万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19560689/
• 关键词: 複合延性; 金属ガラス; 銅基金属ガラス; 凝固制御法; 大寸法; ナノ結晶粒子; 高延性; 複合材料; ガラス形成能; 合金化

1) Glass-forming ability of Cu-Zr-Al-Ag alloys was significantly enhanced by the composition optimum. The Ta particles (40μm) homogenously distributed the Cu-Zr-Al-Ag bulk glassy alloys with diameters of 2-5mm were synthesized. The composites showed high strength and unusual plasticity. Ta particles seed the initiation of multiple shear bands and block the shear band propagation, leading to a net-like homogeneous distribution of the shear bands.2) The large-size Zr-Cu-Al-Fe bulk glassy alloys containing nanocrystals with size of 5-10nm were obtained by copper mold casting. The composites exhibited a combination of high yield strength and large plasticity. The mechanism for the large plasticity of the new bulk glassy composites is elucidated.

1)优化的成分显著提高了合金的非晶形成能力。合成了直径为2~5 mm的Ta颗粒(40μm)均匀分布的Cu-Zr-Al-Ag块体非晶合金。复合材料表现出高强度和特殊的塑性。Ta颗粒导致多个剪切带的萌生并阻碍剪切带的扩展，导致剪切带呈网状均匀分布。2)采用铜模铸造法制备了尺寸为5~10 nm纳米晶的大尺寸非晶合金。该复合材料表现出高屈服强度和大塑性的结合。阐明了新型块体玻璃复合材料高塑性的机理。

项目成果

Glass-forming ability and differences in the crystallization behavior of ribbons and rods of Cu_36Zr_48Al_8Ag_8 bulk glass-forming alloy

• DOI: 10.1557/jmr.2009.0219
• 发表时间: 2009-05
• 期刊: Journal of Materials Research
• 影响因子: 2.7
• 作者: D. V. Louzguine-Luzgin;G. Xie;Song Li;Qingsheng Zhang;Wei Zhang;C. Suryanarayana;A. Inoue

Unusual room temperature ductility of a Zr-based bulk metallic glass containing nanoparticles

• DOI: 10.1063/1.2746071
• 发表时间: 2007-06
• 期刊: Applied Physics Letters
• 影响因子: 4
• 作者: J. Qiang;W. Zhang;G. Xie;A. Inoue

Formation and mechanical properties of new Cu-rich Cu-Zr-Al-Ag glassy alloys with high glass-forming ability

高玻璃形成能力的新型富铜Cu-Zr-Al-Ag非晶合金的形成及力学性能

• 发表时间: 2009
• 期刊: Mater.Trans 50
• 作者: W. Zhang;Q. S. Zhang;A. Inoue
• 通讯作者: A. Inoue

Transition from Plasticity to Brittleness in Cu-Zr-Based Bulk Metallic Glasses, 48 (2007),

Cu-Zr 基大块金属玻璃从塑性到脆性的转变，48 (2007)，

• 发表时间: 2007
• 期刊: Mater. Trans. 48
• 作者: Q. S. Zhang;W. Zhang and A. Inoue
• 通讯作者: W. Zhang and A. Inoue

TMS 2008 Annual Meeting & Exhibition

TMS 2008年会

• 发表时间: 2008
• 作者: Ji-Guang Li;R.Bchel;M.Isobe;T.Mori;T.Ishigaki;W. Zhang
• 通讯作者: W. Zhang