Development of Light-Weight Materials having Higher Performance at high Temperature Controlled by hexagonal-platelet Equilibrium Phase

六方片平衡相控制的高温高性能轻质材料的开发

• 批准号: 18560675
• 负责人: MATSUDA Kenji
• 金额: $ 0.78万
• 依托单位: University of Toyama
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18560675/
• 关键词: Al-Mg-Si Alloy; Cu-addition; Ag-addition; β-Mg_2Si; β'-Metastable phase; Hexagonal platelet; AI-Mg-Si合金; β一Mg2Si相

For the purpose to improve mechanical property at higher temperature in Al-Mg-Si alloys, precipitates and aging behavior of20alloys with Cu and/or Ag addition have been investigated by TEM and hardness test. The hexagonal platelet has been discovered in alloys with Cu and/or Ag addition aged at673K. This is the first report about such plate. This platelet has the crystallographic orientation relationship with the Al-matrix as follows: {111}_<Al>//{l11}_<hexβ>,<110>_<Al>//<110>_<hexβ>. This platelet has the same crystal lattice and chemical composition as the normal β-Mg_2Si. However, Ag could be included in this phase by EDS analysis. These alloys with Cu and Ag aged at423K have shown higher elongation and strength than that with just Cu or Ag. This result has been proposed to the Japanese Patent.

为了提高Al-Mg-Si合金的高温力学性能，采用透射电镜和硬度试验研究了Cu和/或Ag合金的析出相和时效行为。在673k时，在Cu和/或Ag合金中发现了六方血小板。这是第一次报道这种板材。血小板与Al基体的取向关系为：{111}_<Al>//{11}_<hexβ>,<110>_<Al>//<110>_<hexβ>。该血小板具有与正常β-Mg_2Si相同的晶格和化学成分。然而，通过EDS分析，Ag可以包含在这一阶段。经423k时效处理后，Cu和Ag合金的伸长率和强度均高于Cu和Ag合金。该成果已向日本提出专利申请。

项目成果

Crystal structure of the β'-phase in Al-Mg-Si-Ag alloy

Al-Mg-Si-Ag合金中β相的晶体结构

• 发表时间: 2007
• 期刊: Materials Science Forum 539-543
• 作者: K. Matsuda;J. Nakamura;Y. Nakamura;T. Sato;S. Ikeno
• 通讯作者: S. Ikeno

Hexagonal Platelet β in Al-Mg-Si-Ag alloy(登録済)

Al-Mg-Si-Ag 合金中的六方片β（已注册）

• 发表时间: 2008
• 作者: K.Matsuda;他
• 通讯作者: 他

THE EFFECT OF Ag-ADDITION ON PRECIPITATION SEQUENCE INAl-1.Omass%Mg_2Si-EXCESS 0.4mass%/Si ALLOY

THE%20EFFECT%20OF%20Ag-ADDITION%20ON%20PRECIPITATION%20SEQUENCE%20INAl-1.Omass%Mg_2Si-EXCESS%200.4mass%/Si%20ALLOY

• 发表时间: 2007
• 作者: K. Niwa;K. Matsuda;J. Nakamura;T Sato;S. Ikeno
• 通讯作者: S. Ikeno

Cu Segregation around Metastable Phase in Al-Mg-Si Alloy with Cu

• DOI: 10.2320/matertrans.48.967
• 发表时间: 2007-05
• 期刊: Materials Transactions
• 影响因子: 1.2
• 作者: K. Matsuda;D. Teguri;Tatsuo Sato;Y. Uetani;S. Ikeno

THE EFFECT OF Ag-ADDITION ON PRECIPITATION SEQUENCE IN Al-1.0mass%Mg_2Si-EXCESS 0.4mass%Si ALLOY

%20EFFECT%20OF%20Ag-ADDITION%20ON%20PRECIPITATION%20SEQUENCE%20IN%20Al-1.0mass%Mg_2Si-EXCESS%200.4mass%Si%20ALLOY

• 发表时间: 2007
• 作者: K. Niwa;K. Matsuda;J. Nakamura;T. Sato;S. Ikeno
• 通讯作者: S. Ikeno