Shock compaction of powders for making crack-free bulk materials including the effect of shock-induced heat in micro-area

用于制造无裂纹散装材料的粉末的冲击压实，包括微区域中冲击引起的热量的影响

• 批准号: 15360391
• 负责人: HOKAMOTO Kazuyuki
• 金额: $ 8.26万
• 依托单位: Kumamoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15360391/
• 关键词: Powder compaction; Shock compression; Bulk material; Explosive forming; Shock wave; Shock-induced reaction; 衝撃誘起反応

The present investigation tried to establish a method for shock compaction of powders to obtain crack-free bulk materials. Also, the effect of thermal energy induced in micro-area during shock compaction was discussed. At first, a new assembly for shock compaction was proposed which used the detonation of an explosive to convert it into underwater shock wave. The pressure distribution and the pressure profile was controlled based on the numerical analysis as well as the measurement using manganin gage. The method proposed enables to control the pressurizing condition only by changing the distance between the explosive and the sample using an explosive which has stable detonation velocity. Using the assembly newly designed, the possibility for making Al-SiCp and Mg-SiCp composites through shock compaction. Also, the possibility of synthesizing intermetallics from mixed element powders was suggested. The synthesized intermetallic showed nano-sized substructure based on the rapid change of the physical conditions which enables to show highly-functional properties. A new method of synthesizing thin coating layer by intermetallics was also suggested.

本研究试图建立一种粉末冲击压实方法以获得无裂纹的散装材料。此外，还讨论了冲击压实过程中微区域内引起的热能的影响。首先，提出了一种新的冲击压实组件，它利用炸药的爆炸将其转化为水下冲击波。基于数值分析以及使用锰铜计的测量来控制压力分布和压力分布。所提出的方法能够仅通过使用具有稳定爆速的炸药改变炸药与样品之间的距离来控制加压条件。使用新设计的组件，可以通过冲击压实制造 Al-SiCp 和 Mg-SiCp 复合材料。此外，还提出了从混合元素粉末合成金属间化合物的可能性。合成的金属间化合物显示出基于物理条件快速变化的纳米级子结构，从而能够表现出高功能特性。还提出了一种利用金属间化合物合成薄涂层的新方法。

项目成果

Characteristics of the surface coating layer obtained by shock compaction and reaction synthesis through underwater shock compression

水下冲击压缩冲击压实反应合成得到的表面涂层特性

• 发表时间: 2005
• 期刊: Science and Technology of Energetic Materials 66-4
• 作者: Hokamoto K.;et al.
• 通讯作者: et al.

The possibility for making large-sized bulk Al-based composites through dynamic compaction using water pressure medium

使用水压介质通过动态压实制造大尺寸块状铝基复合材料的可能性

• 发表时间: 2004
• 期刊: Materials Science Forum 465-466
• 作者: Hokamoto;K.et al.
• 通讯作者: K.et al.

Microstructural characteristics of underwater shock consolidated aluminum composites

水下冲击固结铝复合材料的微观结构特征

• 发表时间: 2003
• 期刊: Journal of Materials Science and Technology 19-4
• 作者: Raghukandan;K. et al.
• 通讯作者: K. et al.

The possibility for making large-sized Al-based composites through dynamic compaction using water as pressure medium

以水为压力介质通过动态压实制造大尺寸铝基复合材料的可能性

• 发表时间: 2004
• 期刊: Materials Science Forum 465-466
• 作者: Hokamoto;K. et al.
• 通讯作者: K. et al.

衝撃粉末成形法によるAl基複合材料新素材創製の試み

尝试利用冲击粉末成型法制造新型铝基复合材料

• 发表时间: 2004
• 期刊: 日本機械学会第12回機械材料・材料加工技術講演会
• 作者: T.TAGO;M.NISHI;Y.KOUNO;T.MASUDA;田中 茂ほか
• 通讯作者: 田中 茂ほか