PREPARATION OF FUNCTIONALY GRADED MATERIALS USING THE MECHANICALY ALLOYED METALIC-POWDER AND ITS MECHANICAL PROPERTIES

机械合金化金属粉制备功能梯度材料及其力学性能

• 批准号: 08650123
• 负责人: YUASA Eiji
• 金额: $ 1.28万
• 依托单位: Musashi Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650123/
• 关键词: FUNCTIONALY GRADED MATERIAL; COMPOSITE MATERIAL; MECHANICAL ALLOYING; POWDER FORMING; MECHANICAL PROPERTIES; DIFFUSION BONDING; STRUCTURAL CHANG; AGE-HARDENING; 導電性; 機械的強度

Titanium and boron powders were mixed various contents of molar ratio Ti/B=1/2 to copper and aluminum powders and the mixture was mechanically alloyed for various milling periods. The copper and aluminum matrix phases super-saturated with are formed and the ciystalline size of matrix phases became to nanometer order.Microstructural changes in the alloy powder with the age treatment were investigated by small-angle scatter technique in the X-ray diffraction. In an early stage of the age treatment for the mechanically alloyed Cu-Ti-B powder forms a modulated structure. After the age treatment for long time, titanium boride phases such as TiB_2, TI_2 B_5 and Ti_3 B_4 form in the mechanically alloyed Cu-Ti-B and AL-TI-B alloy powders.Consolidation of the lamellar compact as functionally material was estimated from standpoints of densification and mechanical strength of the compact and microsti-ructural change in the each alloy layer during vacuum hot pressing. The lamellar compact is homogeneously densely formed without curved contours by the vacuum hot pressing for shorter treating time at lower temperature than conventional sintering after cold compacting. The lameller compact hot-pressed in the vacuum atmosphere has high rupture strength in the bending.

将不同含量的钛粉和硼粉以Ti/B=1/2的摩尔比与铜粉和铝粉混合，并在不同的球磨周期内对混合物进行机械合金化。形成过饱和的铜、铝基体相，基体相的晶粒尺寸达到纳米量级。采用X射线衍射小角散射技术研究了时效处理后合金粉末显微结构的变化。在时效处理的早期阶段，机械合金化的 Cu-Ti-B 粉末形成调制结构。经过长时间的时效处理，机械合金化的Cu-Ti-B和AL-TI-B合金粉末中形成了TiB_2、TI_2 B_5和Ti_3 B_4等硼化钛相。从真空热态过程中压坯的致密化和机械强度以及各合金层的微观组织变化的角度来评估层状压坯作为功能材料的固结情况。 压。通过真空热压，与传统的冷压后烧结相比，在较低温度下处理时间更短，形成均匀致密的层状压坯，无弯曲轮廓。在真空气氛中热压的层压成型体在弯曲时具有高断裂强度。

项目成果

湯浅栄二: "メカニカルアロイングで作製したCu-Ti-B合金積層体の真空ホットプレス" 粉体および粉末冶金. 45・3. 211-215 (1998)

Eiji Yuasa：“通过机械合金化制备的 Cu-Ti-B 合金层压板的真空热压”粉末和粉末冶金 45・3（1998）。

湯浅 栄二: "メカニカルアロイングでCu-Ti-B合金積層体の真空ホットプレスによる固化成形" 日本機械学会論文集A. 63・610. 1327-1333 (1997)

Eiji Yuasa：“通过真空热压进行机械合金化的Cu-Ti-B合金层压板的固结成形”日本机械工程学会会刊A.63・610（1997年）。

Eiji Yuase, et.al.: "Compacting Characteristics in Vacuum Hot Pressing of Cu-Ti-B Alloy Powder Prepared by Mechanical Alloying" Trans.of the JPN Soc.of Mech.Engineers. 63,610. 1327-1333 (1997)

Eiji Yuase 等人：“机械合金化制备的 Cu-Ti-B 合金粉末真空热压的压实特性”Trans.of the JPN Soc.of Mech.Engineers。

Eiji Yuasa, et al.: "Consolidation of mechanically Milled powder mixture of aluminum and quasicrystalline particle" JPN Soc.of Powder and Powder Met.45,10. 995-999 (1998)

Eiji Yuasa 等人：“铝和准晶颗粒的机械研磨粉末混合物的固结”JPN Soc.of Powder and Powder Met.45,10。

Eiji Yuasa, et al.: "Mechanical alloying process of Al-Ti-B powder mixture and its heat treatment property" JPN Soc.of Powder and Powder Met.45,10. 990-994 (1998)

Eiji Yuasa等：“Al-Ti-B粉末混合物的机械合金化工艺及其热处理性能”JPN Soc.of Powder and Powder Met.45,10。