Crystalline-amorphous transformations by mechanical alloying

通过机械合金化进行晶-非晶转变

• 批准号: 11650712
• 负责人: AOKI Kiyoshi
• 金额: $ 2.3万
• 依托单位: Kitami 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: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650712/
• 关键词: Intermetallic Compounds; Amorphous; Mechanical Alloying; Cyclic Transformation; Metastable Phase; Solid State Reaction; Lattice Defects; Magnetic Property; ミリング; チタン合金; 結晶化; アモルファス化; 熱分析; ボールミリング; 非平衡相; 粉末; 結晶化温度; 磁性; サイクル; 相変態; MA; 構

Cyclic crystalline-amorphous-crystalline phase transformations have been investigated during high-energy ball milling of a mixture of elemental Co_<75>Ti_<25> powder under an argon gas atmosphere. The results have shown that the single amoiphous phase, which is obtained after 11 ks of mechanical alloying time, transforms into a new metastable phase of nanocrystalline bcc-Co_3Ti upon milling for 86 ks. However, it transforms to the same amorphous phase upon further milling (360 ks). The present work shows the effects of the milling time and the milling speed on the structure of the mechanically alloyed powders.

本文研究了Co_ Ti_（1-x）混合粉末在氩气气氛下高能球磨过程中的晶体-非晶-晶体循环相变<75><25>。结果表明，机械合金化11 ks后得到的单一非晶相，经86 ks球磨后转变为新的亚稳相bcc-Co_3 Ti纳米晶。然而，在进一步研磨（360 ks）时，其转变为相同的非晶相。研究了球磨时间和球磨速度对机械合金化粉末结构的影响。

项目成果

M. Sherif EL-Eskandarany, K. Aoki, K. Sumiyama and K. Suzuki: "Cyclic phase transformations of mechanically alloyed Co_<75>Ti_<25> powders"Acta materialia. 50. 1113-1123 (2002)

M. Sherif EL-Eskandarany、K. Aoki、K. Sumiyama 和 K. Suzuki：“机械合金化 Co_<75>Ti_<25> 粉末的循环相变”材料学报。

M.S.EL-Eskandarany,K.Aoki,K.Sumiyama,K.Suzuki: "Cyclic Solid State Transformation during Ball Milling of Aluminum Zirconium Powder and the Effect of Milling Speed"Metall. Mater. Trans.. 30A. 1877-1880 (1999)

M.S.EL-Eskandarany、K.Aoki、K.Sumiyama、K.Suzuki：“铝锆粉球磨过程中的循环固态转变以及研磨速度的影响”金属。

M.Sherif EL-Eskandarany, K.Aoki, K.Sumiyama et al.: "Cyclic ciystall me-amorphous transformations of Mechanically alloyed Co_<75>Ti_<25>"Applied Physics Letter. 70. 1679-1681 (1997)

M.Sherif EL-Eskandarany、K.Aoki、K.Sumiyama 等人：“机械合金化 Co_<75>Ti_<25> 的循环晶体非晶转变”应用物理快报。

M. Sherif EL-Eskandarany, K. Aoki, K. Sumiyama, and K. Suzuki: "Cyclic crystalline-amorphous transformations of Mechanically alloyed Co_<75>Ti_<50>"Applied Physics Letter. 70. 1679-1681 (1997)

M. Sherif EL-Eskandarany、K. Aoki、K. Sumiyama 和 K. Suzuki：“机械合金化 Co_<75>Ti_<50> 的循环结晶-非晶转变”应用物理快报。

M.Sherif EL-Eskandarany, K.Aoki, K.Sumivama et al.: "Mechanically induced cyci ic crystalline-amorphous transformations of ball milled Co_<50>Ti_<50>"Scripta Materiaria. 36. 1001-1009 (1997)

M.Sherif EL-Eskandarany、K.Aoki、K.Sumivama 等人：“球磨 Co_<50>Ti_<50> 的机械诱导循环结晶-非晶转变”Scripta Materiaria。