Anomalous small-angle scattering at K absorption edge of Al for visualization of nanoclusters in Al-Mg based alloys

2015 Fiscal Year Final Research Report

• Project/Area Number: 25286085
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Quantum beam science
• Research Institution: Kyoto University
• Principal Investigator: OKUDA Hiroshi 京都大学, 工学(系)研究科(研究院), 准教授 (50214060)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 異常小角散乱法 / 軟Ｘ線 / 軽合金 / アルミニウム合金 / ナノ析出物

Outline of Final Research Achievements

Anomalous small-angle X-ray scattering system for contrast change using resonant effect at K absorption edges of Aluminum and Magnesium has been designed and constructed for realizing contrast enhancement to measure small-angle scattering from low-Z aluminum alloys, i.e., Al-Mg and Al-Mg-Si. To visualize Fourier transform of the scattering patterns by strengthening nanoclusters and nanoprecipitates, establishing quantitative measurements at the tender X-ray region is a new and technically difficult requirements.
We have shown that resonant small-angle scattering at the K absorption edge of Aluminum by Alumina nanoparticles and precipitates in Al alloy systems agreed with theoretical prediction given by Cromer-Liberman calculations.

Free Research Field

金属材料学、放射光材料評価学