Development of microstructure imaging for predicting mechanical properties of materials by using synchrotron radiation X-rays

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560869
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Material processing/treatments
• Research Institution: Ibaraki University (2014); Tohoku University (2012-2013)
• Principal Investigator: SATO Shigeo 茨城大学, 理工学研究科, 教授 (40509056)
• Co-Investigator(Renkei-kenkyūsha): SHOBU Takahisa 日本原子力研究開発機構, 副主幹研究員 (90425562)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 金属組織解析 / X線回折 / ラインプロファイル解析 / 転位

Outline of Final Research Achievements

To predict fracture and work hardening of metallic microstructure in structural materials, we have developed analytical methods for determining 2-dimensional distributions of dislocations and residual stresses by using X-ray diffraction methods. Firstly, the line-profile analysis based on the energy dispersive X-ray diffraction method was developed in 2012. High spatial-resolution line-profile analysis was developed in 2013 to characterize cold-drawn pearlitic steels. In 2014, These analytical methods were applied to the Co-Cr alloys with negative stacking fault energies.

Free Research Field

量子ビーム組織解析学