Deformation and in-situ structural transition of metallic glasses with inhomogeneous local structure under the various applied loads

2014 Fiscal Year Final Research Report

• Project/Area Number: 23246109
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Physical properties of metals
• Research Institution: Tohoku University
• Principal Investigator: SAIDA Junji 東北大学, 学際科学フロンティア研究所, 教授 (20359540)
• Co-Investigator(Kenkyū-buntansha): IMAFUKU Muneyuki 東京都市大学, 工学部, 教授 (00183012) ; SUZUKI Hiroshi 独立行政法人日本原子力研究開発機構, 研究副主幹 (10373242) ; SATO Shigeo 茨城大学, 大学院理工学研究科, 教授 (40509056) ; ITOH Keiji 岡山大学, 大学院教育学研究科, 准教授 (80324713) ; SHOBU Takahisa 独立行政法人日本原子力研究開発機構, 研究副主幹 (90425562)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: 金属ガラス / 局所不均質構造 / ガラス形成能 / 変形 / 放射光X線解析 / 構造遷移

Outline of Final Research Achievements

Deformation and in-situ structural transition in Zr-based metallic glasses have been analyzed using high-energy x-ray diffraction by the evaluation of macroscopic, microscopic (medium-range) and atomic (short-range) strains. We found that change in microscopic strain strongly depends on the difference of inhomogeneous local structure, which is enhanced in the metallic glass with multi-components. Meanwhile, atomic strain is affected by the kind of pairs among the constitutional elements. Thus, it is important to investigate the deformation mechanism in metallic glasses using multi-scale analysis due to the different behavior with scale length.

Free Research Field

非平衡物質材料工学