Strengthening metallic materials with fcc crystal sturcture up to ideal strength

2014 Fiscal Year Final Research Report

• Project/Area Number: 24360297
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Structural/Functional materials
• Research Institution: Ibaraki University (2014); Toyota Central R&D Lab., Inc. (2012-2013)
• Principal Investigator: KURAMOTO Shgeru 茨城大学, 工学部, 教授 (10292773)
• Co-Investigator(Renkei-kenkyūsha): AOI Ichro 株式会杜豊田中央研究所, 先端研究センター・社会システム研究室 (80318782) ; FURUTA Tadahiko 株式会杜豊田中央研究所, 材料・プロセス1部・合金設計・プロセス研究室 (40394506) ; OHSUNA Tetsu 株式会杜豊田中央研究所, 分析・計測研究部・材料解析研究室 (60271962) ; HORIBUCHI Kayo 株式会杜豊田中央研究所, 分析・計測研究部・組織解析研究室 (30394993) ; TAKAO Hisaaki 株式会杜豊田中央研究所, 材料・プロセス1部 (00394718)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 金属材料 / 高強度化 / 加工 / ナノ組織

Outline of Final Research Achievements

The effects of alloy compositions and process conditions on the strength of the aluminum alloys processed with severe plastic deformation, which has been reported to be very effective to refine the nanostructure. The mechanism of strengthening in such specimens has been also studied. The alloying elements, zinc, magnesium and copper, are very effective to raise the strength and high solidification rate during casting process is also effective to achieve high strength. As for the mechanism of strengthening, both grain refinement and segregation of alloying elements to grain boundaries are thought to be important factors to suppress the deformation at high strength level.

Free Research Field

金属材料学