成果報告書詳細
管理番号20160000000063
タイトル*平成26年度中間年報 「革新的新構造材料等研究開発」 
公開日2016/4/15
報告書年度2014 - 2014
委託先名新構造材料技術研究組合
プロジェクト番号P14014
部署名電子・材料・ナノテクノロジー部
和文要約
英文要約Title: Innovative Structural Materials Project (Future Pioneering Project) (FY2014-FY2015) FY2014 Annual Report

(1) Development of Joining Technology
We examined the Physical Vapor Deposition (PVD) conditions to provide oxidation resistant and wear resistant tools for friction spot joining and confirmed their effects to develop medium and high carbon steel/medium and high carbon steel joining technology. We subsequently examined appropriate welding conditions for three-ply spot welding and understood the welding mechanism for developing steel/aluminum-joining technology.
(2) Development of innovative titanium materials
To develop high-performance titanium sheet production technology to reduce the time for smelting, dissolution, and hot rolling, we conducted laboratory verification of the current basic design guideline, which uses sponge titanium, in order to produce titanium sheet with high efficiency.
(3) Development of innovative aluminum materials
For developing high-strength, high-toughness aluminum alloys, we selected base alloy compositions and developed technologies to reduce the volume of mixing gas during melting and refining the structure when condensing. For rolling and extraction technologies, we optimized the process and investigated the changes in mechanical characteristics.
(4) Development of innovative magnesium materials
To develop easily workable magnesium materials and to derive an alloy composition that facilitates high-speed extrusion and obtains adequate strength and ductility through aging after extrusion, we investigated the mechanical characteristics and the influences of the micro-structure and principal alloy ingredients.
(5) Development of innovative steel sheet
To develop high-strength, high-ductility medium and high-carbon steel, we created multi-phase steel, where residual γ is highly controlled and a very fine martensite structure with a grain size of 1 micron. The created steels achieved strengths of 1.2 GPa and extensions of 15% (the interim targets as of fiscal 2015).
(6) Development of thermoplastic CFRP
To develop technology for joining thermoplastic CFRP with metallic materials, we screened elemental technologies necessary for joining thermoplastic CFRP with different kinds of materials (steel and aluminum alloys). To develop thermoplastic CFRP as well as structural design and working technologies, we examined test methods that measure errors of the material characteristics peculiar to the developed materials related to static behavior within 10% and verified the applicability of evaluated characteristics to CAE design parameters.
(7) Vacant number
(8) Strategic and basic research
We organized subcommittees for each material technology and subcommittees for strategy and base. We also researched and developed joining technology and individual materials and examined important subjects on the relationship with the application to transportation equipment including vehicles.
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