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Improvement of formability and surface quality of aluminum alloy sheets by ultrasound treatment

Research Project

Project/Area Number 22560692
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Structural/Functional materials
Research InstitutionYokohama National University

Principal Investigator

HIROSAWA Shoichi  横浜国立大学, 工学研究院, 准教授 (20345359)

Research Collaborator OSHIDA Sanichiro  Southearstern Louisiana大学, Dept.Chemistry and Physics, 教授
Project Period (FY) 2010 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsアルミニウム-マグネシウム系合金 / ストレッチャ・ストレインマーク / 表面品質 / 自動車ボディパネル / 電子スペックルパターン干渉法 / ホワイトバンド / Al-Mg系合金 / 国際研究者交流 / アルミニウム合金 / 成形性 / 超音波印加加工処理 / セレーション / 自動車ポディパネル
Research Abstract

Weight reduction of gasoline cars is one of the effective means to reduce greenhouse gas such as CO_2 and NO_x. Aluminum alloy sheets, especially Al-Mg alloy sheets, are quite attractive as a body panel material because of the smaller specific gravity. However, there is a problem that diagonal patterns called stretcher-strain marks (SS marks) are produced after plastic deformation, resulting in the diminished surface quality of such panel products. In this study, the formation behavior of SS marks during tensile testing of Al-Mg alloy sheets was aimed at elucidating through a newly developed electronic speckle pattern interferometry (ESPI).

Report

(4 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (4 results)

All 2013 2011 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (3 results)

  • [Journal Article] Dynamic observation and evaluation of formation behavior of stretcher-strain marks during tensile testing of Al-Mg alloys2013

    • Author(s)
      Shoichi HIROSAWA, Naoki TANUMA, Sanichiro YOSHIDA
    • Journal Title

      Proc. Thermec 2013

      Volume: (in print)

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Presentation] Al-Mg系合金の引張加工時に観察されるセ レーションおよび SSマークの動的観察ならびに形成挙動評価2013

    • Author(s)
      田沼尚樹,濱岡巧,廣澤渉一,吉田賛一郎
    • Organizer
      横浜国立大学-横浜市立大学第8回ナノテク交流シンポジウム
    • Place of Presentation
      横浜市立大学
    • Year and Date
      2013-03-06
    • Related Report
      2012 Final Research Report
  • [Presentation] Al-Mg系合金板材の成形性および表面品質の向上2011

    • Author(s)
      田沼尚樹
    • Organizer
      軽金属学会関東支部若手研究者育成特別研修会
    • Place of Presentation
      神戸製鋼所鬼怒川保養所
    • Year and Date
      2011-09-05
    • Related Report
      2011 Annual Research Report
  • [Presentation] Al-Mg系合金の引張加工時に観察されるセレーションおよびSSマークの動的観察ならびに形成挙動評価

    • Author(s)
      田沼尚樹 濱岡巧 廣澤渉一 吉田賛一郎
    • Organizer
      横浜国立大学 横浜市立大学 第8回ナノテク交流シンポジウム
    • Place of Presentation
      横浜市立大学
    • Related Report
      2012 Annual Research Report

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Published: 2010-08-23   Modified: 2019-07-29  

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