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Analysis of Laser Surface Treatment

Research Project

Project/Area Number 63550504
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 金属加工(含鋳造)
Research Institutionthe University of Tokyo

Principal Investigator

SUZUKI Toshio  the University of Tokyo, Department of Metallurgy, Associate Professor, 工学部, 助教授 (70115111)

Co-Investigator(Kenkyū-buntansha) IKEDA Minoru  the University of Tokyo, Department of Metallurgy, research assistant, 工学部, 助手 (50167243)
SAKUTA Hiroshi  Nagaoka University of Technology, Department of Mechanical Engineering, Associat, 工学部, 助教授 (10170630)
Project Period (FY) 1988 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1989: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1988: ¥1,500,000 (Direct Cost: ¥1,500,000)
Keywordscast aluminum alloys / CO_2 laser absorptivities / rapid solidification / ferrite cast iron / レーザー表面改質 / レーザー光吸収率 / アルミニウム合金 / デンドライト2次アーム間隔
Research Abstract

The aim of this work is to analyze the laser surface treatment process, and measurement of physical properties necessary for the analysis and finite element analysis for laser surface treatment process have been carried out.
At first, absorptivities of cast aluminum alloys for CO2 laser light were determined in two different methods, by measuring the power reflected from the surface of alloys and by measuring temperature rise of alloys during irradiation. When the surface of an alloy is fine enough, absorptivities determined by two methods are nearly equal to each other. The absorptivity of alloys depends on the surface roughness and the content of alloying element.
Secondly, the surface of ferrite cast iron was rapidly melted and solidified using CO2 laser. The absorptivity of the alloy was estimated by comparing the values of melt depth and width of spot-melted specimen to those by FEM analysis. The determined value of absorptivity was 50%. With the determined value of absorptivity, thermal analysis of scan-melted specimens was carried out and the condition of laser surface treatment process was discussed.
Finally, amorphization of iron-based alloys was tried using pulse YAG laser, and its optimum conditions were investigated.
These results have been already published in "KEIKINZOKU" and "TETSU-TO-HAGANE", and some of them are ready for submitting to Journal of the Japan Institute of Metals.

Report

(3 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report

Research Products

(8 results)

All Other

All Publications

  • [Publications] 黒部淳,佐久田博司,鈴木俊夫,宮田保教,一ノ瀬幸雄: "各種鋳造用アルミニウム合金のCO_2レ-ザ-光吸収率" 軽金属. 38. 468-472 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 黒部淳,佐久田博司,宮田保教,鈴木俊夫,一ノ瀬幸雄: "CO_2レ-ザ-によるFe-3%C-2%Si合金表面の急速溶解凝固" 鉄と鋼. 75. 102-109 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] J.Kurobe, H.Sakuta, T.Suzuki, Y.Miyata and Y.Ichinose: "CO_2 Laser Light Absorptivities of Cast Aluminum Alloys" KEIKINZOKU, 38, pp.468-472, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] J.Kurobe, H.Sakuta, T.Suzuki, Y.Miyata and Y.Ichinose: "Rapid Melting and Solidification of Fe-3%C-2%Si alloy using cw CO_2 Laser" TETSU-TO-HAGANE, 75, pp.1170-1177, 1989.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 黒部淳,佐久田博,鈴木俊夫,宮田保教,一ノ瀬幸雄: "各種鋳造用アルミニウム合金のCO_2レ-ザ-光吸収率" 軽金属. 38. 468-472 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] 黒部淳,佐久田博司,鈴木俊夫,宮田保教,一ノ瀬幸雄: "CO_2レ-ザ-によるFe-3%C-2%Si合金表面の急速溶解凝固" 鉄と鋼. 75. 102-109 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 黒部淳: 軽金属. 38. 468-472 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 黒部淳: 鉄と鋼.

    • Related Report
      1988 Annual Research Report

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Published: 1988-03-31   Modified: 2016-04-21  

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