レーザ照射による傾斜組成を持つＳＫＤ１１材の表面改質

• 田村 武夫

  新潟大学

• 齋藤 操希

  日産自動車(株)

書誌事項

タイトル別名

• Surface Modification of SKD11 with Functionally Graded Structure by Laser Irradiation
• レーザ ショウシャ ニ ヨル ケイシャ ソセイ オ モツ SKD11ザイ ノ ヒョウメン カイシツ

抄録

Cold working die steel, SKD11, is commonly used for the fabrication of metal molds owing to its superior wear and corrosion resistance properties. Carbides containing coarse grains in a melted layer can be completely decomposed into their elements by the laser irradiation of SKD11. Crystalline structures also change in the melted layer. In this study, the creation of a functionally graded material based on hardness was carried out experimentally, by controlling the crystalline structure and grain size on the basis of the change in feed speed. The crystalline structures in the melted layer become fine-grained, columnar and coarse-grained at a power density of 3.1x10⁵W/cm² and a feed speed of 300mm/min. The tensile residual stress on the laser-irradiated material can be removed by aging treatment for 5 minutes at 850°C. Under the above-mentioned conditions, the crystalline structures barely change before and after the aging treatment. Finally, the hardness changes linearly from 830HV at the surface to 680HV in the base metal. Thus, SKD11 with functionally graded structure was developed by combining laser irradiation and aging treatment.

収録刊行物

• 電気加工学会誌

  電気加工学会誌 43 (103), 74-81, 2009

  一般社団法人 電気加工学会

キーワード

• cold working die steel
• laser irradiation
• functionally graded structure
• aging treatment
• hardness

詳細情報

• CRID: 1390001206234525824
• NII論文ID: 10025532431
• NII書誌ID: AN00151681
• DOI: 10.2526/jseme.43.74
• ISSN: 18810888
• ISSN: 0387754X
• NDL書誌ID: 10404798
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10404798
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可