Characteration of Laser Cladded Fe-Mn-Cr Alloy Coatings Modified by Plasma Nitriding

• Dai Sheng

  College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics Zhejiang Provincial Key Laboratory for Cutting Tools, School of Mechanical Engineering, Taizhou University

• Zuo Dun-wen

  College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics

• Fang Chun

  Zhejiang Provincial Key Laboratory for Cutting Tools, School of Mechanical Engineering, Taizhou University

• Zhu Liu

  Zhejiang Provincial Key Laboratory for Cutting Tools, School of Mechanical Engineering, Taizhou University

• Cheng Hu

  Zhejiang Provincial Key Laboratory for Cutting Tools, School of Mechanical Engineering, Taizhou University

• Gao Yu-xin

  Zhejiang Provincial Key Laboratory for Cutting Tools, School of Mechanical Engineering, Taizhou University

• Li Wei-wei

  College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics Zhejiang Provincial Key Laboratory for Cutting Tools, School of Mechanical Engineering, Taizhou University

抄録

With the use of the high-performance precision mould, the requirements on the high speed, high reliable mould parts become more and more stringent. In order to further improve the surface wear resistance of moulds, Fe-Mn-Cr alloy coatings was prepared by a duplex treatment consisting of laser cladding followed by plasma nitriding. A dense structure coating with no cracks, pores or other defects were obtained after the duplex treatment, presenting a good metallurgical bonding to the substrate. After the duplex treatment, a nitride-layer of ξ-Fe₂N+Cr₂N and α-Fe with nitrogen were formed on the coating surface. The influence of the duplex treatment on the hardness and wear resistance of the cladding layer were investigated. The hardness of the coating significantly increased, with an average microhardness of 1788 HV, which ensured the wear resistance of the coating. Comparing with laser cladded coating, the samples with duplex treated coating dropped about 41% in wear rate, and performed a better wear resistance. The main wear mechanism of the samples with duplex treated coating was abrasive wear.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 57 (4), 539-543, 2016

  公益社団法人 日本金属学会

キーワード

• laser cladding
• duplex treatment
• plasma nitriding
• iron-manganese-chromium alloy coating
• tribological property

詳細情報

• CRID: 1390001204253713536
• NII論文ID: 130005138763
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.m2015396
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 027232911
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I027232911
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/57/4/57_M2015396/_pdf
• 本文言語コード: en
• データソース種別:
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