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Science China Technological Sciences

, Volume 61, Issue 12, pp 1901–1906 | Cite as

Microstructure and properties of nitrided layer of titanium plate, produced by simultaneous laser quenching and liquid-nitrogen cryogenics

  • QuanTong Yao
  • Chen Tian
  • Jian Sun
  • Liang Zuo
  • WeiPing TongEmail author
Article

Abstract

In the present study, titanium plate was treated by a novel method of laser quenching, simultaneously combined with liquid-nitrogen cryogenics (LQLNC). The microstructure and properties of the titanium plate after treatment were investigated by X-ray diffraction, scanning electron microscopy, energy dispersive spectrometry, Vickers hardness testing, and friction wear testing. The results show that the treated titanium plate is covered by a nitrided layer with a homogeneous thickness of about 60 μm, while the nitrided layer consists of TiN and α-Ti phases. Compared to general laser quenching, the LQLNC treatment increases the hardness and wear resistance of the surface-modified layer of the titanium plate. As a result of grain refinement in the nitrided layer, the cracking induced by the rapid solidification of the conventional laser-quenching process has also been effectively solved.

Keywords

laser quenching liquid nitrogen titanium plate hardness wear resistance 

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Copyright information

© Science in China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • QuanTong Yao
    • 1
  • Chen Tian
    • 1
  • Jian Sun
    • 2
  • Liang Zuo
    • 3
  • WeiPing Tong
    • 1
    Email author
  1. 1.Key Laboratory of Electromagnetic Processing of Materials, Ministry of EducationNortheastern UniversityShenyangChina
  2. 2.Department of Materials Science and EngineeringHefei University of TechnologyHefeiChina
  3. 3.School of Materials Science and EngineeringNortheastern UniversityShenyangChina

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