Analysis on Residual Stress in TiN Coating with Different Thicknesses

Chuan Liang Cao; Xiang Lin Zhang; Hai Yang Wang

doi:10.4028/www.scientific.net/AMM.217-219.1306

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 217-219Analysis on Residual Stress in TiN Coating with...

Analysis on Residual Stress in TiN Coating with Different Thicknesses

Abstract:

TiN coating is often coated on fine blanking tools made of with the powder metallurgy high speed steel S790 by Multi-arc ion plating. The phase variation, residual stress and microhardness of TiN coatings were respectively analyzed by X-Ray Diffraction(XRD) and Vickers hardness tester in this research. The result shows that: there is obvious preferred orientation in the crystal surface (1 1 1) and (2 2 2) of TiN coating, the residual stress of TiN coating ranges from -2 347 MPa to -1 920 MPa, and that of the substrate from -154.9 MPa to -69.21 MPa, both of which decrease with the increasing of coating thickness. The TiN coating on the S790 substrate was annealed at temperature 500°C for one hour. It was revealed that the stress state of TiN coating was better and thus the properties of the TiN coating were improved.

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Periodical:

Applied Mechanics and Materials (Volumes 217-219)

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1306-1311

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https://doi.org/10.4028/www.scientific.net/AMM.217-219.1306

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Online since:

November 2012

Authors:

Chuan Liang Cao, Xiang Lin Zhang, Hai Yang Wang

Keywords:

Annealing, Residual Stress, Thickness of Coating, TiN

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