Contact fatigue of high-speed steel with wear-resistant nitride coatings in a corrosive medium

Katsov, K. B.; Zhitomirskii, V. N.; Khrunik, R. A.

doi:10.1007/bf00723513

Cited by 5 publications

(1 citation statement)

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“…It turns out, however, that the improvement in fatigue life and wear depends on coating thickness and adhesion. 16 Ultimately, it is important for coatings that rolling contact surfaces remain intact. The present article has the task to show what phenomenon occurs after applying PVD to TiCN coating with a thickness of 3 mm at contact stress of CrL type sintered steel with modification 0?3 or 0?7 wt-%C and how it affects the values of the fatigue life.…”

Section: Introductionmentioning

confidence: 99%

Contact fatigue of TiCN coated sintered steels

Čerňan¹,

Rodziňák²,

Briančin

2014

Powder Metallurgy

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Investigation was focused on resistance of Astaloy CrL type sintered material to contact fatigue. The material in two versions (0·3 and 0·7 wt-%C) was covered with TiCN coating. The results show that resistance to contact fatigue increased substantially, up to the value of about 3410±90 MPa. This increase was influenced primarily by the properties of coating. In this case, the impact of the matrix was of secondary importance. The results obtained in the evaluation of life in terms of contact fatigue were confronted with those of the microscopic observation of generation and propagation of cracks leading to the formation of pitting, as well as with other tests. It describes the impact of contact fatigue stress to changes in the material at the point of application. A special section is devoted to the use of finite element method (FEM) for simulation of the Hertzian stress and changes during contact strain.

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Section: Introductionmentioning

confidence: 99%