Affiliation:
1. Chinese Academy of Sciences
2. Shenyang University of Technology
Abstract
The depth distribution of the residual stress in graded (Ti, Al) N coating deposited on steel
by arc ion plating was measured by the Stripping Layer Substrate Curvature Technique, and the effect
of graded (Ti, Al) N and mono-layered (Ti, Al)N coating on the fatigue properties of
1Cr11Ni2W2MoV stainless steel were investigated. The depth distribution of the residual stress in
mono-layered Ti70Al30N and TiN were also measured for comparison. The results show that the
residual stresses in the coatings are compressive, which increase gradually from the coating/substrate
interface and reach a maximum value at the middle region, then decrease until the surface. Compared
with TiN and Ti70Al30N, the stress maximum value in the graded coating is nearer to the coating
surface. It is also shown that the fatigue strength of the graded (Ti, Al)N and Ti70Al30N coated
samples are superior to that of the uncoated substrate. The improvement of the fatigue properties for
the coated samples is thought to be attributed to the hard coatings with high compressive stress.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Cited by
4 articles.
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