Study on Tension-Compression Fatigue Properties of Hard Machined Components

• Main Authors: Tao Chen, Xianli Liu, Suyan Li, Kai Li
• Format: Article
• Language: English
• Published: SAGE Publishing 2015-01-01
• Series: Advances in Mechanical Engineering
• Online Access: https://doi.org/10.1155/2014/437212

Hard turning and fatigue tests are conducted to study the influence of cutting process on the fatigue properties of hard machined components in this work. The specimens are machined under various cutting speeds and tool wear condition. Tension-compression fatigue tests of the specimens are performed. The typical fatigue fracture patterns are observed and discussed. The fatigue life of the specimens is recorded and compared. The mechanism of the influence of white layer on fatigue properties is proposed, and the effects of white layer on the fatigue life are obtained. The changing process of tensile and compressive residual stresses is discussed. The effects of surface residual stress and maximum residual stress on the fatigue life are clarified.