Study on Tension-Compression Fatigue Properties of Hard Machined Components

Author:

Chen Tao1,Liu Xianli1,Li Suyan1,Li Kai1

Affiliation:

1. School of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China

Abstract

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.

Publisher

SAGE Publications

Subject

Mechanical Engineering

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