Journal of Failure Analysis and Prevention

, Volume 12, Issue 5, pp 485–489 | Cite as

Fracture Failure Analysis of a 30CrMnSiA Steel Shaft

Case History---Peer-Reviewed

Abstract

A shaft suddenly suffered fracture during the test of loading in three directions. The shaft was made from 30CrMnSiA steel. The failure cause was analyzed by visual, stereo, and scanning electron microscopic observations of appearance and fracture surface of the shaft, micro-area composition inspection, metallographic examination, and measurement of the hydrogen content. The results showed that the failure mechanism of the shaft was fatigue fracture resulting from hydrogen-induced intergranular microcracks. The hydrogen-induced cracks were mainly caused by abnormal pickling during production of the shaft.

Keywords

Failure analysis Shaft Fatigue fracture Hydrogen-induced crack 

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Copyright information

© ASM International 2012

Authors and Affiliations

  • Xue-Qin Hou
    • 1
  • Ying Li
    • 2
  • Chang-Kui Liu
    • 1
  • Yu-Huai He
    • 1
  1. 1.AVIC Failure Analysis Center, Beijing Institute of Aeronautical MaterialsTouchstone Testing Innovation CooperationBeijingPeople’s Republic of China
  2. 2.Beijing Institute of Electromechanic System EngineeringBeijingPeople’s Republic of China

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