The effect of roughness and residual stresses on fatigue life time of an alloy of titanium

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• 作者：K. Moussaoui (1)
  M. Mousseigne (1)
  J. Senatore (1)
  R. Chieragatti (1)
  
  1. Universit de Toulouse 3 - Paul Sabatier ; 118 Route de Narbonne ; 31062 ; Toulouse ; France
  
• 关键词：Surface integrity ; Residual stress ; Ti6Al4V ; Fatigue life
• 刊名：The International Journal of Advanced Manufacturing Technology
• 出版年：2015
• 出版时间：April 2015
• 年：2015
• 卷：78
• 期：1-4
• 页码：557-563
• 全文大小：1,645 KB
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• 刊物类别：Engineering
• 刊物主题：Industrial and Production Engineering
  Production and Logistics
  Mechanical Engineering
  Computer-Aided Engineering and Design
  
• 出版者：Springer London
• ISSN：1433-3015

文摘

The quality of titanium alloy parts in the aeronautical field demands great reliability, especially in fatigue resistance. This is mainly determined by surface integrity, which is in turn defined by geometrical, mechanical and metallurgical parameters. The present article provides a study of the influence that surface integrity has on the fatigue life of Ti6Al4V. Milling plans of procedure generating widely varying surface integrities were performed on fatigue test coupons. Four-point bending tests were then conducted. No influence of the geometric and metallurgical parameters was observed. Only the mechanical parameter seems to have a preponderant influence on fatigue life.