Influence of Dynamic Strain Aging on High Cycle Fatigue Behavior of Alloy 617M

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• 作者：Aritra Sarkar ; A. Nagesha ; R. Sandhya…
• 关键词：DSA ; HCF ; Alloy 617M
• 刊名：Transactions of the Indian Institute of Metals
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：69
• 期：2
• 页码：399-402
• 全文大小：876 KB
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  5.Sarkar A, Nagesha A, Sandhya R, and Mathew M D, Mater High Temp 29 (2012) 352.CrossRef
  
• 作者单位：Aritra Sarkar (1)
  A. Nagesha (1)
  R. Sandhya (1)
  M. Nandagopal (1)
  K. Laha (1)
  A. K. Bhaduri (1)
  
  1. Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, TN, 603 102, India
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Materials Science
  Metallic Materials
  Materials Science, general
  Tribology, Corrosion and Coatings
  
• 出版者：Springer India
• ISSN：0975-1645

文摘

Effect of dynamic strain aging (DSA) on the high cycle fatigue (HCF) behavior of alloy 617M was evaluated at ambient temperature and 923 K. The material showed finite cyclic lives at stresses below the yield stress (YS) at ambient temperature. However, tests conducted at 923 K which distinctly falls under the DSA regime, led to run-out (107 cycles) at stresses below and at YS. Experimental results also indicated that fatigue limit (based on run-out at 107 cycles) exceeded the YS at 923 K. This indicates that under HCF loading, fatigue failure is suppressed under the influence of DSA which in turn shifts the window of finite lives to higher stresses even above YS. Keywords DSA HCF Alloy 617M