On the Relationship Between Cyclic Deformation Behavior and Slip Mode in 316LN Stainless Steel with Varying Nitrogen Content

详细信息    查看全文

• 作者：G. V. Prasad Reddy ; R. Sandhya ; S. Sankaran…
• 关键词：316LN stainless steel ; Nitrogen ; Low cycle fatigue ; Slip mode ; Cyclic softening/saturation
• 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：303-308
• 全文大小：1,293 KB
• 参考文献：1.Prasad Reddy G V, Sandhya R, Sankaran S, and Mathew M D, Metall Mater Trans A 45 (2014) 5044.CrossRef
  2.Gerland M, Alain R, Ait Saadi B, and Mendez J, Mater Sci Eng 229 (1997) 68.CrossRef
  3.Xia Y B, and Wang Z G, Mater Sci Eng A 151 (1992) 29.CrossRef
  4.Degallaix S, Dickson J I, and Foct J, in Proc Int Conf on High Nitrogen Steels, HNS’88, (eds) Foct J, and Hendry A, Lille, France (1989), p 380.
  5.Gerland M, Mendez J, Violan P, and Ait Saadi B, Mater Sci Eng 118 (1989) 83.CrossRef
  6.Jenkins C F, and Smith G V, Trans Metall Soc AIME 245 (1969) 2149.
  7.Samuel K G, Mannan S L, and Rodriguez P, Acta Metall 36 (1988) 2323.CrossRef
  8.Oda K, Kondo N and Shibata K, ISIJ Int 30 (1990) 625.CrossRef
  
• 作者单位：G. V. Prasad Reddy (1)
  R. Sandhya (1)
  S. Sankaran (2)
  K. Laha (1)
  
  1. Indira Gandhi Center for Atomic Research, Kalpakkam, 603102, India
  2. Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, 600036, 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

The relationship between cyclic deformation, slip-mode and dislocation structures is investigated in 316LN stainless steel (with 0.07–0.22 wt% Nitrogen) subjected to low cycle fatigue at temperatures in the range 300–873 K and at a 0.6 % strain amplitude. Irrespective of the nitrogen content, cyclic softening/saturation occupied a large fraction of fatigue life at temperatures <773 K. The end-of-life dislocation structures (e.g. dislocation cells, planar slip-bands) characterizing the cyclic softening/saturation belong to wavy/mixed/planar slip-modes of deformation. On the other hand at temperatures ≥773 K, similar dislocation structures are noticed to be associated with significant cyclic strengthening with limited softening. The differences in the above deformation behavior is found to be controlled not by the nature of slip-mode but by the consequences of dynamic strain aging occurrence (e.g. significant cyclic strengthening and pronounced serrations) which are noticed to vary in the temperature range 573–873 K. Maximum fatigue life is observed at 0.11–0.14 wt% N that induced mixed mode of deformation. Keywords 316LN stainless steel Nitrogen Low cycle fatigue Slip mode Cyclic softening/saturation