Development of Simultaneous Corrosion Barrier and Optimized Microstructure in FeCrAl Heat-Resistant Alloy for Energy Applications. Part II: The Optimized Creep-Resistant Microstructure

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• 作者：G. Pimentel ; M. M. Aranda ; J. Chao ; J. L. González-Carrasco ; C. Capdevila
• 刊名：JOM Journal of the Minerals, Metals and Materials Society
• 出版年：2015
• 出版时间：September 2015
• 年：2015
• 卷：67
• 期：9
• 页码：2055-2061
• 全文大小：1,567 KB
• 参考文献：1.R. Timmins and E. Arzt, Structural Applications of Mechanical Alloying, ed. F.H. Froes and J.J. deBarbadillo (Materials Park: ASM International, 1990), p. 67.
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• 作者单位：G. Pimentel (1)
  M. M. Aranda (1)
  J. Chao (1)
  J. L. González-Carrasco (1) (2)
  C. Capdevila (1)
  
  1. Centro Nacional de Investigaciones Metalúrgicas (CENIM), Consejo Superior de Investigaciones Científicas (CSIC), Avda. Gregorio del Amo, 8, 28040, Madrid, Spain
  2. Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Madrid, Spain
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Materials Science
  Metallic Materials
  Nanotechnology
  Crystallography
  
• 出版者：Springer Boston
• ISSN：1543-1851

文摘

The first part of this two-part study reported the possibility of simultaneously generating a dense, self-healing α-alumina layer by thermal oxidation and a coarse-grained microstructure with a potential goodness for high-temperature creep resistance in a FeCrAl oxide dispersion-strengthened ferritic alloy that was cold deformed after hot rolling and extrusion. In this second part, the factors affecting the formation of the coarse-grained microstructure such as strain gradients induced during the rolling process are analyzed. It is concluded that larger strain gradients lead to more refined and more isotropic grain structures.