Thermomechanical Processing of Fe-6.9Al-2Cr-0.88C Steel: Intercritical Annealing Followed by Quench Tempering

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• 作者：Ahmed Ismail Zaky Farahat…
• 刊名：Metallurgical and Materials Transactions A
• 出版年：2015
• 出版时间：January 2015
• 年：2015
• 卷：46
• 期：1
• 页码：199-204
• 全文大小：5,914 KB
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• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Materials Science
  Metallic Materials
  Structural Materials
  Physical Chemistry
  Ceramics,Glass,Composites,Natural Materials
  
• 出版者：Springer Boston
• ISSN：1543-1940

文摘

A hot forged Fe-0.88?pct C-6.9?pct Al steel was intercritically annealed at temperatures in the range of 1173?K to 1283?K (900?°C to 1010?°C), and subsequently tempered at 623?K (350?°C) to enhance the mechanical properties by microstructure modification. Room temperature compression tests were carried out to evaluate the influence of the intercritical annealing temperature on the mechanical properties. A substructure was present in the microstructure after each intercritical annealing treatment. The substructure was absent after annealing at 1263?K (990?°C) and higher temperatures. Over-aging occurred when the annealing temperature was increased to 1283?K (1010?°C). A remarkable increase in strength and ductility was achieved after annealing at 1263?K (990?°C).