Influence of Aluminum Content on Mechanical Properties and Cold Workability of Fe-33Ni-15Co Alloy

The influence of 0.01% to 0. 25% of Aluminum content （in mass percent） on the mechanical properties and cold workability of low thermal expansion Fe-33Ni-15Co sheets in the annealed and hot rolled condition was investigated. Addition of Al up to 0.15 % resulted in the increase of ductility and tougi...

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Bibliographic Details
Published in:	Journal of iron and steel research, international Vol. 19; no. 2; pp. 67 - 72
Main Authors:	Safavi, M, Abbasi, SM, Mahdavi, R
Format:	Journal Article
Language:	English
Published:	Singapore Elsevier Ltd 01-02-2012 Springer Singapore
Subjects:	Al content Aluminum Aluminum base alloys Annealing Applied and Technical Physics cold workability Co合金 Ductility Engineering Fe-33Ni-15Co alloy Ferrous alloys Iron and steel industry Machines Manufacturing Materials Engineering Materials Science mechanical property Metallic Materials Physical Chemistry Processes Toughness Workability 力学性能加工性可操作性晶粒结构氧化反应退火孪晶铝含量 Fe-33Ni-15Co alloy mechanical property Al content cold workability
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Summary:	The influence of 0.01% to 0. 25% of Aluminum content （in mass percent） on the mechanical properties and cold workability of low thermal expansion Fe-33Ni-15Co sheets in the annealed and hot rolled condition was investigated. Addition of Al up to 0.15 % resulted in the increase of ductility and tougianess and improvement of workability. Besides, achievement of fine grain structure and increase in the amount of annealing twins caused ductility to improve. Addition of Al higher than 0.15 % led to the increase in oxidation reaction during melting process and to refine under argon atmosphere. This caused the volume fraction of Al containing inclusions to increase and consequently the ductility and toughness to decrease.
Bibliography:	11-3678/TF Fe-33Ni-15Co alloy; A1 content; mechanical property; cold workability M Safavi , S M Abbasi , R Mahdavi [1. Department of Materials Science and Engineering, Semnan University, Semnan 54896, Iram 2. Advanced Materials Research Laboratory （AMRL）, Department of Mechanical Engineering, K. N. Toosi University of Technology, Tehran 45987, Iran; 3. Department of Materials Science, Azad University, Teran 16597, Iran] The influence of 0.01% to 0. 25% of Aluminum content （in mass percent） on the mechanical properties and cold workability of low thermal expansion Fe-33Ni-15Co sheets in the annealed and hot rolled condition was investigated. Addition of Al up to 0.15 % resulted in the increase of ductility and tougianess and improvement of workability. Besides, achievement of fine grain structure and increase in the amount of annealing twins caused ductility to improve. Addition of Al higher than 0.15 % led to the increase in oxidation reaction during melting process and to refine under argon atmosphere. This caused the volume fraction of Al containing inclusions to increase and consequently the ductility and toughness to decrease. ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	1006-706X 2210-3988
DOI:	10.1016/S1006-706X(12)60062-4