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The Development of a New Austenitic Stainless Steel Exhaust Valve Material
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English
Abstract
The durability requirements of the diesel engine exhaust valve have been satisfied through the use of several iron, nickel, and cobalt base alloys. There have been cases where iron base austenitic alloys were found deficient in one or more physical or mechanical properties, and they were replaced with a nickel or cobalt base super alloy, often with a wide margin of design safety. Strategic alloying elements such as cobalt, tungsten, and nickel have escalated in price at a significant rate, thus increasing the cost of the super alloys. An improved austenitic alloy has been developed to provide adequate performance while retaining the cost effectiveness of iron base systems. During this development program, the alloy was designed to minimize its susceptibility to manufacturing problems which have been associated with prior valve materials.
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Citation
Jenkins, L. and Larson, J., "The Development of a New Austenitic Stainless Steel Exhaust Valve Material," SAE Technical Paper 780245, 1978, https://doi.org/10.4271/780245.Also In
References
- Chaudhuri Asim “Hot Corrosion of Diesel Engine Exhaust Valves” SAE 730679 June 1973
- Smallman R. E. “Modern Physical Metallurgy” Butterworths Wash. 1963
- Christian J. W. “The Theory of Transformations in Metals and Alloys” Pergamon Press 1965
- Tien J. K. Ansell G. S. “Alloy and Microstructural Design” Materials Science and Technology Series Academic Press 1976