This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Development of a Heat Resistant Cast Iron Alloy for Engine Exhaust Manifolds
Technical Paper
2005-01-1688
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
A new heat-resistant cast iron alloy has been developed for the exhaust manifolds of new passenger-car diesel engines. This development occurred because operating demands on exhaust manifolds have increased significantly over the past decade. These demands are due to higher exhaust gas temperatures resulting from tighter emission requirements, improved fuel efficiencies, and designs for higher specific engine power. These factors have led to much higher elevated temperature strength and oxidation resistance requirements on exhaust manifold alloys. Additionally, thermal fatigue that occurs directly as a result of thermal expansions and mechanical constraint has become an increasingly important issue.
The research detailed in this paper focused on the optimization of the chemical composition of a Si-Mo ductile iron to improve the mechanical and physical properties for use in an engine exhaust manifold. Low cycle fatigue and high temperature oxidation properties were evaluated and found to yield an improved alloy for exhaust manifold applications.
Recommended Content
Authors
Topic
Citation
Park, S., Kim, J., Kim, H., Ko, S. et al., "Development of a Heat Resistant Cast Iron Alloy for Engine Exhaust Manifolds," SAE Technical Paper 2005-01-1688, 2005, https://doi.org/10.4271/2005-01-1688.Also In
Lightweight Castings and Aluminum Alloys for Advanced Automotive Applications
Number: SP-1948; Published: 2005-04-11
Number: SP-1948; Published: 2005-04-11
References
- High temperature materials for exhaust manifold SAE Standard J 2515 SAE Warrendale, PA 1999
- Foundry Trade Journal 1979
- Birks, N. Meier, G.H. Introduction to high temperature oxidation of metal 1983
- Burghard, H.C. Fatigue and microstructure 1978 ASM Seminar H. C. Burghard
- Black, B. et al. Microstructure and dimensional stability in Si-Mo ductile irons for elevated temperature applications SAE 2002-01-2115 SAE Warrendale PA 2002