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Evaluation of Microalloyed Steel for Articulated Piston Applications in Heavy Duty Diesel Engines
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 06, 2000 by SAE International in United States
Annotation ability available
Event: SAE 2000 World Congress
AISI-4140H steel has been used as articulated piston crown material in heavy-duty engines. With the driving force for reducing manufacturing cost, microalloyed steel (MAS) was identified as a low-cost material to replace 4140H steel. In order to determine the feasibility of using MAS to replace 4140H steel, a test program was initiated to fully evaluate the material properties of MAS and to compare them to those of the baseline 4140H steel. The physical and mechanical properties of both materials from room temperature to 550°C were evaluated. The effect of long term thermal exposure on the material properties was also studied. Some engine tests were also conducted to evaluate the performance of the articulated pistons made with both materials.
The inherently lower strength of MAS as compared to 4140H steel, requires a total re-design of the piston for the utilization of MAS as a low-cost replacement material for 4140H steel. Temperature control is critical to the application of MAS at high engine ratings. Through carefully controlled abuse testing, the application of MAS as an articulated piston material can be successful.
CitationChen, Y. and Worden, J., "Evaluation of Microalloyed Steel for Articulated Piston Applications in Heavy Duty Diesel Engines," SAE Technical Paper 2000-01-1232, 2000, https://doi.org/10.4271/2000-01-1232.
- Burnett M. E. “Laboratory and Production Forging of a Vanadium Microalloy Crankshaft Steel” Processing Microstructure and Properties of HSLA Steel DeArdo A.J. The Minerals, Metals & Materials Society 1988 415 424
- Hashimoto H. Serino Y. Aoyama Y. “Non Heat-Treated Vanadium Alloyed Steel Crankshaft” SAE Technical Paper 820125 1982
- Cristinacce M. Reynolds P.E. “The Current Status of the Development and Use of Air Cooled Steels for the Automotive Industry” Microalloyed Bar and Forging Steels Van Tyne C.J. Krauss G. Matlock D.K. The Minerals, Metals & Materials Society 1996 29 43
- Nakamura S. Mizuno K. Sato Y. “Development of High Fatigue Strength Free Machining Microalloyed Steels for Connecting Rods” SAE Technical Paper 930619 1993
- Cho W-S. Kim K-S. Jo E-K. Oh S-T “Development of Medium Carbon Microalloyed Steel Forgings for Automotive Components” SAE Technical Paper 940785 1994
- Korchynsky M. Paules J. R. “Microalloyed Forging Steels- A State of the Art Review” SAE Technical Paper 890801 1989
- Gladman T. “Microalloyed Forging Steels - Solubility Revisited” Microalloyed Bar and Forging Steels Van Tyne C.J. Krauss G. Matlock D.K. The Minerals, Metals & Materials Society 1996 3 16