The automotive industry is facing a challenge as efficiency improvements are required to address the strict emission norms which in turn requires high performance downsized, lightweight IC engines. The increasing demand for lightweight engine needs high strength to weight ratio materials. To meet high strength to weight ratio, castings are preferable. However due to strength limitations for critical crankshaft applications, it forces to use costly forgings such as micro alloyed forging steel and Martensitic (after heat treatment) forging steel. To reduce the cost impact, high strength Austempered Ductile iron (ADI) casting is developed for crankshaft applications to substitute steel forgings. Austempered Ductile Iron is having an excellent mechanical properties due to aus-ferritic structure. The improved properties of developed ADI Crankshaft over steel forged crankshaft offers additional weight advantage. The ADI Crankshaft was subjected to rig test and meets the fatigue and durability life at the required Factor of Safety.
Automotive Crankshaft Development in Austempered Ductile Iron Casting
Sae Technical Papers
International Conference on Automotive Materials and Manufacturing AMM 2023 ; 2023
25.05.2023
Aufsatz (Konferenz)
Englisch
Iron , Crankshafts , Engines , Heat treatment , Casting , Materials properties , Steel
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