News
Niobium alloying in grey cast iron for vehicle brake discs
Tweet
ABSTRACT.
Niobium when alloyed to hypo- as well as hypereutectic iron has several beneficial metallurgical effects. It refines the eutectic cell size, graphite structure and also the lamellae spacing of the pearlite matrix. Nb affects the nucleation of graphite and can hence support inoculation. It also narrows down the temperature hysteresis between austenite and pearlite formation, which is important to cyclic heating.
Finally, the ultra hard NbC particles formed lead to a markedly increased wear resistance of the material. The paper elucidates how these effects of Nb can be used to make brake discs with better properties and demonstrates processing benefits in the production of cast iron. Finally some examples of application in heavy trucks and recent passenger cars are given.
You can see this complete technical paper and others, free of charge at http://foundrygate.com/en/artigos
Source: MS&T
Tweet
Related News
- Stay Ahead in Nonferrous and Lightweight. Follow Diecasting & Nonferrous China 2026
- European Foundry Industry in Transition – New Opportunities Through the Defense Sector
- Global pig iron production fell by 4.4% y/y in October
- India sharply increased iron ore imports by more than 200% y/y in January-October
- EU plans to limit exports of aluminium scrap
- Calderys Group celebrates 160 years of innovation and industrial excellence
- Foundries in Transition: Why Humanoid Robots Are Now in Demand
- Iron ore exports from Brazil increased by 5.7% y/y in January-October
- See all News
