Study of wear behaviour of ductile iron subjected to two step austempering
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Ritha Kumari
und P. Prasad Rao
Abstract
An investigation was carried out to examine the influence of two step austempering on microstructural parameters and the wear behaviour of austempered ductile iron. Ductile iron was austenitised at 900°C for 30 min, and then austempered successively at two different temperatures. It was first austempered at 300°C for different durations from 2 min to 30 min and subsequently austempered at 400°C for 2 h, after which it was quenched to room temperature. Resulting microstructures were characterised through optical microscopy and X-ray diffraction. Mechanical properties were studied through hardness measurement and tensile testing. Wear studies were carried out using a pin-on-disc machine. Wear rate was found to decrease with increasing time at the first step temperature of 300°C. At short austempering times at 300°C, the amount of austenite was instrumental in improving the wear resistance through formation of deformation induced martensite. Wear rate was found to depend on yield strength, austenite content and its carbon content.
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© 2010, Carl Hanser Verlag, München
Artikel in diesem Heft
- Contents
- Contents
- Basic
- Thermodynamic modeling of the Pt–Zr system
- Experimental investigation and thermodynamic prediction of the Ga–Sb–Sn phase equilibria
- Calculation of the viscosity of the liquid ternary Ag–Au–Sn system
- Thermophysical properties of liquid tin–bismuth alloys
- A comparative AFM study of carbon alloyed Mo–Se–C and W–S–C films for tribological applications
- Luminescence of Fe-substituted ZnWO4 powders synthesized by aqueous solution reaction
- Electromagnetic radiation during plastic deformation under unrestricted quasi-static compression in metals and alloys
- Applied
- Microstructure and mechanical properties of Fe3Al–TiC composites
- Study of wear behaviour of ductile iron subjected to two step austempering
- Effect of annealing on formability and crystallographic textures of aluminium 5052 alloy sheets
- The use of fly ash and basaltic pumice as additives in the productionof clay fired brick in Turkey
- Insulation properties of bricks made with cotton and textile ash wastes
- Effects of homogenizing and aging treatments on the microstructure and microhardness of an Nb-silicide based ultrahigh temperature alloy
- Alloys with thermal expansion matching to electrolyte materials for solid oxide fuel cells
- Simulation-based study of the compensation coil method applied to ferrite nanometric powders
- DGM News
- Zum 75. Geburtstag von Prof. Dr.-Ing. habil. Peter Klimanek
Artikel in diesem Heft
- Contents
- Contents
- Basic
- Thermodynamic modeling of the Pt–Zr system
- Experimental investigation and thermodynamic prediction of the Ga–Sb–Sn phase equilibria
- Calculation of the viscosity of the liquid ternary Ag–Au–Sn system
- Thermophysical properties of liquid tin–bismuth alloys
- A comparative AFM study of carbon alloyed Mo–Se–C and W–S–C films for tribological applications
- Luminescence of Fe-substituted ZnWO4 powders synthesized by aqueous solution reaction
- Electromagnetic radiation during plastic deformation under unrestricted quasi-static compression in metals and alloys
- Applied
- Microstructure and mechanical properties of Fe3Al–TiC composites
- Study of wear behaviour of ductile iron subjected to two step austempering
- Effect of annealing on formability and crystallographic textures of aluminium 5052 alloy sheets
- The use of fly ash and basaltic pumice as additives in the productionof clay fired brick in Turkey
- Insulation properties of bricks made with cotton and textile ash wastes
- Effects of homogenizing and aging treatments on the microstructure and microhardness of an Nb-silicide based ultrahigh temperature alloy
- Alloys with thermal expansion matching to electrolyte materials for solid oxide fuel cells
- Simulation-based study of the compensation coil method applied to ferrite nanometric powders
- DGM News
- Zum 75. Geburtstag von Prof. Dr.-Ing. habil. Peter Klimanek