Microstructure and mechanical properties of CuNiMo austempered ductile iron
Microstructure and mechanical properties of Cu, Ni and Mo alloyed cast ductile iron have been investigated after austempering. Samples were austenitised at 860oC for 1h and then austempered at 320oC and 400oC in the interval from 0,5 to 5h. The X-ray diffraction technique and the light microscopy we...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
University of Belgrade, Technical Faculty, Bor
2004-01-01
|
| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2004/1450-53390401011E.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832570497506738176 |
|---|---|
| author | Erić Olivera Jovanović Marina P. Šiđanin Leposava P. Rajnović Dragan M. |
| author_facet | Erić Olivera Jovanović Marina P. Šiđanin Leposava P. Rajnović Dragan M. |
| author_sort | Erić Olivera |
| collection | DOAJ |
| description | Microstructure and mechanical properties of Cu, Ni and Mo alloyed cast ductile iron have been investigated after austempering. Samples were austenitised at 860oC for 1h and then austempered at 320oC and 400oC in the interval from 0,5 to 5h. The X-ray diffraction technique and the light microscopy were utilized to investigate the bainitic transformation, while tensile and impact tests were performed for characterization of mechanical properties. By austempering at 320oC in the range between 2 and 5h, a microstructure typical for austempered ductile iron was produced, i.e. a mixture of free bainitic ferrite and highly carbon enriched retained austenite. The characteristic of the whole range of austempering at 400oC is the appearance of martensitic structure. The maximum impact energy (133 J) coincides with the maximum value of volume fraction of retained austenite that was obtained after 2,5h of austempering at 320oC. The appearance of martensite during austempering at 400oC is the main cause for much lower tensile properties than at 320oC. |
| format | Article |
| id | doaj-art-57a50b9246c6445fadf0280277138f58 |
| institution | Kabale University |
| issn | 1450-5339 |
| language | English |
| publishDate | 2004-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-57a50b9246c6445fadf0280277138f582025-02-02T15:19:40ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392004-01-01401111910.2298/JMMB0401011EMicrostructure and mechanical properties of CuNiMo austempered ductile ironErić OliveraJovanović Marina P.Šiđanin Leposava P.Rajnović Dragan M.Microstructure and mechanical properties of Cu, Ni and Mo alloyed cast ductile iron have been investigated after austempering. Samples were austenitised at 860oC for 1h and then austempered at 320oC and 400oC in the interval from 0,5 to 5h. The X-ray diffraction technique and the light microscopy were utilized to investigate the bainitic transformation, while tensile and impact tests were performed for characterization of mechanical properties. By austempering at 320oC in the range between 2 and 5h, a microstructure typical for austempered ductile iron was produced, i.e. a mixture of free bainitic ferrite and highly carbon enriched retained austenite. The characteristic of the whole range of austempering at 400oC is the appearance of martensitic structure. The maximum impact energy (133 J) coincides with the maximum value of volume fraction of retained austenite that was obtained after 2,5h of austempering at 320oC. The appearance of martensite during austempering at 400oC is the main cause for much lower tensile properties than at 320oC.http://www.doiserbia.nb.rs/img/doi/1450-5339/2004/1450-53390401011E.pdfaustemperingductile cast ironretained austeniteimpact energy |
| spellingShingle | Erić Olivera Jovanović Marina P. Šiđanin Leposava P. Rajnović Dragan M. Microstructure and mechanical properties of CuNiMo austempered ductile iron Journal of Mining and Metallurgy. Section B: Metallurgy austempering ductile cast iron retained austenite impact energy |
| title | Microstructure and mechanical properties of CuNiMo austempered ductile iron |
| title_full | Microstructure and mechanical properties of CuNiMo austempered ductile iron |
| title_fullStr | Microstructure and mechanical properties of CuNiMo austempered ductile iron |
| title_full_unstemmed | Microstructure and mechanical properties of CuNiMo austempered ductile iron |
| title_short | Microstructure and mechanical properties of CuNiMo austempered ductile iron |
| title_sort | microstructure and mechanical properties of cunimo austempered ductile iron |
| topic | austempering ductile cast iron retained austenite impact energy |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2004/1450-53390401011E.pdf |
| work_keys_str_mv | AT ericolivera microstructureandmechanicalpropertiesofcunimoaustemperedductileiron AT jovanovicmarinap microstructureandmechanicalpropertiesofcunimoaustemperedductileiron AT siđaninleposavap microstructureandmechanicalpropertiesofcunimoaustemperedductileiron AT rajnovicdraganm microstructureandmechanicalpropertiesofcunimoaustemperedductileiron |