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The abrasive wear resistance of austempered spheroidal graphite irons
Bibliography: pages 103-107.
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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Centre for Materials Engineering
2016
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| _version_ | 1867613215595167745 |
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| access_status_str | Open Access |
| author | Shepperson, S V |
| author2 | Allen, Colin |
| author_browse | Allen, Colin Shepperson, S V |
| author_facet | Allen, Colin Shepperson, S V |
| author_sort | Shepperson, S V |
| collection | Thesis |
| description | Bibliography: pages 103-107. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/17647 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:36.207Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Centre for Materials Engineering |
| publisherStr | Centre for Materials Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/17647 The abrasive wear resistance of austempered spheroidal graphite irons Shepperson, S V Allen, Colin Materials Engineering Applied Science Bibliography: pages 103-107. A study has been made of the structure and abrasive wear resistance of two austempered commercial spheroidal cast irons. Heat treatments have been carried out for different times between 2 and 120 minutes for a range of austenitising temperatures between 850°C and 950°C and austempering temperatures between 250°C and 450°C. The morphology and constitution of the resulting dual phase ferrite/austenite structure has been examined using optical and scanning electron microscopy and x-ray analysis. The maximum quantity of retained austenite in the structure has been shown to vary up to 50% and to be strongly dependent on heat treatment parameters and the composition of the iron. Laboratory abrasive wear testing has been carried out on these austempered irons and compared with the results of similar tests on a range of abrasion resistant carbon steels. All the austempered irons were found to have better abrasion resistance than proprietary abrasion resistant steels. These austempered irons derive their outstanding properties from the morphology of the dual phase ferritic/austenitic matrix coupled to the high work hardening characteristics brought about by the stress induced austenite to martensite transformation during abrasion. The influence of microstructure and mechanically induced transformation has been studied as a function of austempering temperature and time. 2016-03-11T14:24:16Z 2016-03-11T14:24:16Z 1987 Master Thesis Masters MSc (Eng) http://hdl.handle.net/11427/17647 eng application/pdf Centre for Materials Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Materials Engineering Applied Science Shepperson, S V The abrasive wear resistance of austempered spheroidal graphite irons |
| thesis_degree_str | Master's |
| title | The abrasive wear resistance of austempered spheroidal graphite irons |
| title_full | The abrasive wear resistance of austempered spheroidal graphite irons |
| title_fullStr | The abrasive wear resistance of austempered spheroidal graphite irons |
| title_full_unstemmed | The abrasive wear resistance of austempered spheroidal graphite irons |
| title_short | The abrasive wear resistance of austempered spheroidal graphite irons |
| title_sort | abrasive wear resistance of austempered spheroidal graphite irons |
| topic | Materials Engineering Applied Science |
| url | http://hdl.handle.net/11427/17647 |
| work_keys_str_mv | AT sheppersonsv theabrasivewearresistanceofaustemperedspheroidalgraphiteirons AT sheppersonsv abrasivewearresistanceofaustemperedspheroidalgraphiteirons |