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The edge flaking of tungsten carbide hardmetal cermets under repetitive impact loading
Repetitive impact tests were carried out in order to determine the edge flaking performance of several grades of hardmetal cermets. In an attempt to understand the geometry and characteristics of the crack propagation glass was impacted. Various types of cracking are observed in the glass including...
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| Format: | Thesis |
| Language: | English |
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Centre for Materials Engineering
2024
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| _version_ | 1867613183679660032 |
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| access_status_str | Open Access |
| author | Du Randt, Deon |
| author2 | Materials Engineering |
| author_browse | Du Randt, Deon Materials Engineering |
| author_facet | Materials Engineering Du Randt, Deon |
| author_sort | Du Randt, Deon |
| collection | Thesis |
| description | Repetitive impact tests were carried out in order to determine the edge flaking performance of several grades of hardmetal cermets. In an attempt to understand the geometry and characteristics of the crack propagation glass was impacted. Various types of cracking are observed in the glass including crushing, lateral cracking, median cracking and Hertzian cone cracking. The results of the glass impacting were then compared with those observed in the hardmetal cermets. Hertzian cone cracking dominates in the cermets. The fractography of the crack surfaces and crack paths, occurring in the cermets, have been studied in order to explain the edge flaking performance. Contiguity and mean-free path are found to have important influences on the edge flaking performance. The performances of the various grades of hardmetal cermets are compared in an attempt to rank them in relation to their susceptibility to edge flake. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/40614 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:06.010Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| 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:11427/40614 The edge flaking of tungsten carbide hardmetal cermets under repetitive impact loading Du Randt, Deon Materials Engineering Materials Engineering Repetitive impact tests were carried out in order to determine the edge flaking performance of several grades of hardmetal cermets. In an attempt to understand the geometry and characteristics of the crack propagation glass was impacted. Various types of cracking are observed in the glass including crushing, lateral cracking, median cracking and Hertzian cone cracking. The results of the glass impacting were then compared with those observed in the hardmetal cermets. Hertzian cone cracking dominates in the cermets. The fractography of the crack surfaces and crack paths, occurring in the cermets, have been studied in order to explain the edge flaking performance. Contiguity and mean-free path are found to have important influences on the edge flaking performance. The performances of the various grades of hardmetal cermets are compared in an attempt to rank them in relation to their susceptibility to edge flake. 2024-10-25T06:27:19Z 2024-10-25T06:27:19Z 1996 2024-07-11T12:36:50Z Thesis / Dissertation Masters MSc (Eng) http://hdl.handle.net/11427/40614 eng application/pdf Centre for Materials Engineering Faculty of Engineering and the Built Environment |
| spellingShingle | Materials Engineering Du Randt, Deon The edge flaking of tungsten carbide hardmetal cermets under repetitive impact loading |
| thesis_degree_str | Master's |
| title | The edge flaking of tungsten carbide hardmetal cermets under repetitive impact loading |
| title_full | The edge flaking of tungsten carbide hardmetal cermets under repetitive impact loading |
| title_fullStr | The edge flaking of tungsten carbide hardmetal cermets under repetitive impact loading |
| title_full_unstemmed | The edge flaking of tungsten carbide hardmetal cermets under repetitive impact loading |
| title_short | The edge flaking of tungsten carbide hardmetal cermets under repetitive impact loading |
| title_sort | edge flaking of tungsten carbide hardmetal cermets under repetitive impact loading |
| topic | Materials Engineering |
| url | http://hdl.handle.net/11427/40614 |
| work_keys_str_mv | AT durandtdeon theedgeflakingoftungstencarbidehardmetalcermetsunderrepetitiveimpactloading AT durandtdeon edgeflakingoftungstencarbidehardmetalcermetsunderrepetitiveimpactloading |