The Effect of Fe on the Mechanical Properties of Stellite 6
Stellite 6 is a Co-based alloy with excellent wear and corrosion resistance, resulting in it frequently being used as a hard-facing material. The main defect that occurs in the hard-facing process is the peeling of the hard-facing layer, which is caused by thermal stress due to differences in therma...
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| Format: | Article |
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MDPI AG
2024-02-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/14/2/244 |
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| author | Min Ah Baek Gyu Byeong Kang Gyeong Chan Suk Seong Chan Hong Young Do Kim Tae-Wook Na |
| author_facet | Min Ah Baek Gyu Byeong Kang Gyeong Chan Suk Seong Chan Hong Young Do Kim Tae-Wook Na |
| author_sort | Min Ah Baek |
| collection | DOAJ |
| description | Stellite 6 is a Co-based alloy with excellent wear and corrosion resistance, resulting in it frequently being used as a hard-facing material. The main defect that occurs in the hard-facing process is the peeling of the hard-facing layer, which is caused by thermal stress due to differences in thermal expansion coefficients. This peeling phenomenon can be prevented by using a material with an intermediate coefficient of thermal expansion as a buffer layer. Component surfaces are strengthened through a technique called hard-facing, which increases the components’ resistance to wear. In order to increase the wear and corrosion resistance of metal components, a high-hardness substance is usually coated onto their surface. Grinding is carried out to smooth the surface after the material is welded onto the base component. Small pieces, also referred to as “scrap”, are frequently produced during this surface machining procedure. In the hard-facing process, scrap containing a mixture of base material and Stellite 6 is generated during material processing. If this scrap can be used as a buffer layer, the cost of raw materials can be reduced through the recycling of resources, and the overall energy consumption for recycling can be reduced because the process of separating Stellite 6 from the scrap is eliminated. In this study, the physical properties of Stellite 6 with Fe added were explored to determine whether the scrap produced could be used as a buffer layer. When iron was added to the mixture, the amount of carbide decreased, in addition to the wear resistance and hardness decreasing. Regarding the thermal expansion coefficient, the thermal expansion coefficient of Stellite 6 was found to be 15.879 μm/m·°C at 300 °C, and that of Stellite 6 with 40% Fe added was found to be 14.313 μm /m·°C at 300 °C. The thermal expansion coefficient of carbon steel is reported to be 12.8 μm /m·°C at 300 °C; thus, Stellite 6 with 40% Fe can be used as a buffer layer for Stellite 6 and carbon steel because of its suitable thermal expansion coefficient. |
| first_indexed | 2024-03-07T22:21:00Z |
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| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-07T22:21:00Z |
| publishDate | 2024-02-01 |
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| record_format | Article |
| series | Metals |
| spelling | doaj.art-8751ede44ef24afa898f0494f5f9b8f82024-02-23T15:27:28ZengMDPI AGMetals2075-47012024-02-0114224410.3390/met14020244The Effect of Fe on the Mechanical Properties of Stellite 6Min Ah Baek0Gyu Byeong Kang1Gyeong Chan Suk2Seong Chan Hong3Young Do Kim4Tae-Wook Na5Functional Materials and Components R&D Group, Korea Institute of Industrial Technology, Gangneung 25440, Republic of KoreaFunctional Materials and Components R&D Group, Korea Institute of Industrial Technology, Gangneung 25440, Republic of KoreaFunctional Materials and Components R&D Group, Korea Institute of Industrial Technology, Gangneung 25440, Republic of KoreaFunctional Materials and Components R&D Group, Korea Institute of Industrial Technology, Gangneung 25440, Republic of KoreaDivision of Materials Science and Engineering, Hanyang University, Seoul 133791, Republic of KoreaFunctional Materials and Components R&D Group, Korea Institute of Industrial Technology, Gangneung 25440, Republic of KoreaStellite 6 is a Co-based alloy with excellent wear and corrosion resistance, resulting in it frequently being used as a hard-facing material. The main defect that occurs in the hard-facing process is the peeling of the hard-facing layer, which is caused by thermal stress due to differences in thermal expansion coefficients. This peeling phenomenon can be prevented by using a material with an intermediate coefficient of thermal expansion as a buffer layer. Component surfaces are strengthened through a technique called hard-facing, which increases the components’ resistance to wear. In order to increase the wear and corrosion resistance of metal components, a high-hardness substance is usually coated onto their surface. Grinding is carried out to smooth the surface after the material is welded onto the base component. Small pieces, also referred to as “scrap”, are frequently produced during this surface machining procedure. In the hard-facing process, scrap containing a mixture of base material and Stellite 6 is generated during material processing. If this scrap can be used as a buffer layer, the cost of raw materials can be reduced through the recycling of resources, and the overall energy consumption for recycling can be reduced because the process of separating Stellite 6 from the scrap is eliminated. In this study, the physical properties of Stellite 6 with Fe added were explored to determine whether the scrap produced could be used as a buffer layer. When iron was added to the mixture, the amount of carbide decreased, in addition to the wear resistance and hardness decreasing. Regarding the thermal expansion coefficient, the thermal expansion coefficient of Stellite 6 was found to be 15.879 μm/m·°C at 300 °C, and that of Stellite 6 with 40% Fe added was found to be 14.313 μm /m·°C at 300 °C. The thermal expansion coefficient of carbon steel is reported to be 12.8 μm /m·°C at 300 °C; thus, Stellite 6 with 40% Fe can be used as a buffer layer for Stellite 6 and carbon steel because of its suitable thermal expansion coefficient.https://www.mdpi.com/2075-4701/14/2/244Stellite 6hard-facingbuffer layer |
| spellingShingle | Min Ah Baek Gyu Byeong Kang Gyeong Chan Suk Seong Chan Hong Young Do Kim Tae-Wook Na The Effect of Fe on the Mechanical Properties of Stellite 6 Metals Stellite 6 hard-facing buffer layer |
| title | The Effect of Fe on the Mechanical Properties of Stellite 6 |
| title_full | The Effect of Fe on the Mechanical Properties of Stellite 6 |
| title_fullStr | The Effect of Fe on the Mechanical Properties of Stellite 6 |
| title_full_unstemmed | The Effect of Fe on the Mechanical Properties of Stellite 6 |
| title_short | The Effect of Fe on the Mechanical Properties of Stellite 6 |
| title_sort | effect of fe on the mechanical properties of stellite 6 |
| topic | Stellite 6 hard-facing buffer layer |
| url | https://www.mdpi.com/2075-4701/14/2/244 |
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