Novel Tensile Test Jig and Mechanical Properties of WC-Co Synthesized by SHIP and HIP Process
Tungsten carbide-cobalt (WC-Co) alloys have various mechanical properties according to their Co content and manufacturing method. High-strength materials such as WC-Co alloys are usually manufactured using various sintering methods. In this study, WC-Co was compared according to the Co content and m...
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MDPI AG
2021-05-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/6/884 |
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| author | A-Ra Jo Ji-Seob An Sun-Hyung Kim Myeong-Sik Jeong Young-Hoon Moon Sun-Kwang Hwang |
| author_facet | A-Ra Jo Ji-Seob An Sun-Hyung Kim Myeong-Sik Jeong Young-Hoon Moon Sun-Kwang Hwang |
| author_sort | A-Ra Jo |
| collection | DOAJ |
| description | Tungsten carbide-cobalt (WC-Co) alloys have various mechanical properties according to their Co content and manufacturing method. High-strength materials such as WC-Co alloys are usually manufactured using various sintering methods. In this study, WC-Co was compared according to the Co content and manufacturing method using the sinter-hot isostatic pressing process. Furthermore, an additional test was performed to investigate the effect of post-hot isostatic pressing (HIP) treatment on the mechanical properties. To compare tensile strength, threaded end and shoulder end specimens are generally applied in axial tensile testing with hard metals. However, it is extremely difficult to shape WC-Co by machining. A tensile testing jig for a shoulder end specimen is, therefore, proposed. Tensile tests were conducted using the proposed jig, and microstructure, hardness, and impact tests were carried out to compare the mechanical properties. The microstructure evolution was obtained by decreasing the Co content and applying the HIP treatment, resulting in changes in Young’s modulus and strength. The results indicated that the proposed jig of the axial tensile test could be applied to the extremely hard WC-Co, and the mechanical properties of WC-Co could be modified by the Co content and HIP treatment control. |
| first_indexed | 2024-03-10T10:55:17Z |
| format | Article |
| id | doaj.art-1156fa93963542f199b7b12cfbe24846 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T10:55:17Z |
| publishDate | 2021-05-01 |
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| series | Metals |
| spelling | doaj.art-1156fa93963542f199b7b12cfbe248462023-11-21T21:53:42ZengMDPI AGMetals2075-47012021-05-0111688410.3390/met11060884Novel Tensile Test Jig and Mechanical Properties of WC-Co Synthesized by SHIP and HIP ProcessA-Ra Jo0Ji-Seob An1Sun-Hyung Kim2Myeong-Sik Jeong3Young-Hoon Moon4Sun-Kwang Hwang5Mechanical Components and Materials R&D Group, Korea Institute of Industrial Technology, Daegu 42994, KoreaMechanical Components and Materials R&D Group, Korea Institute of Industrial Technology, Daegu 42994, KoreaMechanical Components and Materials R&D Group, Korea Institute of Industrial Technology, Daegu 42994, KoreaMechanical Components and Materials R&D Group, Korea Institute of Industrial Technology, Daegu 42994, KoreaDepartment of Mechanical Engineering, Pusan National University, Busan 46241, KoreaMechanical Components and Materials R&D Group, Korea Institute of Industrial Technology, Daegu 42994, KoreaTungsten carbide-cobalt (WC-Co) alloys have various mechanical properties according to their Co content and manufacturing method. High-strength materials such as WC-Co alloys are usually manufactured using various sintering methods. In this study, WC-Co was compared according to the Co content and manufacturing method using the sinter-hot isostatic pressing process. Furthermore, an additional test was performed to investigate the effect of post-hot isostatic pressing (HIP) treatment on the mechanical properties. To compare tensile strength, threaded end and shoulder end specimens are generally applied in axial tensile testing with hard metals. However, it is extremely difficult to shape WC-Co by machining. A tensile testing jig for a shoulder end specimen is, therefore, proposed. Tensile tests were conducted using the proposed jig, and microstructure, hardness, and impact tests were carried out to compare the mechanical properties. The microstructure evolution was obtained by decreasing the Co content and applying the HIP treatment, resulting in changes in Young’s modulus and strength. The results indicated that the proposed jig of the axial tensile test could be applied to the extremely hard WC-Co, and the mechanical properties of WC-Co could be modified by the Co content and HIP treatment control.https://www.mdpi.com/2075-4701/11/6/884WC-Cosinter-HIPhigh-strength steeltensile testjig |
| spellingShingle | A-Ra Jo Ji-Seob An Sun-Hyung Kim Myeong-Sik Jeong Young-Hoon Moon Sun-Kwang Hwang Novel Tensile Test Jig and Mechanical Properties of WC-Co Synthesized by SHIP and HIP Process Metals WC-Co sinter-HIP high-strength steel tensile test jig |
| title | Novel Tensile Test Jig and Mechanical Properties of WC-Co Synthesized by SHIP and HIP Process |
| title_full | Novel Tensile Test Jig and Mechanical Properties of WC-Co Synthesized by SHIP and HIP Process |
| title_fullStr | Novel Tensile Test Jig and Mechanical Properties of WC-Co Synthesized by SHIP and HIP Process |
| title_full_unstemmed | Novel Tensile Test Jig and Mechanical Properties of WC-Co Synthesized by SHIP and HIP Process |
| title_short | Novel Tensile Test Jig and Mechanical Properties of WC-Co Synthesized by SHIP and HIP Process |
| title_sort | novel tensile test jig and mechanical properties of wc co synthesized by ship and hip process |
| topic | WC-Co sinter-HIP high-strength steel tensile test jig |
| url | https://www.mdpi.com/2075-4701/11/6/884 |
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