Interfacial Microstructure and Properties of Clad Rebar Prepared by Clean-Interface Assembly and Vacuum Hot-Rolling
Stainless steel cladded rebars were successfully prepared by clean-interface assembly and vacuum hot-rolling process. The interfacial microstructure and properties of the clad rebars were investigated by scanning electron microscope (SVM), transmission electron microscope (TEM), and electron probe X...
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MDPI AG
2022-09-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/19/9519 |
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| author | Zhen Li Jianping Tan Xuehai Qian Yong Xiang Lei Zeng Yang Zhao |
| author_facet | Zhen Li Jianping Tan Xuehai Qian Yong Xiang Lei Zeng Yang Zhao |
| author_sort | Zhen Li |
| collection | DOAJ |
| description | Stainless steel cladded rebars were successfully prepared by clean-interface assembly and vacuum hot-rolling process. The interfacial microstructure and properties of the clad rebars were investigated by scanning electron microscope (SVM), transmission electron microscope (TEM), and electron probe X-ray microanalyser (EPMA). The results demonstrated that owing to the diffusion of carbon, decarburised (roughly 50 μm) and composite zones (roughly 60 μm) formed on each side of the composite interface. The decarburized zone features a single ferrite texture, hence, a relatively low micro-hardness of 138HV while, due to the large amount of martensite formed within it, the composite zone has a relatively high micro-hardness of 218HV. The salt spray test showed that the corrosion rate of the clad rebars is close to that of the round stainless bars, and is approximately one-tenth that of the carbon rebars. In addition, a layered multipass welding process was used to produce a cladding joint, which was determined to have a tensile strength greater than the standard value of the parent material and excellent corrosion resistance. |
| first_indexed | 2024-03-09T22:06:13Z |
| format | Article |
| id | doaj.art-1814bd77cdfd44b5966cdbb704da72f9 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T22:06:13Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-1814bd77cdfd44b5966cdbb704da72f92023-11-23T19:40:56ZengMDPI AGApplied Sciences2076-34172022-09-011219951910.3390/app12199519Interfacial Microstructure and Properties of Clad Rebar Prepared by Clean-Interface Assembly and Vacuum Hot-RollingZhen Li0Jianping Tan1Xuehai Qian2Yong Xiang3Lei Zeng4Yang Zhao5School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, ChinaSchool of Mechanical and Electrical Engineering, Central South University, Changsha 410083, ChinaSchool of Mechanical and Electrical Engineering, Central South University, Changsha 410083, ChinaHunan Provincial Engineering Research Centre for Laminated Metal Composites, Changsha 410083, ChinaSchool of Mechanical and Electrical Engineering, Central South University, Changsha 410083, ChinaSchool of Mechanical and Electrical Engineering, Central South University, Changsha 410083, ChinaStainless steel cladded rebars were successfully prepared by clean-interface assembly and vacuum hot-rolling process. The interfacial microstructure and properties of the clad rebars were investigated by scanning electron microscope (SVM), transmission electron microscope (TEM), and electron probe X-ray microanalyser (EPMA). The results demonstrated that owing to the diffusion of carbon, decarburised (roughly 50 μm) and composite zones (roughly 60 μm) formed on each side of the composite interface. The decarburized zone features a single ferrite texture, hence, a relatively low micro-hardness of 138HV while, due to the large amount of martensite formed within it, the composite zone has a relatively high micro-hardness of 218HV. The salt spray test showed that the corrosion rate of the clad rebars is close to that of the round stainless bars, and is approximately one-tenth that of the carbon rebars. In addition, a layered multipass welding process was used to produce a cladding joint, which was determined to have a tensile strength greater than the standard value of the parent material and excellent corrosion resistance.https://www.mdpi.com/2076-3417/12/19/9519stainless steel clad rebarclean-interface assemblycorrosion ratelayered multipass welding |
| spellingShingle | Zhen Li Jianping Tan Xuehai Qian Yong Xiang Lei Zeng Yang Zhao Interfacial Microstructure and Properties of Clad Rebar Prepared by Clean-Interface Assembly and Vacuum Hot-Rolling Applied Sciences stainless steel clad rebar clean-interface assembly corrosion rate layered multipass welding |
| title | Interfacial Microstructure and Properties of Clad Rebar Prepared by Clean-Interface Assembly and Vacuum Hot-Rolling |
| title_full | Interfacial Microstructure and Properties of Clad Rebar Prepared by Clean-Interface Assembly and Vacuum Hot-Rolling |
| title_fullStr | Interfacial Microstructure and Properties of Clad Rebar Prepared by Clean-Interface Assembly and Vacuum Hot-Rolling |
| title_full_unstemmed | Interfacial Microstructure and Properties of Clad Rebar Prepared by Clean-Interface Assembly and Vacuum Hot-Rolling |
| title_short | Interfacial Microstructure and Properties of Clad Rebar Prepared by Clean-Interface Assembly and Vacuum Hot-Rolling |
| title_sort | interfacial microstructure and properties of clad rebar prepared by clean interface assembly and vacuum hot rolling |
| topic | stainless steel clad rebar clean-interface assembly corrosion rate layered multipass welding |
| url | https://www.mdpi.com/2076-3417/12/19/9519 |
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