A simultaneous improvement of the strength and plasticity of spring steels by replacing Mo with Si
| Autor: | Baolin Wang, X.W. Li, B. Xia, Peng Zhang, Zenglei Zhang, Y.K. Zhu |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Metallurgy 02 engineering and technology Plasticity 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Spring steel Key factors Mechanics of Materials Spring (device) 0103 physical sciences General Materials Science Dislocation 0210 nano-technology Strengthening mechanisms of materials Hydrogen embrittlement |
| Zdroj: | Materials Science and Engineering: A. 820:141516 |
| ISSN: | 0921-5093 |
| Popis: | A synchronous improvement of the strength and plasticity (SISP) is a significantly important subject attracted by many researchers. In this study, the key factors affecting the plasticity and strength of spring steels were analyzed and discussed in detail. Meanwhile, the differences in the microstructures and fractographies between two Cr–Mn steels were compared. It is found that the 50CrMnSiVNb spring steel has higher strength as a result of the dislocation strengthening, the solution strengthening caused by the Si solid solution as well as higher work-hardening capacity by comparing four strengthening mechanisms and work-hardening capacity. Furthermore, the better plasticity of the 50CrMnSiVNb steel may be mainly attributed to the lighter banded segregation and hydrogen embrittlement compared with the 50CrMnMoVNb steel. This study may enrich the fundamental knowledge regarding how to optimize the composition of spring steel and provide some new ideas for synchronous improvement of the strength and plasticity of spring steels. |
| Databáze: | OpenAIRE |
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