Abstract
For controlling scratch defects of steel strip, nanoindentation and scratch tests were carried out. It is found out that the indentation processes are almost equivalent. The effect of external stress on indentation response has been studied by finite element modeling based on the conventional theory of mechanism-based strain gradient plasticity. There are little differences between \(C/{\sigma }_{\text{r}}\) versus \({\sigma }_{\text{add}}/{\sigma }_{\text{r}}\) curves at radial and uniaxial external stress. With the increase in intrinsic material length, the exponent m in \(P=C{h}^{m}\) decreases but the turning point decided by macro flow stress for indentation resistance changes insignificantly.
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Acknowledgments
The authors thank Dr. Cun Yu for carrying out the scratch tests. The research was supported by Shanghai Engineering Research Center of Metal Parts Green Remanufacture (No. 19DZ2252900) from Shanghai Engineering Research Center Construction Project.
Funding
The research was supported by Shanghai Engineering Research Center of Metal Parts Green Remanufacture (No. 19DZ2252900) from Shanghai Engineering Research Center Construction Project.
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Hong-bin Wang reports administrative support was provided by Shanghai Engineering Research Center Construction Project.
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Zhou, W., Wang, Hb., Wang, Q. et al. Scratch resistance analysis of steel strip through nanoindentation method. MRS Communications 11, 936–942 (2021). https://doi.org/10.1557/s43579-021-00110-3
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DOI: https://doi.org/10.1557/s43579-021-00110-3