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Estimation of the Strength Coefficient and Strain Hardening Exponent from Monotonic Tensile Properties of Steels

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Abstract

In order to derive a method for estimating the strength coefficient and strain hardening exponent of steel, the performance parameters of 86 kinds of steel taken from American Iron and Steel Institute (AISI) Bar Steel Fatigue Database were examined and equations that related the strength coefficient and strain hardening exponent to the ultimate tensile strength and yield strength were developed. Correlations from the literature among the strength coefficient, strain hardening exponent and other monotonic tensile properties were also examined and compared to the relationships proposed in this study using the data of 86 kinds of steel. The proposed method was shown to be better used to estimate the strength coefficient and strain hardening exponent.

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Acknowledgement

The authors would like to thank Prof. Z.P. Zhang and Dr. C.W. Li for providing the program code of Zhang’s method. The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (No. 51601221), the Fundamental Research Funds for the Central Universities (No. JB180402), and the Natural Science Basic Research Plan in Shaanxi Province of China (No. 2019JQ-353).

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Authors and Affiliations

  1. School of Mechatronic Engineering, Xidian University, South Taibai Road, Xi’an, 710071, China

    Jing Li & Yuan-ying Qiu

  2. Shanghai Spaceflight Precision Machinery Research Institute, No. 76 Guide Road, Shanghai, 201600, China

    Hai-dong Wang & Zhao-xi Wang

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  1. Jing Li
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  2. Yuan-ying Qiu
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  4. Zhao-xi Wang
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Correspondence to Jing Li.

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Li, J., Qiu, Yy., Wang, Hd. et al. Estimation of the Strength Coefficient and Strain Hardening Exponent from Monotonic Tensile Properties of Steels. Int J Steel Struct 19, 1951–1968 (2019). https://doi.org/10.1007/s13296-019-00256-w

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  • DOI: https://doi.org/10.1007/s13296-019-00256-w

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