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Correlation between the Ultimate Tensile Strength and the Brinell Hardness of Ferrous and Nonferrous Structural Materials

  • METHODS OF STUDYING THE STRUCTURE AND PROPERTIES OF MATERIALS. PROCESS MODELING
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Abstract

The relations between ultimate tensile strength σu and Brinell hardness HB are known for some groups of steels. These relations represented in the form of formulas, tables, or plots make it possible to quickly estimate σu from HB without fabricating specimens. Therefore, they are necessary during input control of blanks, treatment of steels by various methods, diagnostics of steel state after long-term service, or reductive heat treatment, and in other cases. There are very limited data on such relations for nonferrous metals and alloys; however, there are tables, which give the values of σu and HB for some alloys based on aluminum, copper, and titanium. When establishing more general and correct σu–HB relations for various structural materials (ferrous and nonferrous alloys), it is appropriate to relate σu to the maximum Brinell hardness, which enables one to obtain a general relation for ferrous and nonferrous alloys. To determine the maximum Brinell hardness, it is proposed to use depth-sensing indentation with recording the load F–indenter displacement α indentation diagram with its subsequent conversion to the unrecovered Brinell hardness HBt–relative indentation depth t/R diagram. The maximum hardness (HB)max can be easily determined from the maximum of the HBt–t/R diagram. This report presents the results of tests, in which σu and \({{(H{{B}_{t}})}^{{(\max )}}}\) have been determined for many steels, aluminum, magnesium, and titanium alloys, and a directly proportional relation between these mechanical characteristics is found.

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Funding

This work was carried out at National Research University MPEI and was supported by the Ministry of Science and Higher Education of the Russian Federation, state project no. FSWF-2020-0023.

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Authors and Affiliations

  1. National Research University MPEI, 111250, Moscow, Russia

    V. M. Matyunin, A. Yu. Marchenkov, M. A. Karimbekov, M. V. Goryachkina, P. V. Volkov & D. A. Zhgut

  2. AO Russian Space Systems, 111250, Moscow, Russia

    R. Yu. Agafonov & V. V. Danilin

Authors
  1. V. M. Matyunin
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  2. A. Yu. Marchenkov
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  3. R. Yu. Agafonov
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  4. V. V. Danilin
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  5. M. A. Karimbekov
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  6. M. V. Goryachkina
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  7. P. V. Volkov
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  8. D. A. Zhgut
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Corresponding author

Correspondence to V. M. Matyunin.

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Translated by Yu. Ryzhkov

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Matyunin, V.M., Marchenkov, A.Y., Agafonov, R.Y. et al. Correlation between the Ultimate Tensile Strength and the Brinell Hardness of Ferrous and Nonferrous Structural Materials. Russ. Metall. 2021, 1719–1724 (2021). https://doi.org/10.1134/S0036029521130164

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  • DOI: https://doi.org/10.1134/S0036029521130164

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