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Structure and mechanical properties of LMtsSK-type brass after strengthening heat treatment

  • Nonferrous Metals and Alloys
  • Published:
Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    During tempering of a brass containing silicide inclusions in the structure of α-and β-phases, two stages of strengthening, accompanied by a decrease in plasticity, are established. The first (low temperature) one is related to decomposition of the supersaturated solution of α-phase, while the second (medium-temperature) one is related to decomposition of the supersaturated β-phase solid solution.

  2. 2.

    Within certain quenching temperature ranges of the brass, precipitation of alloying elements (Mn and Si) and impurities (Fe and Ni) from the solid solution takes place, with formation of compounds.

  3. 3.

    To improve the combination of mechanical properties it is recommended that the brass parts be heat-treated (quenching + tempering).

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Literature cited

  1. T. E. Fernside, “Special Pb−Si−Mn brass,” USA Patent No. 3.337.335 Metallurgiya (Abstract Magazine), No. 10 (1968).

  2. Masateru Shiwa and Katsuo Matsumoto, “Wear resistance of copper alloys containing dispersed Mn silicide,” Hitachi Heren [in Japanese],55, No. 6, 607–611 (1973).

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  3. K. V. Varli, N. V. Edneral, A. I. Leikin, et al., “Structure and properties of brass LMtsSKA 58-2-2-1-1 after strengthening heat treatment,” Metalloved. Term. Obrab. Met., No. 6, 34–37 (1978).

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  4. N. Ya. Titarev, “Application of multicomponent brass with high strength characteristics in place of tin bronzes,” in: Major Trends to Improve the Effectiveness of Application of Light and Heavy Nonferrous Metals (Thesis of Presentation) [in Russian], TsNIItsvetmet Economiki i Informatsii (1980), pp. 41–42.

  5. N. Ya. Titarev, L. I. Mitina, and É. I. Mironenko, “Effect of Mn and Si on properties and structure of wear-resistant brass,” in: Izv. Vuzov. Tsvetnaya Metallurgiya, No. 2, 105–110 (1982).

  6. B. A. Fridman, Mechanical Properties of Metals. Part II: Mechanical Tests. Structural Strength [in Russian], Mashinostroenie, Moscow (1974), p. 21.

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Authors
  1. N. Ya. Titarev
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  2. V. Ya. Moroz
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  3. A. G. Melakh
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Additional information

All-Union Scientific-Research and Design Institute for Recycled Nonferrous Metals. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 11, pp. 41–44, November, 1986.

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Titarev, N.Y., Moroz, V.Y. & Melakh, A.G. Structure and mechanical properties of LMtsSK-type brass after strengthening heat treatment. Met Sci Heat Treat 28, 828–832 (1986). https://doi.org/10.1007/BF00707097

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  • DOI: https://doi.org/10.1007/BF00707097

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