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Temperature-time ranges of aging of alloy AK6

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

Conclusions

  1. 1.

    Zone aging occurs when alloy AK6 is heated for several thousand hours at 20–70°C. Zone aging, mixed aging, phase aging, and coalescence occur at 125–195°C. With increasing aging temperature from 125 to 195° the length of each stage and the total aging time decrease.

  2. 2.

    With the transition from zone to phase aging the ultimate strength rises from 44 to 49 kg/mm2, the yield strength from 29 to 43 kg/mm2, σ0.2/σb from 0.60 to 0.85, and there is a decrease of the stress corrosion resistance and elongation. In the coalescence stage the corrosion resistance increases and the strength characteristics decrease.

We propose new aging conditions for alloy AK6: artificial zone aging at 90°C for 3–5 h and artificial phase aging at 175°C for ∼6 h.

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Literature cited

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Authors
  1. L. N. Leshchiner
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Additional information

Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 5, pp. 15–18, May, 1971.

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Leshchiner, L.N. Temperature-time ranges of aging of alloy AK6. Met Sci Heat Treat 13, 362–365 (1971). https://doi.org/10.1007/BF00652435

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  • DOI: https://doi.org/10.1007/BF00652435

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