EFFECT OF AGING TREATMENT PARAMETERS ON MICROSTRUCTURE AND PROPERTIES OF Cu-Ni-Si ALLOY

Authors

  • Phung Tuan Anh Military Technical Academy - Ministry of Defence, 236 Hoang Quoc Viet, Bac Tu Liem, Hanoi

DOI:

https://doi.org/10.15625/2525-2518/54/5A/12063

Keywords:

Cu-2.8Ni-1.0Si alloy, cold pre-deformation, deformation degree, aging, Vickers hardness, electrical conductivity.

Abstract

In this paper, effect of cold pre-deformation and sequent aging time and temperature on microstructure and properties of Cu-2.8Ni-1.0Si alloy are reported. The results shown that, hardness and electrical conductivity of alloy increase with increasing cold deformation degree after quenching and subsequent aging. With undeformed specimens after quenching, hardness and electrical conductivity of alloy reach maximum values with subsequent aging at 425 and 475 oC, respectively. Alloy attains maximum hardness of 255 HV5 with aging at 425 oC for 4.5 hours, while maximum electrical conductivity of 38.5 %IACS with aging at 475 oC for 8 hours. In the case of deformed specimens after quenching and subsequent aging, this rule is still preserved. Especially, at 70 % cold pre-deformation degree, alloy attains the maximum hardness of 274.3 HV5 with aging at 425 oC for 3.5 h, while maximum electrical conductivity reaches 42.4 % IACS with aging at 475 oC for 6 h.

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Published

2018-03-22

How to Cite

Anh, P. T. (2018). EFFECT OF AGING TREATMENT PARAMETERS ON MICROSTRUCTURE AND PROPERTIES OF Cu-Ni-Si ALLOY. Vietnam Journal of Science and Technology, 54(5A), 75. https://doi.org/10.15625/2525-2518/54/5A/12063

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Section

Articles