Study on the Precipitation Sequence of Aged NCu30-4-2-1 Alloy by DSC

Yun Long Ai; Xiao Rui Shen; Wei Hua Chen; Yao Hui Xie

doi:10.4028/www.scientific.net/AMR.1061-1062.35

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1061-1062Study on the Precipitation Sequence of Aged...

Study on the Precipitation Sequence of Aged NCu30-4-2-1 Alloy by DSC

Abstract:

NCu30-4-2-1 alloy was handled by solid solution at 950°Cfor 2h and then taking aging treatment at different temperatures and holding time. The microstructural evolution of NCu30-4-2-1 alloy in the process of aging treatment was investigated by metallographic microscope, X-ray diffractometer and differential scanning calorimetry. The results show that the phases of as-cast NCu30-4-2-1 alloy is composed by dendritic α-Ni-based solid solution and β-Ni₃Si. After solid solution and aging treatment, the block distribution β-Ni₃Si dissolves and many small granular dispersed distribution β'-Ni₃Si precipitate out. With the increase of aging temperature and holding time, metastable β' tends to transform into stable β-Ni₃Si. The precipitation sequence of aged NCu30-4-2-1alloy is supersaturated solid solution of α-Ni, GP zone, β'-Ni₃Si and β-Ni₃Si.

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Periodical:

Advanced Materials Research (Volumes 1061-1062)

Pages:

35-38

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1061-1062.35

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Online since:

December 2014

Authors:

Yun Long Ai*, Xiao Rui Shen, Wei Hua Chen, Yao Hui Xie

Keywords:

Aging Treatment, DSC, Microstructural, NCu30-4-2-1 Alloy, Precipitation Sequence

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* - Corresponding Author

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