Influence of Heat Treatment on Microstructure and Properties of Ultrahigh Strength Fe-Ni-Co Alloy

Abstract:

The effect of temper temperature and duration on the microstructure and mechanical properties of new-type ultrahigh strength Fe-Ni-Co alloy was investigated with by mechanics performance testing and TEM. The results showed that the maximum ultimate tensile strength could reach 2230MPa after temper near 470°C due to the precipitation of coherent zones of fine carbides. With tempering time extended, the strength was cut down by the M2C carbides coarsening and the decreased coherency with matrix.

• Periodical: Advanced Materials Research (Volumes 690-693)
• Pages: 270-275
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.690-693.270
• Online since: May 2013
• Authors: J.Y. Zhong, P. Zhong
• Keywords: 2200MPa Ultrahigh Strength Alloy, Mechanical Property, Microstructure, Tempering Process

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