Microstructure and Mechanical Properties of Cast ZG0Cr16Ni4Cu3Nb Heat Resistant Steel
The effects of sand box and single shell on microstructure and mechanical properties of cast ZG0Cr16Ni4Cu3Nb heat resistant steel have been studied.The results show that the microstructure of the mechanical test rod is mainly composed of lath martensite,δ-ferrite,M23C6 carbides and NbC carbides.The difference lies in the existence of nano-sized copper-rich precipitates on the matrix of the test bar of the sand box.The mechanical results show that the mechanical properties of the sand box is better than that of the single shell.
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