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| DEVELOPMENT OF A NEW HIGH STRENGTH AND GOOD HOT CORROSION RESISTANCE FOR LOW SEGREGATION SUPERALLOY DZ68 |
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Cite this article:
. DEVELOPMENT OF A NEW HIGH STRENGTH AND GOOD HOT CORROSION RESISTANCE FOR LOW SEGREGATION SUPERALLOY DZ68. Acta Metall Sin, 2007, 43(4): 422-426 .
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Abstract A more homogeneous microstructure and more alloying of alloys can be obtained by controlling segregation during solidification, so properties of alloys can be improved. For directional solidification (DZ) of turbine blades，a new nickel-base superalloy DZ68, which makes use of low-segregation, is developed. This superalloy can meet the need of engine operation under offshore condition. Besides the hot corrosion resistance, DZ68 possesses an outstanding property of the high-strength aero engine blade material. This paper mainly studies properties of mechanic and hot corrosion resistance. It is shown that DZ68 possesses an excellent performance of hot corrosion resistance similar to DZ38G（In738）and shows mechanical properties equivalent to DZ125.
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Received: 21 July 2006
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