Transactions of Materials and Heat Treatment

Title：Microstructure variation and mechanics properties of GH4169 superalloy between temperatures of 700℃ and 800℃

Authors： WU Ze YAO Ze-kun GUO Hong-zhen HOU Hong-yu WANG Min-ping(School of Materials Science and Engneering Northwestern Polytechnical University Xi′an 710072 China)

Unit：

KeyWords： GH4169 superalloy performance of mechanics microstructure

ClassificationCode：TG113

year,vol(issue):pagenumber：2007,32(2):90-93

Abstract：

The microstructure variation,instantaneous tensile and persistent properties of GH4169 superalloy at room temperature, between temperatures of 700℃ and 800℃ were studied.By the experiments,it was found that the instantaneous tensile resistance was decreased with temperature increase,but the smallest value of plasticity was appeared at 750℃ and the plasticity was increased strongly above 750℃.The persistent time of GH4169 alloy was as long as 406h 55min at 750℃ with stress of 295 MPa,which was due to that the particle and stick sharp Widmannstatten structure was separated out from the group body and it could extend the time of initiating cavities.

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Reference：

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