Evaluation of inconel 718 creep behavior
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Artigo de evento
Date
2012
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Defect and Diffusion Forum
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3
Authors
Martinolli K.
Sugahara T.
Reis D.
De Moura Neto C.
Hirschmann A.C.
Couto A.A.
Sugahara T.
Reis D.
De Moura Neto C.
Hirschmann A.C.
Couto A.A.
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Abstract
Superalloys are used primarily in aerospace applications. These applications require a material with high mechanical strength, good resistance to fatigue and creep, good corrosion resistance and ability to operate continuously at elevated temperatures. These alloys were developed for elevated temperature service, where relatively severe mechanical stressing is encountered, and where high surface stability is frequently required. Inconel 718 has being investigated because it is one of the most widely used superalloys. Constant load creep tests were conducted on a standard creep machine at 600 and 700°C and stress levels of 300 MPa. Sets of curves and experimental parameters for the primary, secondary and tertiary regions, as a function of stress and temperature applied were obtained. The ductility, the creep rate and lifetime was evaluated. © (2012) Trans Tech Publications.
Description
Keywords
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Constant load creep tests , Elevated temperature , Experimental parameters , High mechanical strength , High temperature , Inconel-718 , Mechanical stressing , Surface stability