Transcription of Developing Damage Tolerance and Creep …
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Superalloys 2004. Edited by Green, Pollock, H. Harada, Howson, Reed, Schirra, and S, Walston TMS (The Minerals, Metals & Materials Society), 2004. Developing Damage Tolerance AND Creep RESISTANCE IN A HIGH STRENGTH. NICKEL ALLOY FOR DISC APPLICATIONS. Hardy1, B. Zirbel2, G. Shen2, and R. Shankar2. 1. Rolls-Royce plc, PO Box 31, Derby, DE24 8BJ, United Kingdom 2. Ladish Co., Inc., Cudahy, Wisconsin, 53110, USA. Keywords: powder metallurgy, RR1000, disc forgings Abstract existence of stable phases at fabrication and operating temperatures (Figure 1)3. The use of thermodynamic modelling The development of an affordable nickel disc alloy that shows the also enables the alloy designer to predict the outcome of a set of required combination of strength, Damage Tolerance and Creep conditions that deviate from equilibrium, as well as fundamental resistance continues to challenge materials engineers.
Hafnium also forms a primary carbide that remains stable at low temperatures, which is considered to prevent excessive M 23C 6 and M 6C formation at grain boundaries.However, these benefits need
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