A New Co-Base Superalloy Strengthened by γ′ Phase
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چکیده
منابع مشابه
A new dental superalloy system. 3. Microstructure and phase transformations.
A microstructural study was conducted on 15 cobalt-chromium-nickel alloys of the basic composition 40 Co-30 Ni-30 Cr. The alloys were strengthened by the addition of tantalum and tantalum-rich regions were found at the interdendritic spaces. The increase in Ta concentration caused a decrease in the concentration of the a phase and an increase in the amounts of the a phase. Excessive amounts of ...
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The aphase is rich in Ta. When the Ta concentration is less than 14%N, adoes not interfere with the slip mechanism; when the Ta concentration is more than 15%, ainterferes with the slip mechanism. The coherent at-Co 3Ta phase forms at Ta concentrations of less than 15%1, whereas incoherent 7-Co2Ta forms only at higher Ta concentrations. The interface between aand the matrix is an important fact...
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Effect of thermal treatment on the fatigue crack propagation behavior of a new Ni-base superalloy Xingbo Liu a,*, ling Xu a, Ever Barbero a, Wei-Di Cao b, Richard L. Kennedy b a West Virginia University, Morgantown, WV 26506-6106, USA b Allvac, an AT! Technologies Company, Monroe, NC 28111-5030, USA Received 22 October 2006; received in revised form 23 March 2007; accepted 10 May 2007 The effec...
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ژورنال
عنوان ژورنال: MATERIALS TRANSACTIONS
سال: 2006
ISSN: 1345-9678,1347-5320
DOI: 10.2320/matertrans.47.2099