- Chu Zhong
Chu Zhong
Qingdao Technological University, Qingdao 266033, China
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Wang Jin
Qingdao Technological University, Qingdao 266033, China
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Chen Zheng
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China
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The substitution behavior of Cr atom in Ni75CrxAl25-x alloy at 873 K was simulated by a microscopic phase-field model. During the precipitation progress, Cr atoms substitute for the Al sublattices partially to form Ni3Al1-xCrx phases (L12 structure). The limits of occupation probabilities of Cr atoms in L12 phases are lower. Cr atom concentration approaches the saturation value in L12 phases when Cr content exceeds 3%. At the ordering domain interface of L12 phases, Cr atoms substitute for the Al sublattices completely, and the stable D022 phases are formed. The final precipitates are mix phases of Ni3Al-Ni3Cr.
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[Chu Zhong, Wang Jin, Chen Zheng. Microscopic Phase-Field Simulation for Substitution Behavior of Cr Atom in Ni75CrxAl25-x Alloy[J]. Rare Metal Materials and Engineering,2011,40(2):259~264.]
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- Received:March 05,2010