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Microscopic phase-field simulation for coarsening behavior of L12 and DO22 phases of Ni75CrxAl25−x alloy

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Abstract

Based on the microscopic phase-field dynamic model and the microelasticity theory, the coarsening behavior of L12 and DO22 phases in Ni75CrxAl25−x alloy was simulated. The results show that the initial irregular shaped, randomly distributed L12 and DO22 phases are gradually transformed into cuboidal shape with round corner, regularly aligned along directions [100] and [001], and highly preferential selected microstructure is formed during the later stage of precipitation. The elastic field produced by the lattice mismatch between the coherent precipitates and the matrix has a strong influence on the coarsening kinetics, and there is no linear relationship between the cube of the average size of precipitates and the aging time, which does not agree with the results predicted by the classical Lifshitz-Slyozov-Wagner. The coarsening processes of L12 and DO22 phases are retarded in elastically constrained system. In the concurrent system of L12 and DO22 phases, there are two types of coarsening modes: the migration of antiphase domain boundaries and the interphase Ostwald ripening.

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References

  1. MIYAZAKI T, KOYAMA T, KOZAKAI T. Computer simulations of the phase transformation in real alloy systems based on the phase field method [J]. Mater Sci Eng A, 2001, A312(1): 38–49.

    Article  Google Scholar 

  2. LU Yan-li, CHEN Zheng, LI Yong-sheng, WANG Yong-xin. Microscopic phase-field simulation coupled with elastic strain energy for the precipitation process of Ni-Cr-Al alloys with lower Al content [J]. Trans Nonferrous Met Soc China, 2007, 17(1): 64–71.

    Article  Google Scholar 

  3. POUDRI R, CHEN L Q. Computer simulation of atomic ordering and compositional clustering in the pseudobinary Ni3Al-Ni3V system [J]. Acta Mater, 1998, 46(5): 1719–1729.

    Article  Google Scholar 

  4. LI Yong-sheng, CHEN Zheng, LU Yan-li, WANG Yong-xin. Simulation of the incubation time of nucleation using the microsopic phase-field method [J]. J Cent South Univ Technol, 2005, 12(6): 1719–1729.

    Google Scholar 

  5. ORLIKOWSKI D, SAGUI C. Large-scale simulations of phase separation of elastically coherent binary alloy systems [J]. Physical Review B, 1999, 59(13): 8646–8659.

    Article  Google Scholar 

  6. WEN Y H, WANG Y, CHEN L Q. Coarsening dynamics of self-accommodating coherent patterns [J]. Acta Mater, 2002, 50(1): 13–21.

    Article  Google Scholar 

  7. BANERIJEE D, BANERJEE R, WANG Y. Formation of split patterns of γ′ precipitates in Ni-Al via particle aggregation [J]. Scripta Mater, 1999, 41(9): 1023–1030.

    Article  Google Scholar 

  8. CHEN L Q. Computer simulation of spinodal decomposition in ternary systems [J]. Acta Metall Mater, 1994, 42(10): 3503–3513.

    Article  Google Scholar 

  9. WANG Y U, JIN M Y, KHACHATURYAN A G. The effects of free surfaces on martensite microstructures: 3D phase field microelasticity simulation study [J]. Acta Mater, 2004, 52(4): 1039–1050.

    Article  Google Scholar 

  10. PRIKHODKO S V, CARNES J D, ISAAK D G, ARDELL A J. Elastic constants of a Ni-12.69at% Al alloy from 295 to 1 300 K [J]. Scr Mater, 1998, 38(1): 67–72.

    Article  Google Scholar 

  11. JIA C C, ISHIDA K, NISHIZAWA T. Partition of alloying elements between γ(A1), γ′(L12), and β(B2) phase in Ni-Al base systems [J]. Metall Trans, 1994, A25(1): 473–478.

    Article  Google Scholar 

  12. DUPIN N, ANSARA I, SUNDMAN B. Thermodynamic re-assessment of the ternary system Al-Cr-Ni [J]. Calphad, 2001, 25(2): 279–298.

    Article  Google Scholar 

  13. VAITHYANATHAN V, CHEN L Q. Coarsening of ordered intermetallic precipitates with coherency stress [J]. Acta Mater, 2002, 50(16): 4061–4073.

    Article  Google Scholar 

  14. MURALIDHARAN G, CHEN H. Coarsening kinetics of coherent γ′ precipitates in ternary Ni-based alloys: Ni-Al-Si system [J]. Science and Technology of Advanced Materials, 2000, 1(1): 51–62.

    Article  Google Scholar 

  15. WANG Y, BANERGEE D, SU C C, KHACHATURYAN A G. Field kinetic model and computer simulation of precipitation of L12 ordered intermetallics from FCC solid solution [J]. Acta Mater, 1998, 46(9): 2983–3001.

    Article  Google Scholar 

  16. LOCHTE L, GITT A. Simulation of the evolution of GP zones in Al-Cu alloys: An extended Cahn-hilliard approach [J]. Acta Mater, 2000, 48(11): 2969–2984.

    Article  Google Scholar 

  17. QIU Y Y. Coarsening kinetics of γ′ precipitates in Ni-Al and Ni-Al-Mo alloys [J]. Journal of Materials Science, 1996, 31(16): 4311–4319.

    Article  Google Scholar 

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Authors and Affiliations

  1. School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an, 710072, China

    Yan-li Lu  (卢艳丽), Zheng Chen  (陈 铮) & Jing Zhang  (张 静)

  2. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, 710072, China

    Zheng Chen  (陈 铮)

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  1. Yan-li Lu  (卢艳丽)
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  2. Zheng Chen  (陈 铮)
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  3. Jing Zhang  (张 静)
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Correspondence to Yan-li Lu  (卢艳丽).

Additional information

Foundation item: Project(50671084) supported by the National Natural Science Foundation of China; Project(20070420218) supported by China Postdoctoral Science Foundation

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Lu, Yl., Chen, Z. & Zhang, J. Microscopic phase-field simulation for coarsening behavior of L12 and DO22 phases of Ni75CrxAl25−x alloy. J. Cent. South Univ. Technol. 15, 443–448 (2008). https://doi.org/10.1007/s11771-008-0083-y

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  • DOI: https://doi.org/10.1007/s11771-008-0083-y

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