Preprint Article Version 1 This version is not peer-reviewed

Influence of Heating and Cooling Rate on Dissolution and Precipitation Behavior of Nickel-based Single Crystal Superalloy

Version 1 : Received: 3 March 2019 / Approved: 4 March 2019 / Online: 4 March 2019 (09:45:06 CET)

A peer-reviewed article of this Preprint also exists.

Wang, X.-Y.; Wen, Z.-X.; Cheng, H.; Gu, S.-N.; Lu, G.-X. Influences of the Heating and Cooling Rates on the Dissolution and Precipitation Behavior of a Nickel-Based Single-Crystal Superalloy. Metals 2019, 9, 360. Wang, X.-Y.; Wen, Z.-X.; Cheng, H.; Gu, S.-N.; Lu, G.-X. Influences of the Heating and Cooling Rates on the Dissolution and Precipitation Behavior of a Nickel-Based Single-Crystal Superalloy. Metals 2019, 9, 360.

Journal reference: Metals 2019, 9, 360
DOI: 10.3390/met9030360

Abstract

The effects of heating rate before solution treatment and cooling rate after solution treatment on the morphological distribution and evolution of precipitation phase of nickel-based single crystal superalloy were studied. The dissolution, precipitation and growth of precipitation phase and matrix phase during heat treatment were analyzed by means of high power scanning electron microscopy. The results show that the morphology of precipitated phase has nothing to do with the distribution of precipitated phase and the heating rate in the heating process, but the cooling rate in the cooling process affects the shape, size and distribution of precipitated phase. The faster the cooling rate, the smaller the precipitated phase is, the more irregular the shape is, the smaller the equivalent edge length is, and the smaller the channel width of matrix phase is.

Subject Areas

Nickel-based single crystal alloy; Heat treatment; Heating and cooling rate; Precipitation and dissolution of γ´ phase

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