Phase Field Simulation for Grains Evolution of 17-4PH Steel During Cyclic Heat Treatment

doi:10.1007/s40195-012-0505-6

Acta Metallurgica Sinica (English Letters) ›› 2013, Vol. 26 ›› Issue (2): 183-187.DOI: 10.1007/s40195-012-0505-6

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Phase Field Simulation for Grains Evolution of 17-4PH Steel During Cyclic Heat Treatment

Yuan YOU, Mufu YAN, Chengsong ZHANG

National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering,Harbin Institute of Technology, Harbin 150001, China

Received:2012-03-24 Revised:2012-07-28 Online:2013-04-25 Published:2013-03-14
Contact: Mnfu YAN
Supported by:
National Natural Science Foundation of China (No.51071061) and NSAF(No.11176011)

Abstract

Abstract:

A phase field model is developed to simulate the grain evolution of 17-4PH steel during cyclic heat treatment (CHT). Our simulations successfully reproduce the grain morphologies of every CHT. In the process of every CHT, phase transformation recrystallization happens. The recrystallized grains appear mainly on the original grain boundaries. The average grain size of 13.2 μm obtained by 1040 ℃×1 h solution treatment for this experimental steel can be refined to 2.2μm after five CHT's. Furthermore, the effects of phenomenological parameters in our model are discussed.

Key words: Phase field model, Grain refinement, Recrystallization, 17-4PH Steel

Yuan YOU, Mufu YAN,Chengsong ZHANG. Phase Field Simulation for Grains Evolution of 17-4PH Steel During Cyclic Heat Treatment[J]. Acta Metallurgica Sinica (English Letters), 2013, 26(2): 183-187.

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Phase Field Simulation for Grains Evolution of 17-4PH Steel During Cyclic Heat Treatment

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