Khajesarvi A, Banadkouki SSG, Sajjadi SA, Somani MC. Abnormal Trend of Ferrite Hardening in a Medium-Si Ferrite-Martensite Dual Phase Steel. Metals. 2023; 13(3):542. https://doi.org/10.3390/met13030542
Abnormal tend of ferrite hardening in a medium-Si ferrite-martensite dual phase steel
|Author:||Khajesarvi, Ali1; Banadkouki, Seyyed Sadegh Ghasemi1; Sajjadi, Seyed Abdolkarim2;|
1Mining Technologies Research Center, Department of Mining and Metallurgical Engineering, Yazd University, Yazd 98195, Iran
2Department of Materials Science and Engineering, Ferdowsi University of Mashhad, Mashhad 91775, Iran
3Materials and Mechanical Engineering, Centre for Advanced Steels Research, University of Oulu, 90014 Oulun Yliopisto, Finland
|Online Access:||PDF Full Text (PDF, 4 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe20230925136845
Multidisciplinary Digital Publishing Institute,
|Publish Date:|| 2023-09-25
In this paper, the effects of carbon, Si, Cr and Mn partitioning on ferrite hardening were studied in detail using a medium Si low alloy grade of 35CHGSA steel under ferrite-martensite/ferrite-pearlite dual-phase (DP) condition. The experimental results illustrated that an abnormal trend of ferrite hardening had occurred with the progress of ferrite formation. At first, the ferrite microhardness decreased with increasing volume fraction of ferrite, thereby reaching the minimum value for a moderate ferrite formation, and then it surprisingly increased with subsequent increase in ferrite volume fraction. Beside a considerable influence of martensitic phase transformation induced residual compressive stresses within ferrite, these results were further rationalized in respect of the extent of carbon, Si, Cr and Mn partitioning between ferrite and prior austenite (martensite) microphases leading to the solid solution hardening effects of these elements on ferrite.
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
216 Materials engineering
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