Next Article in Journal
Smart Stress Annihilation in Steels Using Residual Stress Distribution Monitoring and Localized Induction Heating
Next Article in Special Issue
Study on the Possible Error Due to Matrix Interaction in Automated SEM/EDS Analysis of Nonmetallic Inclusions in Steel by Thermodynamics, Kinetics and Electrolytic Extraction
Previous Article in Journal
Molecular Dynamics-Based Cohesive Zone Model for Mg/Mg17Al12 Interface
Previous Article in Special Issue
Effect of Heterogeneous Nucleation on Removal of Arsenic from Molten Steel by Rare Earth Addition
Open AccessArticle

Effect of Ti Content on the Behavior of Primary Carbides in H13 Ingots

1
State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Xueyuan Road NO.30, Beijing 100083, China
2
Tianjin College, University of Science and Technology Beijing, Zhujiang North Ring East Road NO.1, Baodi District, Tianjin 301830, China
*
Author to whom correspondence should be addressed.
Metals 2020, 10(6), 837; https://doi.org/10.3390/met10060837
Received: 27 May 2020 / Revised: 19 June 2020 / Accepted: 22 June 2020 / Published: 24 June 2020
(This article belongs to the Special Issue Inclusion/Precipitate Engineering in Steels)
The Ti element plays a role in pinning grain boundaries but also has a good binding ability to C and N, forming large primary carbides. Therefore, the effect of Ti content on primary carbides’ behavior in H13 ingots was comprehensively studied. A non-aqueous electrolysis method was used to determine the three-dimensional (3D) characteristics of primary carbides. We found a great difference between the two-dimensional (2D) and the three-dimensional characteristics of primary carbides. When performing 2D analyses, the density of the primary carbides appeared high, while their size was small. The actual characteristics of primary carbides can be obtained only by 3D observation. The primary carbide showed a typical dendritic structure, whose center consisted of Ti–V-rich carbide wrapped by V-rich carbide. As the Ti content increased, the size of the primary carbide increased from 24.9 μm to 41.3 μm, and the number density increases from 25.6 per/mm2 to 43.9 per/mm2. The Ti4C2S2 phase precipitated first, then changed into Ti–V-rich carbide, and finally further partly transformed into V-rich carbide. The addition of elemental Ti promoted the precipitation and transformation of primary carbides, resulting in an increase of the number density and size. View Full-Text
Keywords: Ti content; H13 steel; primary carbide; three-dimensional morphology Ti content; H13 steel; primary carbide; three-dimensional morphology
Show Figures

Figure 1

MDPI and ACS Style

Huang, Y.; Cheng, G.; Zhu, M. Effect of Ti Content on the Behavior of Primary Carbides in H13 Ingots. Metals 2020, 10, 837.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop