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Metals 2016, 6(8), 193; doi:10.3390/met6080193

Effect of Titanium on the Microstructure and Mechanical Properties of High-Carbon Martensitic Stainless Steel 8Cr13MoV

State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 1000083, China
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Academic Editor: Soran Birosca
Received: 20 May 2016 / Revised: 16 August 2016 / Accepted: 17 August 2016 / Published: 22 August 2016
(This article belongs to the Special Issue Process-Structure-Property Relationships in Metals)
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Abstract

The effect of titanium on the carbides and mechanical properties of martensitic stainless steel 8Cr13MoV was studied. The results showed that TiCs not only acted as nucleation sites for δ-Fe and eutectic carbides, leading to the refinement of the microstructure, but also inhibited the formation of eutectic carbides M7C3. The addition of titanium in steel also promoted the transformation of M7C3-type to M23C6-type carbides, and consequently more carbides could be dissolved into the matrix during hot processing as demonstrated by the determination of extracted carbides from the steel matrix. Meanwhile, titanium suppressed the precipitation of secondary carbides during annealing. The appropriate amount of titanium addition decreased the size and fraction of primary carbides in the as-cast ingot, and improved the mechanical properties of the annealed steel. View Full-Text
Keywords: carbide; mechanical property; high-carbon martensitic stainless steel; titanium carbide; mechanical property; high-carbon martensitic stainless steel; titanium
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Yu, W.-T.; Li, J.; Shi, C.-B.; Zhu, Q.-T. Effect of Titanium on the Microstructure and Mechanical Properties of High-Carbon Martensitic Stainless Steel 8Cr13MoV. Metals 2016, 6, 193.

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