Effect of nano-sized TiC particle addition on microstructure and mechanical properties of SA-106B carbon steel

Hong, Sung-Mo; Park, Eun-Kwang; Park, Jin Ju; Lee, Min Ku; Lee, Jung Gu

doi:10.1016/j.msea.2015.07.026

Cited by 46 publications

(11 citation statements)

References 33 publications

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“…Solving the problem of simultaneously improving the strength and toughness of cast steels is a long-term goal for researchers. In recent years, ceramic particles, such as TiC [1,2], TiB 2 [3,4], (NbTi)C [5] and other ceramics [6,7], have been used to enhance metallic materials because of their good thermal stability, high modulus, and good wettability with the metal matrix [6,[8][9][10][11]. The outstanding role of ceramic particles in enhancing metal properties has aroused researchers' interest [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Simultaneously Enhanced Strength, Toughness and Ductility of Cast 40Cr Steels Strengthened by Trace Biphase TiCx-TiB2 Nanoparticles

Qiu

Chang

et al. 2018

Metals

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Simultaneously improving the strength, toughness, and ductility of cast steels has always been a difficult problem for researchers. Biphase TiCx-TiB2 nanoparticle-reinforced cast steels are prepared by adding in situ nanosized biphase TiCx-TiB2/Al master alloy during the casting process. The experimental results show that a series of significant changes take place in the microstructure of the steel: the ferrite-pearlite structure of the as-cast steels and the bainite structure of the steels after heat treatment are refined, the grain size is reduced, and the content of nanoparticles is increased. Promotion of nucleation and inhibition of dendrite growth by biphase TiCx-TiB2 nanoparticles leads to a refinement of the microstructure. The fine microstructure with evenly dispersed nanoparticles offers better properties [yield strength (1246 MPa), tensile strength (1469 MPa), fracture strain (9.4%), impact toughness (20.3 J/cm2) and hardness (41 HRC)] for the steel with 0.018 wt.% biphase TiCx-TiB2 nanoparticles, which are increased by 15.4%, 31.2%, 4.4%, 11.5%, and 7.9% compared with the 40Cr steels. The higher content of nanoparticles provides higher strengths and hardness of the steel but are detrimental to ductility. The improved properties may be attributed to fine grain strengthening and the pinning effect of nanosized carbide on dislocations and grain boundaries. Through this work, it is known that the method of adding trace (0.018 wt.%) biphase TiCx-TiB2 nanoparticles during casting process can simultaneously improve the strength, toughness, as well as ductility of the cast steel.

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Section: Introductionmentioning

confidence: 99%

Simultaneously Enhanced Strength, Toughness and Ductility of Cast 40Cr Steels Strengthened by Trace Biphase TiCx-TiB2 Nanoparticles

Qiu

Chang

et al. 2018

Metals

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“…And excessive nano-sized precipitation is disadvantageous to the ductility and toughness of steel. 31,32) The nano-sized TiC precipitation in 880Q, 550PT+880Q and 650PT + 880Q was observed using TEM, and its size distribution frequency was also counted. Figures 6(a)-6(c) show the TEM figures of TiC-reinforced steel plates under different treatments, previous works have shown that the spherical carbides in TEM figures had the FCC structure, which were nano-sized TiC precipitates.…”

Section: Microstructuresmentioning

confidence: 99%

Microstructure, Mechanical Properties and Wear Resistance of Low Alloy Abrasion Resistant Martensitic Steel Reinforced with TiC Particles

et al. 2020

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“…Lazarova et al reported enhanced mechanical properties of P265GH steel through the dispersion of TiCN particles, and a strengthened aluminum alloy material was also obtained by this method [12,14]. Park et al conducted a series of studies on SA-106B carbon steel reinforced with TiC nanoparticles [15][16][17][18][19]. The results showed that TiC can be evenly dispersed in steel and can obtain improved steel including an increase in the cavitation erosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Study on the Dissolution and Precipitation Behavior of Self-Designed (NbTi)C Nanoparticles Addition in 1045 Steel

Zhu

Xiao

et al. 2021

Metals

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Self-designed (NbTi)C nanoparticles were obtained by mechanical alloying, predispersed in Fe powder, and then added to 1045 steel to obtain modified cast steels. The microstructure of cast steels was investigated by an optical microscope, scanning electron microscope, X-ray diffraction, and a transmission electron microscope. The results showed that (NbTi)C particles can be added to steels and occur in the following forms: original ellipsoidal morphology nanoparticles with uniform dispersion in the matrix, cuboidal nanoparticles in the grain, and microparticles in the grain boundary. Calculations by Thermo-Calc software and solubility formula show that cuboidal (NbTi)C nanoparticles were precipitated in the grain, while the (NbTi)C microparticles were formed by eutectic transformation. The results of the tensile strength of steels show that the strength of modified steels increased and then declined with the increase in the addition amount. When the addition amount was 0.16 wt.%, the modified steel obtained the maximum tensile strength of 759.0 MPa, which is an increase of 52% compared with to that with no addition. The hardness of the modified steel increased with the addition of (NbTi)C nanoparticles. The performance increase was mainly related to grain refinement and the particle strengthening of (NbTi)C nanoparticles, and the performance degradation was related to the increase in eutectic (NbTi)C.

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Effect of nano-sized TiC particle addition on microstructure and mechanical properties of SA-106B carbon steel

Cited by 46 publications

References 33 publications

Simultaneously Enhanced Strength, Toughness and Ductility of Cast 40Cr Steels Strengthened by Trace Biphase TiCx-TiB2 Nanoparticles

Simultaneously Enhanced Strength, Toughness and Ductility of Cast 40Cr Steels Strengthened by Trace Biphase TiCx-TiB2 Nanoparticles

Microstructure, Mechanical Properties and Wear Resistance of Low Alloy Abrasion Resistant Martensitic Steel Reinforced with TiC Particles

Study on the Dissolution and Precipitation Behavior of Self-Designed (NbTi)C Nanoparticles Addition in 1045 Steel

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