Strain-induced precipitation in a Ti micro-alloyed HSLA steel

Wang, Zhenqiang; Mao, Xinping; Yang, Zhigang; Sun, Xinjun; Yong, Qilong; Li, Zhaodong; Weng, Yuqing

doi:10.1016/j.msea.2011.09.062

Cited by 85 publications

(36 citation statements)

References 17 publications

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“…While the softening kinetics curve of the reference steel exhibit ''S'' shape at all temperatures, those of the three Ti-containing steels were characterized by completely different dependence on temperature. At 1000 1C, the softening kinetics curves of both 0.5Mn and 1.5Mn steel exhibit ''S'' shape similar with those of reference steel, indicating that no precipitation occurred during the softening of deformed austenite [6,11]. However, at the temperatures below 950 1C for 0.5Mn and 1.5Mn steel, and 900 1C for 5.0Mn steel, the softening ratio versus…”

Section: Softening Kinetics and Precipitation-time-temperature Diagrammentioning

confidence: 78%

“…time curve show a plateau, which was attributed to the pinning force from the tiny strain induced precipitates [6,12]. According to Zurob et al [13], strain induced precipitation and recrystallization and/or recovery are in a competitive relationship.…”

Section: Table1mentioning

confidence: 96%

“…It is well established that in Ti-microalloyed low carbon steel there exist various kinds of precipitates such as TiN, Ti 4 S 2 C 2 , TiS and TiC [1][2][3][4][5][6], and so on that significantly influences the mechanical properties. Among these precipitates, strain induced TiC precipitation plays an important role in influencing microstructural evolution during the hot rolling of Ti-microalloyed plate steel [5,7].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Mn concentration on the kinetics of strain induced precipitation in Ti microalloyed steels

Wang

Sun

Zhou

et al. 2013

Materials Science and Engineering: A

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Section: Softening Kinetics and Precipitation-time-temperature Diagrammentioning

confidence: 78%

Section: Table1mentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Mn concentration on the kinetics of strain induced precipitation in Ti microalloyed steels

Wang

Sun

Zhou

et al. 2013

Materials Science and Engineering: A

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“…The precipitate was extracted using carbon replica technique [14], and the size, distribution and composition of them were analyzed by transmission electron microscopy (TEM) and energy dispersive X-ray spectrometer (EDS).…”

Section: Materials and Experimental Detailsmentioning

confidence: 99%

Carbide precipitation in austenite of Nb–Mo-bearing low-carbon steel during stress relaxation

et al. 2015

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“…[15][16][17][18][19][20][21] However, the interplay is not clear between the nucleation and early growth of TiC-precipitates and the softening of the martensite due to the redistribution of carbon and titanium atoms into cementite and TiC and the dislocation annihilation during tempering.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ti on Evolution of Microstructure and Hardness of Martensitic Fe–C–Mn Steel during Tempering

et al. 2014

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The effect of the addition of 0.042 wt.% of titanium on the relation between the evolution of the microstructure and the softening kinetics of quenched martensite in high-purity Fe-C-Mn steel has been studied during tempering at 300 and 550°C. The evolution of the microstructure is characterized by measuring the cementite particle size, the martensite block size, the area fraction of martensite regions which contain a high dislocation density, the macroscopic hardness, the nano-hardness of martensite blocks boundaries, the nano-hardness of the matrix and the TiC-precipitate size during tempering. Nucleation of TiC-precipitates take place during annealing at 550°C and starts earlier in regions close to the block boundaries, after 5-10 minutes, and thereafter in the matrix, after 10-30 minutes, due to the higher dislocation density in the regions close to the block boundaries. The TiC-precipitates slow down the recovery in regions of high dislocation density compared to the alloy without TiC-precipitates. The TiC-precipitates increase the macroscopic hardness of the steel after 30 minutes annealing at 550°C. The growth of TiC-precipitates in martensite is simulated in good agreement with experimental observations by a model that takes into account: 1) capillarity effects, 2) the overlap of the titanium diffusion fields between TiC-precipitates, and 3) the effect of pipe diffusion of titanium atoms via multiple dislocations. The average, experimentallyobserved, TiC-precipitate size is 69 ± 48 Ti atoms.

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Strain-induced precipitation in a Ti micro-alloyed HSLA steel

Cited by 85 publications

References 17 publications

Effect of Mn concentration on the kinetics of strain induced precipitation in Ti microalloyed steels

Effect of Mn concentration on the kinetics of strain induced precipitation in Ti microalloyed steels

Carbide precipitation in austenite of Nb–Mo-bearing low-carbon steel during stress relaxation

Effect of Ti on Evolution of Microstructure and Hardness of Martensitic Fe–C–Mn Steel during Tempering

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