Journal ArticleDOI
TiC precipitation induced effect on microstructure and mechanical properties in low carbon medium manganese steel
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In this paper, the precipitation behavior of titanium treated by different processes and its effect on microstructure and mechanical properties has been investigated in low carbon medium manganese steel, and it is concluded that dislocation strengthening mechanism induced by TiC precipitation is the dominant factor for the changes of both strength and toughness.Abstract:
The precipitation behavior of titanium treated by different processes and its effect on microstructure and mechanical properties has been investigated in low carbon medium manganese steel. It is found that the formed precipitates during both tempering and reheating-quenching processes are TiCs. The size of them mainly ranges from 1 to 18 nm and 1 to 36 nm, respectively. And tempering treatment especially promotes a peak of TiC in diameter from 1 to 5 nm, but it also boosts parts of precipitates nucleating along the grain boundaries. The precipitation of TiC is useful for the refinement of austenite grains and this effect depends on the reheating temperature. The mean grain size can be refined to 7.8 μm when the reheating temperature is 900 °C. Furthermore, it is found that the mechanical properties are determined by the reheating-quenching process. However, the tempering has nearly no influence on it when the sample is treated by the same reheating temperature. It is concluded that dislocation strengthening mechanism induced by TiC precipitation is the dominant factor for the changes of both strength and toughness.read more
Citations
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The effects of the initial martensite microstructure on the microstructure and tensile properties of intercritically annealed Fe–9Mn–0.05C steel
TL;DR: In this article, the effects of the initial microstructure of martensite on the microstructural evolution during intercritical annealing and the tensile properties of annealed specimens were investigated for Fe-9Mn-0.05C (wt.%) steel.
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Microstructures and mechanical properties of Ti and Mo micro-alloyed medium Mn steel
TL;DR: In this article, microstructures and tensile properties of a Ti and Mo micro-alloyed ultrafine-grained medium Mn TWIP-TRIP steel were investigated.
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Effect of hot rolling temperature on grain size and precipitation hardening in a Ti-microalloyed low-carbon martensitic steel
TL;DR: In this paper, the grain refinement and strength improvement resulted from hot rolling temperature in Ti microalloyed low carbon martensitic steel was investigated in two different started hot rolling temperatures (950°C and 1100°C) but with the same reheating quenching process were applied to the steel.
Journal ArticleDOI
Effect of nano-sized TiC particle addition on microstructure and mechanical properties of SA-106B carbon steel
TL;DR: The dispersion behavior of nano-sized TiC particles treated by different processes and its influence on microstructural and mechanical modification has been investigated in SA-106B carbon steel with different TiC contents as discussed by the authors.
Journal ArticleDOI
Effects of using (Ti,Mo)C particles to reduce the three-body abrasive wear of a low alloy steel
TL;DR: In this paper, a new low-alloy wear resistant steel reinforced with (Ti,Mo)C particles was developed and the three-body abrasive wear behavior of the experimental steel has been studied using a standard dry sand rubber wheel wear testing procedure under applied loads of 45 and 130 N.
References
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Book
The Physical Metallurgy of Microalloyed Steels
TL;DR: In this article, the authors provide a substantial background to microalloyed steels with a wide selection of applications, some of which are very recent, and a well-illustrated practical guide.
Journal ArticleDOI
The dislocation distribution, flow stress, and stored energy in cold-worked polycrystalline silver
J. E. Bailey,P. B. Hirsch +1 more
TL;DR: In this paper, the distribution and densities of dislocations, determined by electron transmission microscopy, flow stress and stored energy measurements (by microcalorimetry) on cold-worked polycrystalline silver are correlated with each other.
Journal ArticleDOI
Precipitation behavior and its effect on strengthening of an HSLA-Nb/ti steel
TL;DR: In this paper, the precipitation behavior of a commercial high-strength low-alloy (HSLA) steel microalloyed with 0.086 wt pct Nb and 0.047 wtpct Ti has been investigated using transmission electron microscopy (TEM) and mechanical testing.
Journal ArticleDOI
Strain-induced precipitation of NbC in Nb and Nb-Ti microalloyed HSLA steels
Sangsu Hong,K.B. Kang,C.G. Park +2 more
TL;DR: In this paper, the precipitation start time (Ps) of strain-induced NbC carbides is delayed in Nb-Ti steel in comparison to the case of Nb steel.
Journal ArticleDOI
Complex heterogeneous precipitation in titanium-niobium microalloyed Al-killed HSLA steels - I. (Ti,Nb)(C,N) particles
TL;DR: In this article, an extensive formation of heterogeneously nucleated complex (Ti,Nb)(C,N) particles down to 10 nm in size was observed in both the as-rolled and the normalised conditions using analytical electron microscopy including parallel electron energy loss spectroscopy.