Kinetics of softening processes in steel 5KhV2S after HTTMT

Tushinskii, L. I.; Tikhomirova, L. B.; Reshedko, Peter

doi:10.1007/bf00651900

Cited by 2 publications

(4 citation statements)

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“…This agrees with Tushinskii etal. [15] and Bol'shakov etal. [12] who have reported that when hotworked low-alloy steel was held isothermally after hot-working for about 7 min the precipitation of alloy carbides was observed in the hot-deformed austenite structure, which retarded the process of recrystallization in the austenite grains.…”

Section: Microscopic Observationmentioning

confidence: 93%

“…work of Tushinskii etal. [15], both specimen hardness and Tushinskii line-bieadth [15] were measured for holding times at 900~ from 1 to 20 min after deformation. The results are shown in Fig.…”

Section: Microscopic Observationmentioning

confidence: 99%

“…X-ray diffraction analysis was conducted on (1 1 0)ra profdes since this diffraction plane in martensite structure gives the largest intensity. The breadth of this X-ray diffraction profile was used to ascertain the development of recovery and recrystallization during HTMT based on the Tushinskii technique [15]. Precipitation and distribution of carbide precipitates were examined by the carbon extraction replica method under a Hitachi JEM-30 transmission electron microscope operated at 125 kV.…”

Section: Microscopic Observationmentioning

confidence: 99%

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Effect of high temperature thermomechanical treatment on the mechanical properties of vanadium – modified AISI 4330 steel

Lee¹,

Chun²

1981

J Mater Sci

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The relationships between the recovery and recrystallization of hot-deformed austenite grains and the precipitation of carbide on tempering in a 0.3C-Ni-Cr-Mo-V steel have been studied to examine closely the favourable effects of high-temperature thermomechanical treatment (HTMT) on the mechanical properties in steel. The results show that the strength and toughness increase with increasing degree of deformation by HTMT, particularly in which the ductile-brittle transition temperature as a measure of toughness decreases steeply with increasing degree of deformation. From the analysis of line broadening on (1 1 0)M and hardness change with holding time after hot deformation, the dynamic recovery and recrystallization during HTMT are believed not to occur. Owing to this, the random distribution of fine carbide precipitates in martensite structure is hardly affected. Consequently, the improvement of mechanical properties by HTMT is due to the distribution of fine carbide precipitates within martensite lath and the refinement of the martensite stru ctu re.

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Section: Microscopic Observationmentioning

confidence: 93%

Section: Microscopic Observationmentioning

confidence: 99%

Section: Microscopic Observationmentioning

confidence: 99%

See 1 more Smart Citation

Effect of high temperature thermomechanical treatment on the mechanical properties of vanadium – modified AISI 4330 steel

Lee¹,

Chun²

1981

J Mater Sci

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show abstract

“…The effect of post deformation holding time on the strength of austenite and the resulting martensite is shown in Figure 6 for a SKhV2S low alloy die steel (48). Softening occurs in four stages : ( a ) There is a constant austenite and martensite stiength during static recovery .…”

mentioning

confidence: 99%