Mössbauer study of the effect of alloying elements on the carbide phase in cold-worked steel

Gavrilyuk, V. G.; Prokopenko, V. G.; Razumov, O. N.

doi:10.1002/pssa.2210530115

Cited by 22 publications

(13 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[16][17][18][19][20] Such dissolution of q during cold drawing was also pointed out by means of Mössbauer spectroscopy. 3,[21][22][23] In fact, the present authors also observed the nanocrystalline q formed by heavy cold rolling. 2) Thus, the strain hardening of pearlite structure cannot be simply explained by the refining of ISP.…”

Section: The Strengthening Of Pearlite By Cold Rollingmentioning

confidence: 65%

“…19) A Mössbauer study on the alloying effect on the q dissolution shows that the amount of dissolution changes depending on the third alloying element. 21) For example, Mn favors the q dissolution whereas Si does not influence noticeably. However, a further study is necessary to examine the dissolution of q in the alloyed pearlite by cold deformation.…”

Section: The Strengthening Of Pearlite By Cold Rollingmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Mn and Si Addition on Microstructure and Tensile Properties of Cold-rolled and Annealed Pearlite in Eutectoid Fe-C Alloys

Maki

2004

ISIJ International

View full text Add to dashboard Cite

The microstructures and tensile properties of cold-rolled and annealed pearlite in Fe-0.8mass%C alloys with various contents of Mn and Si were investigated. With the addition of Mn and Si, the tensile strength (TS) and yield strength (YS) of cold-rolled and annealed pearlite were vastly improved, but its effect on ductility of the cold-rolled pearlite is negligible. The addition of Si is quite effective in improving the ductility of coldrolled and annealed pearlite, especially when the strength is at a higher level, i.e., lower annealing temperature or shorter annealing period. The optimal tensile properties in the alloys with Mn or Si were obtained after annealing at 723 K for short annealing periods (30 to 120 s). The combined addition of Mn and Si is more effective in improving the tensile properties of cold-rolled and annealed pearlite.KEY WORDS: pearlite; eutectoid steel; cold working; annealing; ultrafine-grained microstructure; mechanical property. Table 1. Chemical compositions of the alloys used (mass%).Philips CM200). The specimens for SEM observation were etched with 1 % nital after mechanical polishing. Thin foils for TEM observation were cut by an electrode discharge machine to 0.5 mmϫ0.5 mmϫ3.0 mm, mechanically thinned to 50 mm thick, and electropolished by a twin-jet polisher with 5 % perchloric acid and acetic acid solution at 36 V and 284 K.ISP in each as-transformed specimen was determined by using the TEM micrographs on which q lamellae interface was parallel to the incident beam. The q particle sizes in the specimens annealed at 923 K were determined by SEM. Using the Image analysis software (AnalySIS), which digitizes an image from the photograph, the stained carbides were identified based on gray level and separated for analysis. The area (A) of a 2-dimentional section at the polished plane was measured for each particle, and converted to an equivalent circle diameter (ECD; ϭ(4 A/p) 1/2 ) of the particle. 10) At least, four micrographs were taken with a magnification from 3 000 to 20 000 for each specimen. The total number of measured particles ranged from approximately 500 to 1 300, depending on materials and annealing periods at 923 K.The XRD (X-ray diffraction) experiment was carried out on a Philips PW1078/50 X-ray diffractometer. The tube voltage and current were 40 kV and 40 mA, respectively. The tube anode was Cu K a1 (lϭ0.15406 nm), and the receiving slit was 2 mm. The precise position of each peak was determined with the method "width of the curve at half ".Tensile tests were performed at the initial strain rate of 2ϫ10 Ϫ3 /s for the specimens of which gage size was 2.5 mm w ϫ8.5 mm l ϫ0.5 mm t and longitudinal direction was parallel to the rolling direction (RD). Results Microstructure and Tensile Properties of theAs-transformed Pearlite After austenitization at 1 123 K for 1.8 ks and subsequent isothermal transformation at 873 K for 0.6 ks, fully pearlitic structures contained mostly of lamellar cementite were obtained. The effect of Mn and Si addition on ISPs and tensile propert...

show abstract

Section: The Strengthening Of Pearlite By Cold Rollingmentioning

confidence: 65%

Section: The Strengthening Of Pearlite By Cold Rollingmentioning

confidence: 99%

Effect of Mn and Si Addition on Microstructure and Tensile Properties of Cold-rolled and Annealed Pearlite in Eutectoid Fe-C Alloys

Maki

2004

ISIJ International

View full text Add to dashboard Cite

show abstract

“…This indicates that the alloying elements Ni and Cr would decrease the dissolution rate of lamellar cementite during wire drawing. The delayed occurrence of delamination due to the addition of Ni is well explained by Gavrilyuk [22]. A remarkable decrease in the binding enthalpy between carbon atoms and dislocations diminishes the effect of cementite decomposition.…”

Section: Effect Of Alloying Elements On the Occurrence Of Delaminationmentioning

confidence: 96%

“…According to Gavrilyuk [21,22], the addition of alloying elements to pearlitic steels affects the decomposition of cementite during wire drawing by changing the interatomic bonds in cementite and the binding enthalpy between carbon atoms and dislocations in ferrite.…”

Section: Effect Of Alloying Elements On the Occurrence Of Delaminationmentioning

confidence: 99%

The effects of alloying elements on tensile strength and the occurrence of delamination in cold-drawn hyper-eutectoid steel wires

Park

Lee

et al. 2009

Met. Mater. Int.

View full text Add to dashboard Cite

The effects of alloying elements and initial interlamellar spacing on tensile strength and the occurrence of delamination in cold-drawn hyper-eutectoid steel wires were investigated under equivalent drawing conditions. The initial interlamellar spacing showed little influence on the occurrence of delamination. The addition of Cr effectively increased attainable tensile strength, since the added Cr not only increased tensile strength but also delayed delamination. The addition of Ni also increased attainable tensile strength, since the effect of the added Ni on delaying delamination prevailed over the tendency to decrease tensile strength and work hardening. The addition of Cr increased the attainable tensile strength more effectively than the addition of Ni in cold-drawn hyper-eutectoid steel wires, although the added Ni markedly delayed delamination-associated strain.

show abstract

“…Accordingly, the decomposition of the cementite may possibly reduce the RA of the drawn steel wires. The degree of cementite decomposition during the wire drawing depends on the deformability of the lamellar cementite, which is influenced by the chemical compositions of steels [22] in addition to the initial interlamellar spacing [23]. The strong binding energy between the Cr and carbon atoms may likely delay the decomposition of cementite during the wire drawing.…”

Section: Ductility Of Cold Drawn Wiresmentioning

confidence: 99%

The effect of a Cr addition and transformation temperature on the mechanical properties of cold drawn hyper-eutectoid steel wires

et al. 2006

View full text Add to dashboard Cite

The effects of a Cr addition and transformation temperature on the strength and work hardening behavior of cold drawn hyper-eutectoid steel wires are investigated in this study. The Cr addition was found to be effective for increasing the tensile strength and work hardening rate, k/(2 Oo) 1/2 , due to the refinement of the initial interlamellar spacing and the increment of the Hall-Petch parameter. While the work hardening rate, k/(2 Oo) 1/2 , was significantly influenced by the magnitude of the interlamellar spacing, the Hall-Petch parameter, k, was not affected by the interlamellar spacing. Additionally, the refinement of the interlamellar spacing due to the low transformation temperature and the Cr addition caused an increase of the RA in drawn pearlitic steels.

show abstract

Mössbauer study of the effect of alloying elements on the carbide phase in cold-worked steel

Cited by 22 publications

References 6 publications

Effect of Mn and Si Addition on Microstructure and Tensile Properties of Cold-rolled and Annealed Pearlite in Eutectoid Fe-C Alloys

Effect of Mn and Si Addition on Microstructure and Tensile Properties of Cold-rolled and Annealed Pearlite in Eutectoid Fe-C Alloys

The effects of alloying elements on tensile strength and the occurrence of delamination in cold-drawn hyper-eutectoid steel wires

The effect of a Cr addition and transformation temperature on the mechanical properties of cold drawn hyper-eutectoid steel wires

Contact Info

Product

Resources

About