Effect of tempering temperature on the mechanical properties and microstructure of an copper-bearing low carbon bainitic steel

Guo, Aimin; Song, Xinli; Jin-quan, Tang; Zhou, Yuan

doi:10.1016/s1005-8850(08)60008-0

Cited by 10 publications

(8 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, higher copper contents are introduced to induce precipitation strengthening and address the loss associated with low carbon. The combination of these enhancements with controlled rolling and cooling processes enabled the plate steel to meet the high strength and toughness requirements [3,6]. Copper-containing ship plate steel exhibits a significant precipitation strengthening effect capable of achieving carbon-independent strengthening.…”

Section: Introductionmentioning

confidence: 99%

Effect of Reheating Temperature on the Microstructure and Properties of Cu-Containing 440 MPa Grade Non-Tempered Ship Plate Steel

Zhang,

Chai,

Luo

et al. 2024

Materials

View full text Add to dashboard Cite

This study investigated the effects of reheating temperature on the microstructure and mechanical properties of Cu-containing 440 MPa grade non-tempered ship plate steel. The mechanical properties test, thermodynamic simulation, optical microscopy, scanning electron microscopy, transmission electron microscopy, and other tests were performed. The results revealed that with increasing reheating temperature, the ferrite grain size of Cu-containing 440 MPa non-tempered ship plate steel increased. Also, with increasing reheating temperature, the size of copper particles and niobium–titanium composite precipitates in the original austenite decreased. Consequently, this led to a weakening of the pinning effect on the original austenite and an increase in the size of the transformed ferrite grains. Moreover, with increasing reheating temperature, the number of Cu precipitates in the test steel after air cooling and rolling increased, while the size of the precipitates decreased, thereby weakening the solid solution strengthening effect of Cu, and precipitation was enhanced. Additionally, as the reheating temperature increased, the tensile strength and yield strength of the air-cooled test steel after rolling increased, while the impact toughness decreased.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Reheating Temperature on the Microstructure and Properties of Cu-Containing 440 MPa Grade Non-Tempered Ship Plate Steel

Zhang,

Chai,

Luo

et al. 2024

Materials

View full text Add to dashboard Cite

show abstract

“…The effect of the surface absorbed hydrogen is not clear. However, it was found that the bulk hydrogen did have a distinct influence on the fracture strength of the freestanding diamond films [12]. As shown in fig.…”

mentioning

confidence: 95%

“…(a) high concentration (b) low concentration Figure 2 Effect of nitrogen on the fracture strength of freestanding diamond films [12] Figure 3 Effect of bonded hydrogen on the fracture strength of freesatnding diamond films [12] Figure 4 Correlation relationship between non Diamond carbon and the bonded hydrogen Effect of hydrogen impurity Hydrogen is also the most common impurity in CVD diamond films which is existed at the surface as surface absorbent (for effective termination of the carbon tangling bonds) as well as in the bulk in the diamond lattice which is always associated (bonded) to the non-diamond carbon in the sp2 hybrid bonding configurations and can be experimentally measured from the UV or IR absorption peaks due to the vibration of the C-H bond configurations. The surface hydrogen can be obtained by extracting the bonded hydrogen from the total hydrogen concentration meassured by the nuclear reaction (NRA) methode [12]. The effect of the surface absorbed hydrogen is not clear.…”

mentioning

confidence: 99%

Factors Affecting the Fracture Strength of Freestanding Diamond Films

Song

Hei

et al. 2013

KEM

View full text Add to dashboard Cite

show abstract

“…Many kinds of ultra-low carbon bainitic steels (ULCB) have been developed for structural applications with optimal mechanical properties in recent years [10][11][12][13]. Although the weldability is improved by carbon content reduction and the strength is raised by bainitic microstructure, the higher yield ratio and lower temperature toughness are still to be solved.…”

Section: Introductionmentioning

confidence: 99%

Toughening mechanisms of a high-strength acicular ferrite steel heavy plate

Cao

Bao

Xia

et al. 2010

Int J Miner Metall Mater

View full text Add to dashboard Cite

An ultra-low carbon acicular ferrite steel heavy plate was obtained with an advanced thermo-mechanical control process-relaxed precipitation controlled transformation (TMCP-RPC) at Xiangtan Steel, Valin Group. The heavy plate has a tensile strength of approximately 600 MPa with a lower yield ratio. The impact toughness of the heavy plate achieves 280 J at −40°C. The fine-grained mixed microstructures of the heavy plate mainly consist of acicular ferrite, granular bainite, and polygonal ferrite. The high strength and excellent toughness of the heavy plate are attributed to the formation of acicular ferrite microstructure. The prevention of blocks of martensite/retained austenite (M/A) and the higher cleanness are also responsible for the superior toughness.

show abstract

Effect of tempering temperature on the mechanical properties and microstructure of an copper-bearing low carbon bainitic steel

Cited by 10 publications

References 9 publications

Effect of Reheating Temperature on the Microstructure and Properties of Cu-Containing 440 MPa Grade Non-Tempered Ship Plate Steel

Effect of Reheating Temperature on the Microstructure and Properties of Cu-Containing 440 MPa Grade Non-Tempered Ship Plate Steel

Factors Affecting the Fracture Strength of Freestanding Diamond Films

Toughening mechanisms of a high-strength acicular ferrite steel heavy plate

Contact Info

Product

Resources

About