Mechanical and microstructural evaluation of dual phase steel, quenched in bitumen and water at an intercritical temperature: effect of holding time

Olorundaisi, Emmanuel; Jamiru, Tamba; Adegbola, T. A.

doi:10.1088/2053-1591/ab4747

Cited by 1 publication

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References 24 publications

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“…To effect this change, temperature (T) and holding time (HT) plays an important role [2,3,9]. Other important factors influencing the mechanical properties of DP steels are quenching medium, cooling rate, morphology (grain size and pattern), and the chemical composition of the material [10]. DP steel with an arrangement such that the martensitic phase stand in isolation within the ferrite's matrix is said to possess a lesser strength as compared to a chain-like arrangement within the ferrite [8].…”

Section: Introductionmentioning

confidence: 99%

Optimization and Microstructural Evaluation of Processing Parameters on the Density and Surface Hardness of Dual Phase Steel

Olorundaisi¹

2021

SJRR

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The body frame of the automobile is an essential and critical component of a car. This part when subjected to extreme impact, could lead to mechanical failure, which could endanger human life. The effectiveness of the material in safeguarding human life can be influenced by both the selection of materials and the manufacturing process. Dual Phase (DP) steel of 600 grades was developed from low carbon steel (0.13wt) at different temperatures and holding time using bitumen as the quenching medium. The material was developed with improved mechanical properties to withstand impact due to accidents. The influence of processing parameters on the surface hardness and density was analyzed using response surface methodology to develop a prediction model. The relationship existing between density and the hardness of Dual Phase steel was established in this study. It was discovered that the increase in density resulted in an improvement of the surface hardness as a result of the reduction in pores. The SEM micrographs revealed the extent of the dispersion of the ferrite and martensite as a function of the holding time. To ascertain the experimental outcome, a model on a statistical four-level and two factorial design method was carried out. Based on the statistical analysis, surface hardness (SH) shows a correlation coefficient of R 2 = 0.9522 while Density gave R 2 = 0.9859, P-values obtained were less than 0.1 and there is only a 0.01% chance that the F-values obtained could occur due to noise.

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Section: Introductionmentioning

confidence: 99%

Optimization and Microstructural Evaluation of Processing Parameters on the Density and Surface Hardness of Dual Phase Steel

Olorundaisi¹

2021

SJRR

View full text Add to dashboard Cite

show abstract

Mechanical and microstructural evaluation of dual phase steel, quenched in bitumen and water at an intercritical temperature: effect of holding time

Cited by 1 publication

References 24 publications

Optimization and Microstructural Evaluation of Processing Parameters on the Density and Surface Hardness of Dual Phase Steel

Optimization and Microstructural Evaluation of Processing Parameters on the Density and Surface Hardness of Dual Phase Steel

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