Hassan S.B., Agboola, J.B., Aigbodion, V.S. and Williams, E.J. (2010) Hardening Characteristics of Plain Carbon Steel and Ductile Cast Iron Using Neem Oil as Quenchant. Journal of Minerals and Materials Characterization and Engineering, 5, 31-36.

has been cited by the following article:

• TITLE: Effect of Velocity of Impact on Mechanical Properties and Microstructure of Medium Carbon Steel during Quenching Operations

  AUTHORS: Joseph Babalola Agboola, Oladiran Abubakre Kamardeen, Edeki Mudiare, Michael Bolaji Adeyemi

  KEYWORDS: Quenching, Modeling, Velocity, Impact, Mechanical Properties, Steel

  JOURNAL NAME: Engineering, Vol.7 No.7, July 17, 2015

  ABSTRACT: Theoretical analysis of the effects of velocity of impact using suitable heat transfer equations expressed in forms of finite difference method was developed and used to determine their effects on the characteristic cooling parameters during quenching process. Various velocities of impact obtained by varying the heights of specimen drops were also used to experimentally determine their effects on characteristic cooling parameters and mechanical properties of medium carbon steel using water as the quenching medium. At height of drop of 0.5 m, 1.0 m, 1.5 m, and 2.0 m, the tensile strength of the material is 410.4, 496.12, 530.56, and 560.40 N/mm2 respectively. The corresponding hardness values are 42.4, 45.2, 46.2, 50.5 HRC respectively. It is found that as the velocity of impact increases, maximum cooling rate increases. Hardness and ultimate tensile strength also increase. There are good agreements between theoretical and experimentally determined values of critical cooling parameters of water during quenching operations.