Title

Effect Of Quenching Media, Specimen Size And Shape On The Hardenability Of AISI 4140 Steel

Document Type

Journal Article

Publisher

United Arab Emirates University

Faculty

Faculty of Health, Engineering and Science

School

School of Engineering

RAS ID

17765

Comments

This article was originally published as: Altaweel, A. R., & Tolouei Rad, M. (2014). Effect of quenching media, specimen size and shape on the hardenability of AISI 4140 steel. Emirates Journal for Engineering Research, 19(2), 33-39. Original article available here

Abstract

The purpose of this study is to investigate the influence of different quenching media, size and shape of the specimen on the hardened depth of AISI 4140 steel. The paper demonstrates how these parameters can affect the hardness from the surface to the core of the samples. This study represents the relationship between hardened depth and geometry. Findings reveal the fact that high hardening effect was obtained in water-quenched samples by the virtue of the martensitic structure and lower hardened depth achieved in the air-quenched samples. Significant improvement achieved by increasing the velocity of air when quenched by compressed air. It was also concluded that the hardness of the quenched samples at certain depths can be estimated on the basis of heat transfer equations.

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