Calculation of hardenability in the Jominy end quench test on the basis of the Chemical composition of steels. Calcul de la trempabilité par l’essai Jominy à partir. Jominy end-quench test P. Le Masson, P. Rogeon, D. Carron, J.J. QuemenerIdentification du coefficient de transfert lors d’un essai Jominy instrumenté. Steel — Hardenability test by end quenching (Jominy test). Acier — Essai de trempabilité par trempe en bout (essai Jominy). Provläsningsexemplar.

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File:Essai jominy.svg

History of Wind Energy Wind Power. The cooling rate will be highest at the end being quenched, and will decrease as distance from the end increases.

Jominy served as president of ASM in Related Articles Short time austenitizing effects on the hardenability of 0.

Modern materials and manufacturing processes. The mechanism by which these alloying elements operate jomimy to expand the time before the start of the austenite-to-pearlite transformation in the TTT diagram.

It should not be confused with hardnesswhich is a measure of a sample’s resistance to indentation or scratching. Precipitation hardening Heat ojminy of steel. This information is plotted on a hardenability graph.


The fluid used for quenching the material influences the cooling rate due to varying mominy conductivities and specific heats. Services Same authors – Google Scholar.

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Metrics Show article metrics. The hardenability of a metal alloy is the depth to which a material is hardened after putting it through a jomiy treatment process.

The current usage metrics is available hours after online publication and is updated daily on week days. Retrieved from ” https: This page was last edited on 21 Augustat Heat Treatment Process of Steels.

The mainly common technique for measuring hardenability is the Jominy end-quench test. From Wikipedia, the free encyclopedia. Heat Treatment Methods of steel. In other ojminy Wikimedia Commons. Therefore, the cooling curve is able to follow a less hastened path to the Ms line, more simply avoiding the nose of the TTT curve.

This results in a work-piece that does not have the same crystal structure throughout its entire depth; with a softer core and harder “shell”.


Retrieved 9 December The inner depths of the material however, do not cool so rapidly, and in work-pieces that are large, the cooling rate may be slow enough to allow the austenite to transform fully into a structure other than kominy or bainite.


If the fluid is agitated cooling occurs even more quickly.

Jominy and A. This group has been busy for a few years in calculating the hardenability in the end quench test on jomniy basis of the Chemical composition of steels. Thus different existent formulae of the works can be substituted by the common formulae and recommendations for the calculation and evaluation of formulae for further steels are now available.

The Jominy end-quench test was invented by Walter E. Paris, 89 1 Abstract.

Hardenability – Wikipedia

In result, the TTT curve is moved to the right, thus permitting very slower quenching rates during quenching. Paris Volume 89, Number 1Janvier The hardenability of ferrous alloys, i. The farther away from the quenched end that the hardness extends, the higher the hardenability.