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THE EFFECT OF EMPLOYING NITROGEN SOLUTION AS A QUENCHING MEDIUM FOR STEELS (GR 1042 AND GR 4140) | ||
| AL-TAQANI | ||
| Article 1, Volume 25, Issue 1, 2012, Pages 0-0 | ||
| Abstract | ||
| The aim of this research is to study the possibility of the use of Nitrogen fertilizer solution as a quenching medium for medium carbon steel Gr 1042 and low alloy steel Gr4140 and its effect on mechanical properties of both steels. The heat treatment were conducted which include heating the steel to (850-900) Ċ for (10 &15) min. respectively and then quenching into Nitrogen solutions. Results showed that the Rockwell hardness values of both steels employed in research increases with the increasing of the Nitrogen fertilizer solution concentration while retaining an acceptable impact strength. The results shows that the Nitrogen solutions have high cooling rate in diffusion transformation region, and this ensure that any part of the austenite does not transform pearlite in its various forms. | ||
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