Analysis of macrosegregation in large size forged ingot of high strength steel

Loucif, Abdelhalim, Fredj, Emna Ben, Jahazi, Mohammad, Lapierreboire, Louis-Philippe, Tremblay, Rami et Beauvais, Raymond. 2015. « Analysis of macrosegregation in large size forged ingot of high strength steel ». In Proceedings of the 6th International Congress on the Science and Technology of Steelmaking (ICS 2015) (Beijing, China, May 12-14, 2015) pp. 1043-1046. Chinese Society for Metals.
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Abstract

The macrosegregation levels of C, Mn, Ni, Cr and V were evaluated experimentally in in large size forging made of high strength steel. The analysis was performed on a 2 cm thick slice cut along the longitudinal axis of a medium carbon steel bloc which has undergone casting, forging and heat treatment. The slice was then cut into small specimens. Chemical analysis was carried out on these specimens to obtain the chemical map of the different elements. Analysis of the macrosegregation mapping revealed the existence of positive and negative segregation types. The most segregated elements were C for positive segregation and Cr for negative segregation. V and Ni did not present an important segregation degree. Microstructure examination using optical microscopy revealed mostly a bainitic structure. The presence of retained austenite was not detected. Hardness measurements in two samples having high and low levels of macrosegregation did not reveal major differences.

Item Type:	Conference proceeding
Professor:	Professor Jahazi, Mohammad
Affiliation:	Génie mécanique
Date Deposited:	06 Jul 2016 12:53
Last Modified:	03 Dec 2021 16:38
URI:	https://espace2.etsmtl.ca/id/eprint/12947

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