Analysis of Macrosegregation in Large Size Forged Ingot of High Strength Steel
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 2cm 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.
steel large ingot macrosegregation homogeneity carbon chromium
Abdelhalim LOUCIF Emna BEN FREDJ Mohammad JAHAZI Louis-Philippe LAPIERREBOIRE Rami TREMBLAY Raymond BEAUVAIS
(E)cole de technologie supérieure,Dép génie Mécanique,1100 rue Notre-Dame Ouest Montréal QC,H3C1K3,C Sorel Forge Inc.,100 McCarthy,Saint-Joseph-de-Sorel,QC,J3R 3M8,Canada
国际会议
the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)
北京
英文
1043-1046
2015-05-12（万方平台首次上网日期，不代表论文的发表时间）