Segregation of Elements in Corrosion Resistant Castings of Diversified Wall Thickness

Archives of Metallurgy and Materials

P. Malatyńska¹ 

[1] AGH UNIVERSITY OF SCIENCE AND TECHNOLOGY, FACULTY OF FOUNDRY ENGINEERING, REYMONTA ST. 23, 30-059 KRAKÓW, POLAND;

关键词: Keywords: segregation of elements;    stainless steel;    ferrite;    carbides;   

DOI  :  10.2478/amm-2013-0070

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

The segregation of elements in two corrosion resistant cast steel grades Cr18-Ni9-Mo, in castings of wall thickness: 7, 15 and 30 mm were performed. The results indicate the analogous path of curves of the content of Fe, Cr, Ni, Mo and C, in walls of various thickness. Decrease in the content observed in the delta ferrite Fe (2 to 3 wt. %), Ni (from 3.5 to 5 wt. %) and C (about 1 wt. %), where the Mo and Cr increased their content of 2% wt. %, and about 6% wt. respectively in the case of the two test cast. For the test steel Q2 with a carbon content 0.054 wt. % were found carbides in the form of white precipitates on the grain boundary of delta ferrite. This resulted in the occurrence of the peaks in the lines of the element distribution analysis especially for molybdenum, iron and carbon, as shown in the diagrams for various segregation of wall thickness.

【 授权许可】

Unknown