Metallurgical Aspects of Laser Surface Processing of PM Cr-V Ledeburitic Steel. (13th December 2010)

• Record Type: Journal Article
• Authors: Jurči, Peter; Cejp, Jiři; Brajer, Jan
• Other Names: Dutta Majumdar J. Academic Editor.
• Is Part Of: Advances in materials science and engineering. Volume 2011(2011)
• Publication Date: 2010-12-13
• Subjects: Materials science -- Periodicals; Materials science; Periodicals; 620.11
• DOI: 10.1155/2011/563410
• Languages: English
• ISSNs: 1687-8434

Abstract

Abstract : The Vanadis 6 ledeburitic-type steel was laser surface remelted. Microstructural changes and hardness in laser affected material were investigated using light microscopy, SEM, and EDS-microanalysis. It was found that the laser surface melting and subsequent rapid solidifying led to softening of the material, due to presence of retained austenite. The melting of the material begins with the transformation of M7 C3 -carbide into a liquid and finishes via the dissolution of primary solid solution grains. The solidification proceeded in a reverse manner while the eutectics became often so-called degenerous form.