Hot cracking behavior of carbide-free bainitic weld metals. (15th February 2016)

• Record Type: Journal Article
• Authors: Krishna Murthy, N.; Janaki Ram, G.D.
• Is Part Of: Materials & design. Volume 92(2016)
• Page Start: 88
• Page End: 94
• Publication Date: 2016-02-15
• Subjects: Carbide-free bainite -- Solidification cracking -- Varestraint test -- Hot ductility test; Materials -- Periodicals; Engineering design -- Periodicals; Matériaux -- Périodiques; Conception technique -- Périodiques; Electronic journals; 620.11
• DOI: 10.1016/j.matdes.2015.12.020
• Languages: English
• ISSNs: 0264-1275

Abstract

Abstract: In this work, hot cracking behavior of a carbide-free bainitic weld metal was investigated using Varestraint tests and Gleeble hot ductility tests. The results show that the carbide-free bainitic weld metal is as resistant to hot cracking as many of the standard austenitic stainless steel weld metals. The effects of composition, solidification mode, and impurity content on hot cracking susceptibility of carbide-free bainitic steels are discussed. Some guidelines for optimizing their compositions for superior hot cracking resistance are also presented. Graphical abstract: Highlights: First report on hot cracking behavior of carbide-free bainitic (CFB) weld metals CFB weld metals show comparable hot cracking resistance to most austenitic steels. Strategies for optimization of CFB weld metal compositions discussed