Home FOR AUTHORS Kovove Materialy-Metallic Materials 2014 Metallic Materials Vol. 52 (2014), no. 2, pp.99-106

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Metallic Materials Vol. 52 (2014), no. 2, pp.99-106

Title: Microstructure, properties and welding of T24 steel – critical review

Abstract: In this paper a new bainitic 7CrMoVTiB10-10 (T24) steel has been described on the basis of our own research results and a review of relevant literature. The T24 creep-resistant steel is known to be intended for membrane walls in power-generation units operating at supercritical steam parameters. Chemical composition, thermal treatment, microstructure and mechanical properties of T24 steel were characterized. Moreover, the processes of microstructure degradation during ageing/creeping and their effects on mechanical properties have been shown. Weldability of T24 steel and the problems connected with cracking of its homogenous joints, as well as the methods of preventing them, are given in the paper.

Keywords: bainitic steels, microstructure, welding, cracking
Year: 2014, Volume: 52, Issue: 2 Page From: 99, Page To: 106

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