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Creep Resistance of VM12 Steel

Zieliński A., Golański G., Dobrzański J., Sroka M.

Archives of Metallurgy and Materials

2016

Vol. 61, iss. 3

1635--1640

This article presents selected material characteristics of VM12 steel used for elements of boilers with super- and ultra-critical steam parameters. In particular, abridged and long-term creep tests with and without elongation measurement during testing and investigations of microstructural changes due to long-term impact of temperature and stress were carried out. The practical aspect of the use of creep test results in forecasting the durability of materials operating under creep conditions was presented. The characteristics of steels with regard to creep tests developed in this paper are used in assessment of changes in functional properties of the material of elements operating under creep conditions.