Manufacturing Technology 2019, 19(2):308-313 | DOI: 10.21062/ujep/288.2019/a/1213-2489/MT/19/2/308

Analysis of Fractured Weldment of Hadfield Steel

Vojtěch Průcha1, Antonín Kříž1, Ondřej Žďánský2, Milan Vnouček1
1 Faculty of Mechanical Engineering, University of West Bohemia. Univerzitní 22, 306 14 Pilsen. Czech Republic
2 Wheelabrator Czech, s.r.o., Za Balonkou 269, 26101 Příbram I. Czech Republic

This contribution is divided into two sections. The first one deals with identifying the cause of fracture in a ring, which fractured after weld surfacing. Optical and scanning electron microscopy and hardness testing were employed. Chemical composition was determined using the GDOES and EDX methods. Although weld surfacing has led to fracture in the base material, the actual problem was in the inadequate microstructure of the base material. Microscopic analysis revealed that it was heterogeneous. It contained distinctive segregation bands with bands of complex carbides and pearlite colonies, which are undesirable. The microstructure of this steel should be fully austenitic. In order to remove the heterogeneities, solution annealing was proposed and carried out successfully. The second section of this paper explores the options for revealing the microstructure of Hadfield steel. Etching reagents from the literature and authors' experience were put to test.

Keywords: Hadfield steel, welding of Hadfield steel, etching of Hadfield steel, microstructure of Hadfield steel
Grants and funding:

Project no. SGS-2016-036 Analysis, development and modification of manufacturing technology in volume processing of advanced materials used in energy machinery, transport equipment and related engineering applications.

Published: April 1, 2019  Show citation

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Průcha V, Kříž A, Žďánský O, Vnouček M. Analysis of Fractured Weldment of Hadfield Steel. Manufacturing Technology. 2019;19(2):308-313. doi: 10.21062/ujep/288.2019/a/1213-2489/MT/19/2/308.
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