Open AccessEffects of Friction Pressure on Microstructures and Mechanical Properties of Friction Welded T92/Super304H Dissimilar Steel Weld Joints
Author(s) -
Debiao Li,
Yuan Lu,
Mo Chen,
Yu Sun,
Lining Wang,
Cong Ding
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/721/1/012005
Subject(s) - welding , materials science , metallurgy , friction welding , martensite , microstructure , austenite , ultimate tensile strength , heat affected zone , composite material
In this paper, the T92 martensitic steel and the Super304H austenitic steel were welded by continuous drive friction welding technique. The friction welding joints exhibited good mechanical and metallurgical properties. The influence of friction pressure on the microstructures and mechanical properties of T92/Super304H dissimilar steel joints was investigated. With an increase in the friction pressure, the grains in the welding zone and the heat affected zone didn’t grow up and the number of second-phase particles precipitates increased. The Vickers hardness increased and the impact toughness decreased, the tensile fracture and fracture location didn’t change.