Neutron and X-ray diffraction study of residual and internal stress evolution in pearlitic steel during cold drawing

Abstract

Neutron and X-ray diffraction were used to study the residual and internal stress evolution during cold drawing in pearlitic steel wires. A selection of high strength filaments drawn to different reductions has been investigated. In order to compare the evolution of macro and micro residual phase stresses in ferrite, the lattice strain evolution has been studied in axial and transverse direction. In-situ neutron diffraction tests in "Poisson" geometry have been carried out at the TOF strain scanner POLDI at PSI, Switzerland. These tests revealed a significant scatter in mechanical response among differently oriented ferrite grains, including a peculiar response of the {200} reflection, cp. [1, 2].

X-ray Diffraction Analysis of Severely Cold Deformed Hypereutectoid Steel Wire

“…XRD analysis has been done on Cu 3-7 , ferritic-pearlitic steel 8 , Aluminium 9-10 martensitic steel [11][12] , pearlitic steel [13][14][15] , nickle 16 ,FeN 17 , 10Cr-5W heat resistant steels 18 . The elaborate study on elastic constants 19 for hypereutectoid steel and dislocations contrast factors [20][21][22] of cubic crystals is available in literature.…”

Residual stresses evolution in Cu tubes, cold drawn with tilted dies – Neutron diffraction measurements and finite element simulation

“…Kriska et al [17] studied the evolution of RS (ex/in-situ) in a pearlitic steel in a cold drawing process using neutron and X-ray diffraction methods. They also studied RS in axial and transverse directions.…”

Residual Stress Analysis of Cold-drawn Pearlite Steel Wire Using White Synchrotron Radiation

“…For instance, Perez et al revealed the existence of residual stresses in the ferrite and cementite phases in steel wire using neutron and synchrotron radiation, 9) whereas Kriška et al focused on the evolution of macro and phase residual stresses in the ferrite phase. 10) However, few studies take the microstructure of the steel wires into account. Therefore, further studies are required to understand the details of residual stress states in cold-drawn pearlitic steel and the mechanisms of their generation.…”

“…Numerous studies have investigated residual stress in steel wires. [1][2][3][4][5][6][7][8][9][10][11] Although X-ray diffraction analysis is a common residual stress measurement method, it is limited to the measurement of stresses in the surface layers of the materials. In addition, the diffraction intensities from the cementite phase are insufficient in measurement using conventional X-ray sources.…”