Effect of Pulsed Magnetic Field on Quenched Heat Treatment of GCr15 Steel

Article Materials Science, Multidisciplinary

Effect of initial spheroidizing microstructure after quenching and tempering on wear and contact fatigue properties of GCr15 bearing steel

H. Y. Wu et al.

Summary: This study investigates the effects of different initial spheroidizing microstructures on the microstructure and mechanical properties of GCr15 bearing steel. The degree of spheroidization greatly influences the size and distribution of undissolved carbides in the quenching and tempering microstructure. The on-line low-temperature spheroidizing annealing process improves the hardness, wear resistance, and contact fatigue properties of the samples, while reducing the wear rate. Additionally, the contact fatigue life is significantly increased.

MATERIALS TODAY COMMUNICATIONS (2022)

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Article Chemistry, Physical

Magnetic induced re-dissolution and microstructure modifications on mechanical properties of Cr4Mo4V steel subjected to pulsed magnetic treatment

Chengkai Qian et al.

Summary: In this study, the mechanical properties of Cr4Mo4V steel subjected to pulsed magnetic treatment (PMT) at 0.8 T were enhanced by improving fracture toughness and fatigue fracture resistance. The changes in microstructure induced by the magnetic field were displayed using Kernel Averaged Misorientation (KAM) maps and Image Quality (IQ) maps constructed by Electron Backscatter Diffraction (EBSD) data along with X-ray diffraction (XRD). After PMT 0.8 T, the homogenization of microstructure and the increase in low-angle boundaries and coincidence site lattices (CSL) boundaries were found to contribute to the improvement of mechanical properties.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Nanoscience & Nanotechnology