Numerical and experimental investigation of quench process
- Middle East Technical Univ., Ankara (Turkey)
Numerical and experimental studies have been carried out to investigate the evolution of residual stresses in quenched components induced by temperature gradient and phase transformations. In the numerical analysis, a finite element model is implemented for predicting the temperature field, phase changes with their associated internal stresses in axisymmetrical steel components. The model is verified by several comparisons with other known numerical results. Case studies are performed to investigate the effects of the quench bath temperature and the specimen geometry. Specimen geometry has been analyzed by introducing a hole in a cylinder and varying hole diameter and its eccentricity. Experiments include microstructural examination and X-ray diffraction measurements of surface residual stresses. QUENCHING is a common manufacturing process to produce parts with reliable service properties. Long parts with small cross sections, those with nonsymmetrical shapes, and those with holes, deep keyways or grooves are difficult to quench without distortion or cracking. Especially in quenching of construction steels, the quench cracking risks and great deformation is often encountered. On the other hand, most serious residual stresses are from the differential cooling and the volume increase due to the phase transformations.
- OSTI ID:
- 484276
- Report Number(s):
- CONF-961140-; TRN: 97:000168-0038
- Resource Relation:
- Conference: 2. international conference on quenching and the control of distortion, Cleveland, OH (United States), 4-7 Nov 1996; Other Information: PBD: 1996; Related Information: Is Part Of 2nd International conference on quenching and the control of distortion; Totten, G.E.; Howes, M.A.H.; Sjoestrom, S.J.; Funatani, Kiyoshi [eds.]; PB: 652 p.
- Country of Publication:
- United States
- Language:
- English
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