Investigation of internal stresses and microstructural evolution in quenched steel components by finite element analysis

Gür, Cemil Hakan
Ozturk, T
Schuler, W
Optimal quench uniformity is essential for the minimization of the potential for cracking, distortion, residual stress. Computer simulation of quench processes provides valuable information to avoid quench cracking, to control distortion and to have optimal metallurgical and mechanical properties. In this study, internal and residual stress states together with microstructural evolution in quenched C60 steel cylinders are analyzed numerically. In the numerical analysis, finite element method is applied and both temperature gradients and phase transformations are considered.


Analysis of wrinkling in deep drawing processes
Dal, Saniye Rabia; Darendeliler, Haluk; Department of Mechanical Engineering (2019)
Wrinkling, observed due to compressive instability, is one of the main failure modes in deep drawing processes. The prediction and prevention of wrinkles are critical for production of stamping parts which require good surface quality. In the current work, the occurrence of wrinkling in square and cylindrical cup deep drawing processes are investigated considering various constitutive models; formed by using CPB06ex2, Hill’48, BBC2008-8p, BBC2008-16p, and von Mises yield criterion with isotropic, kinematic ...
Investigation of the layering mechanism of agglomerate growth during drum pelletization
Sastry, KVS; Dontula, P; Hoşten, Çetin (Elsevier BV, 2003-02-19)
Conventional drum pelletization circuits exhibit undesirable surging behavior that is known to result from uncontrolled occurrence of the mechanisms of nucleation, coalescence and layering. This study was undertaken to investigate the mechanism of pellet growth by layering. Several laboratory experiments were carried out to delineate the effect of feed moisture content and feed quantity. This paper presents an analysis of the experimental results and a simple model to describe the layering process. (C) 2002...
Modelling of asymmetric membrane formation
Mchugh, A.j.; Yılmaz, Levent (American Chemical Society; 1986-09-01)
Asymmetric membranes are generally prepared by the phase inversion techniques, the principal steps of which involve casting a thin film of a homogeneous polymer solution onto a suitable substrate, followed by quenching in a nonsolvent bath to precipitate the membrane film. Since most studies of the process has been concerned with the development of specific preparation recipies, explanations of structure formation have generally been ad-hoc and qualitative. This paper presents the results of recent modellin...
Investigating the Relationship between Shot-Peening Severity and Fatigue Life of AISI 4140 Steel by Magnetic Barkhausen Method
Çalışkan, Salim; Gür, Cemil Hakan (null; 2018-06-15)
Shot peening process results in compressive residual stresses on the surface which improves the fatigue performance of the components. Fatigue life of several aircraft parts is improved by shot peening. Thus, development of easy, rapid and reliable non-destructive methods for estimation of residual stress, and thus fatigue performance of the components will be very useful for aircraft industry. Recently the magnetic Barkhausen noise (MBN) method has gained importance for non-destructive characterization of ...
Study of the structure of grafted copolymers on the base of butyl rubber and superhigh-molecular polyethylene
Aliguliev, R.M.; Gasanov, Kh.A.; Mehrabov, Amdulla (1992-04-01)
The specific features of structural changes of compositions of butyl rubber with superhighmolecular polyethylene produced by ultrasonic action were studied in the wide range of component ratios. The growth of interphase structures confirmed by IR- and NMR- spectroscopy, radiothermoluminescence, DTA and DSC methods was shown to improve the compatibility of these compositions. The presented data suggest that the formation of graft-copolymers on the base of PE and butyl rubber is highly affected by ultrasonic ...
Citation Formats
C. H. Gür, T. Ozturk, and W. Schuler, “Investigation of internal stresses and microstructural evolution in quenched steel components by finite element analysis,” 1997, Accessed: 00, 2020. [Online]. Available: