... because its use and necessity are limited. In the case of HY-80 steel, distortion is different from general steel because of volume expansion occurred by martensite phase transformation during cooling stage. In order to establish the predictive equation of welding distortion at the HY-80 weldment, high...

... hydride landau potential grain boundary thickness simulation hydride formation phase transformation hydride phase evolution fraction nucleation energy barrier precipitation pvt measurement crack tip region crack tip hydraulic fracturing hydride region free energy interface...

... microstructure welding simulation corrosion inhibition material 49491 stress corrosion production chemistry peak temperature phase transformation transformation simulation h2s management material 49490 grain heat thermal cycle oilfield chemistry hardness corrosion management...

... model has been used to simulate welding of X70 pipe. Welding simulations were performed in the WeldsimS FE code, which models the thermo-mechanical process from viscoplastic strains, including strains due to phase transformations. A one-pass hybrid laser-arc welding process and a four-pass Gas Metal Arc...

... under electron irradiation and Pt-silicide was the same one formed by thermal process. Second, - phase transformation took placed in - alumina when it was subjected to electron irradiation. And finally, one or two-dimensional tungsten nanowire networks were fabricated on a tungsten film by electron...

...-affected zone) through microstructural control. Therefore, understanding the behaviour of phase transformation in the welding process is essential. As these phenomena occur during rapid heating and cooling cycles (several hundred degrees/second) at high temperature, it is not easy to observe the phase...

... ABSTRACT A reversible phase transformation process to convert bulk polycrystalline Y 2 O 3 into the nanocrystalline state is described. It involves a forward phase transformation from cubic-to-monoclinic under a high pressure followed by a backward phase transformation from monoclinic...

... expansion (CTE) of 9% Ni steel with the fraction of martensite. With CTE obtained, an uncoupled thermal-mechanical finite element (FE) model was developed to evaluate the effect of solid-state phase transformation on welding distortion and residual stress of the weldment and verified by comparing...

... demonstrate that the austenite to martensite phase transformation on cooling has remarkable effects on the final tensile residual stress level in welding of super 13% Cr steels. Specimens that go through full austenitisation on heating will have very low residual stresses after cooling due to the lattice atom...

...An Improved Inherent Strain Analysis for the Prediction of Plate Deformations Induced by Line Heating Considering Phase Transformation of Steel Chang Doo Jang, Yun Sok Ha, Dae Eun Ko Dept. of Naval Architecture and Ocean Engineering, Seoul National University Seoul, Korea ABSTRACT The inherent...

... characterised by the peak temperature T p and cooling time ∆t 8/5 of the thermal cycle. thermal cycle interaction plasticity metals & mining satoh test residual stress subroutine transformation plasticity heating transformation reservoir surveillance welding phase transformation...

... artificial intelligence welding peak temperature heating residual stress level phase transformation qt steel residual stress mpa thermocouple machine learning strength transformation specimen thermal stress Proceedings of the Ninth (1999) International Offshore and Polar Engineering...

..., 120 and 150 kPa. The typical effective stress paths during static loading isotropically consolidated is shown in Fig. 1. It was found that there are two different lines, one referred to as the failure line and the other "line of phase transformation". The angle of failure is greater than the angle...