منابع مشابه
I / RESIDUAL STRESS DISTRIBUTION IN FeAl WELD OVERLAY ON STEEL
Neutron diffraction was used to measure the residual stress distribution in an FeAl weld overlay on steel. It was found that the residual stresses accumulated during welding were essentially removed by the post-weld heat treatment that was applied to the specimen; most residual stresses in the specimen developed during cooling following the post-weld heat treatment. The experimental data were c...
متن کاملEffect of Residual Stress on Failure of Tube-to-tubesheet Weld in Heat Exchangers
In a shell and tube heat exchanger, the failure of tube-to-tubesheet welds results in high-pressure water jet which erodes the refractory in front of the tubesheet. Finite element method was employed to simulate the welding process and post weld heat treatment (PWHT) to find the factors affecting the failure in tube-to-tubesheet weldments. Residual stresses in two different geometries of tube-t...
متن کاملAnalysis of Spot Weld Joints by Ultrasonic Inspection, Fem and Residual Stress Measurements
The present work seeks to determine the parameters for approval, through ultrasonic techniques, of spot welded joints of low carbon steel sheets. For such experience the mechanical behavior of a spotwelded joint was characterized under fatigue, in load cycles ranging from zero to 14 kN, on sheets of 1.5 mm thickness, joined by three spot welds of 7.5 mm of medium diameter, being the distance am...
متن کاملThe prediction of residual stress and its influence on the mechanical properties of weld joint
A three-dimensional metallo-thermo-mechanical analysis of bead on plate welding is performed in this work. This coupled model enables to capture the microstructural development and temperature history at local region. As a result, the residual stress is evaluated based on the temperature-dependent mechanical properties computed by the mixture of individual phase. Isotropic hardening is assumed ...
متن کاملMicrostructure and Residual Stress Formation in an Aa6040 to Az31b Friction Stir Weld
The microstructure and residual stresses of an AA6040 Al to AZ31B Mg friction stir weld are studied using scanning electron microscopy and X-ray diffraction. The complex material flow promoted by the friction stir welding process results in a fine grained structure in the stir zone of both materials due to dynamic/recovery recrystallization. The interface between the materials is characterized ...
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ژورنال
عنوان ژورنال: JOURNAL OF THE JAPAN WELDING SOCIETY
سال: 2009
ISSN: 0021-4787,1883-7204
DOI: 10.2207/jjws.78.139