Influence of the Chemical Elements of Welding Materials on Mechanical Properties

Li Ge Tong; Hong Sheng Ding; Li Wang; Shi Wu Bai; Yong Li Sui; Lu Bai

doi:10.4028/www.scientific.net/AMR.562-564.719

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 562-564Influence of the Chemical Elements of Welding...

Influence of the Chemical Elements of Welding Materials on Mechanical Properties

Abstract:

Based on artificial neural network (ANN), a mechanical properties prediction model for automatic welding is built. The input parameters of the model consist of the chemical elements and the diameter of the welding material and the outputs is the mechanical properties, i.e. yield strength, tensile strength and elongation. The ANNs model is established by Visual C++ based on improved back-propagation (BP) arithmetic with momentum coefficients, in which the sample data used are from automatic welding materials for X70 pipeline steel. The influence of chemical compositions, such as C, S, P, Si, Mn, Cu, Ti and Ni on the mechanical properties of welding materials are analyzed. The results show that the influence of metallic elements is significantly greater than the nonmetallic. For nonmetallic elements, not all the value of mechanical properties decreases with the increase of the content. The influence of C is critical, followed by P and S. For metallic elements, the influence of different elements on mechanical properties, such as the yield strength, the tensile strength, the elongation and the average Charpy impact toughness, is difference.