Finite-Element Thermal Analysis and Grain Growth Behavior of HAZ on Argon Tungsten-Arc Welding of 443 Stainless SteelReport as inadecuate




Finite-Element Thermal Analysis and Grain Growth Behavior of HAZ on Argon Tungsten-Arc Welding of 443 Stainless Steel - Download this document for free, or read online. Document in PDF available to download.

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College of Material Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China

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Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China





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Author to whom correspondence should be addressed.



Academic Editor: Hugo F. Lopez

Abstract This paper presents a numerical and infrared experimental study of thermal and grain growth behavior during argon tungsten arc welding of 443 stainless steel. A 3D finite element model was proposed to simulate the welding process. The simulations were carried out via the Ansys Parametric Design Language APDL available in the finite-element code, ANSYS. To validate the simulation accuracy, a series of experiments using a fully-automated welding process was conducted. The results of the numerical analysis show that the simulation weld bead size and the experiment results have good agreement. The grain growth in the heat-affected zone of 443 stainless steel is influenced via three factors: 1 the thermal cycle experienced; 2 grain boundary migration; and 3 particle precipitation. Grain boundary migration is the main factor. The modified coefficient k of the grain growth index is calculated. The value is 1.16. Moreover, the microhardness of the weld bead softened slightly compared to the base metal. View Full-Text

Keywords: 443 stainless steel; infrared; pool geometry; grain growth 443 stainless steel; infrared; pool geometry; grain growth





Author: Yichen Wang 1, Min Ding 1,2,* , Yong Zheng 1, Shisen Liu 1, Wenxian Wang 1,2 and Zhaohan Zhang 1

Source: http://mdpi.com/



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