Determination of Optimum Post Weld Heat Treatment Processes on the Microstructure and Mechanical Properties of IS2062 Steel Weldments

Kumar Pn,Chennaiah Mb

doi:10.4172/2169-0022.1000230

Abstract

This study investigates the effect of post heat treatment on the microstructure and mechanical properties of IS2062 steels. Similar metal joints of IS2062 weldments are prepared by using MIG welding process. This melting is occurring at edges of the plates because of sufficient amount of heat energy is passing over the plate per unit time and density of energy is supplied to the wire. In this connection, heating and cooling of weldment some of the disturbances in metallurgical and mechanical point of view. To overcome we will choose suitable post weld heat treatment to avoid the disturbances and improve industrial requirement irrespective of the mechanical, microstructure of the weldment. The objective is to determine the optimum post weld heat treatment method for the IS2062 steel. After welding, the effects of post weld heat treatment on weld metal microstructure and mechanical properties including weldment tensile strength, impact and hardness over the room temperature range 32°C are investigated. In particular this study the effect of these properties to understand estimate heat treatments on the tensile impact, Hardness materials are considered as weldments before heat treatment and after post weld heat treatment.

Highlights

In any welding technique can be heating and cooling of the parent materials, strength setup of the entire materials can be obtained overmatched depending upon the temperature or heat energy is transferred in to the parent materials
As we have considered 10 mm thickness plate, before doing Welding we have to preheat (100°-150°C) the materials in order to prevent the moisture in the metal, distortion control and for cracks rectification. 16 samples are prepared by using welding parameters of current 160-180 amp, voltage 26-30 V, welding speed 3.3-3.5 mm/sec. 4 samples are before post weld heat treatment and remaining after post weld heat treatment processes is conducting as
Hardness was found to be a reliable method of estimating the yield and tensile strength of the different zones of the weldment before post weld heat treatment and after post weld heat treatment

Summary

Introduction

In any welding technique can be heating and cooling of the parent materials, strength setup of the entire materials can be obtained overmatched depending upon the temperature or heat energy is transferred in to the parent materials. Researcher chooses the post weld heat treatment processes to improve the tensile, impact and hardness of the parent metals in order to choose optimal post weld heat treatment processes increasing the mechanical and metallurgical results, which derive the industrial requirement and literature [1,2]. Both welded samples were cut according to the ASTM E8M-04 standard to obtain the tensile strength and the elongation of the joints.

Results

Conclusion