The Effect of Heat Input on the Mechanical and Corrosion Properties of AISI 304 Electric ARC Weldments
Journal Title: Current Journal of Applied Science and Technology - Year 2017, Vol 20, Issue 5
Abstract
The mechanical and corrosion performances of austenitic stainless steels arc weld joints in service environments have been established to be influenced by the process parameters used in carrying out the welding process. In this work, the mechanical and corrosion resistance of electric arc weld joints of AISI 304 was investigated at varying process parameters. The welding was carried out using ESAB LHF 400 industrial welding machine. The microstructure of the weld joints was examined using optical microscopy and scanning electron microscopy. The micro-hardness and tensile strength of the welded samples were determined with the aid of Vickers micro-hardness tester and Instron universal testing machine respectively. The electrochemical corrosion of the samples in 3.5% NaCl solution was investigated using potentiostat. The results revealed that good quality arc weld joints are obtainable at a welding current range of 90-130 A and welding speed of 1.7-4.0 mm/s. The microstructure of the weld joints comprises austenite and delta-ferrite phases. The hardness value of the weld joints (ranging within 234-275 HV0.1) was found to decrease with increase in the heat energy per unit length of weld. The optimal ultimate tensile stress of 550 MPa was obtained at a heat energy input of 9680 J/mm, whereas the value obtained for the as-received AISI 304 is 560 MPa. The corrosion performance of the arc weld joints is close to that of the as-received AISI 304. However, the corrosion performance of the weld joints decreased with increase in the heat energy input.
Authors and Affiliations
T. E. Abioye
Keywords
Related Articles
- EP ID EP318537
- DOI 10.9734/BJAST/2017/32846
- Views 90
- Downloads 0
Performance Evaluation of Sprinkler Irrigation System in Ganderbal District J&K State
Field experiments were carried at Krishi Vigyan Kendra (KVK), Shuhama (Jammu and Kashmir) to study the performance evaluation of sprinkler system. The climatic conditions of previous years were obtained and were taken in...
Dynamics of the Inter Tropical Front and Rainy Season Onset in Benin
Rainfall onset in Benin is one of the major problems that the farmers face. This climatic factor is of a great importance for the productivity in Benin. In this work, based on two criteria, we elaborated a new criterion,...
Performance Evaluation of a Rainwater Harvesting System: A Case Study of University College Hospital, Ibadan City, Nigeria
Provision of water supply to meet urban demands is increasingly facing complex challenges due to water scarcity, population growth, ageing infrastructure, variability and uncertainty under climate change. Rainwater harve...
Peasant Farmers’ Adaptation Strategies to Coping with Climate Change in Jibia Northwest Katsina, Nigeria
The aim of this study is to identify the adaptation strategies developed by local peasant farmers to reduce negative impacts of climate change in Jibia, Northwest Katsina, Nigeria. Primary data were obtained from field s...
Phytochemical Investigation, in vitro Antioxidant and Anti-inflammatory Evaluation of Leaf Extracts of Solanum erianthum
Aims: Solanum erianthum has been used in the treatment of various diseases by traditional medical practitioners in south-western Nigeria. The leaf extracts of the plant have been shown to possess antimicrobial activities...