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In this study, effect of carbide precipitation analyzed on the metallurgical and tensile properties of gas tungsten arc welded austenic stainless steels. The yield strength, ultimate tensile strength, percentage elongation and metallographic studies are done to evaluate the effect of carbide precipitation. The multi-pass GTAW process is used for the fabrication single V and double V welded butt joint of the stainless steel plates. The tensile shows done on the single V and double V welded joints carbide precipitation does not affect the yield strength and UTS significantly but ductility suffer worse from 12 to 20 % due to the heavy carbide precipitation . The tensile studies also reveal that the Double V weld joint showed better tensile properties as compared to the single V welded butt joints. The micro-structural studies showed that weld metal showed dendritic structure and as the post weld thermal aging was induced the extent of carbide precipitation increases. The micro-hardness studies concluded that BM showed the highest micro-hardness and HAZ showed the least, as the post welded micro-hardness values showed decreasing trend due to the carbide precipitation revealed in the micro-structure.
Ranjit Singh, Bikram Jit Singh, Manpreet Singh
Dr. Ranjit Singh is working as an Associate Professor in Mechanical Engineering and has completed his PhD from Desh Bhagat University, Mandigobind Garh, Punjab. He got his M.Tech degree from Manav Bharti University, Solan, HP in May 2013 and secured his B.Tech degree in Welding Engineering & Technology, from Indian Institute of Welding, Kolkatta, WB, in year 2005. He served SLIET Sangrur, Kalpi Institute of Techology and Delhi Technical Campus, Bahadurgarh from time to time. He wrote many Research Papers on Welding issues in prominent International Journals.
Dr. Bikram Jit Singh is working as a Professor in Mechanical Engineering Department at Maharishi Markandeshwar Deemed to be University, Mullana, Ambala, India. He is a Black Belt in Six Sigma. He had done Masters of Engineering with distinction in Industrial Engineering from TIET Patiala and PhD from NIT Kurukshetra Haryana. He had a three year Professional Experience as a Manager in Light Alloy Foundry at Goetze India Limited (A German Multi-National Company at Bahadurgarh, India).
Er. Manpreet Singh has completed his B.Tech from PTU Jalandhar and M.Tech from UCOE Patiala in the stream of Mechanical Engineering. Presently he is working with Hans Agro Industries as a manager and managing front end as well as backend operations in production, sales and purchase.
