Effect of Ar-N2 Mixed Gas on Morphology and Microstructure of Type 316L Stainless Steel TIG Weld Metal

Abstract:

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The aim of the present work was to investigate the effects of specific nitrogen gas additions to argon shielding gas on morphology and microstructure of austenitic stainless steel TIG welds. An autogenous TIG welding process was applied on type 316L stainless steel to produce a bead-on-plate weld. The ferrite content of weld metal was measured using a Feritscope. The results indicated that the arc voltage increase as the amount of nitrogen gas added to the argon atmosphere increases. The retained ferrite content of type 316L stainless steel TIG weld metal decreased rapidly as nitrogen gas addition to the argon shielding gas was increased.

Info:

Periodical:

Advanced Materials Research (Volumes 295-297)

Edited by:

Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu

Pages:

1919-1924

DOI:

10.4028/www.scientific.net/AMR.295-297.1919

Citation:

K. H. Tseng and K. C. Hsien, "Effect of Ar-N2 Mixed Gas on Morphology and Microstructure of Type 316L Stainless Steel TIG Weld Metal", Advanced Materials Research, Vols. 295-297, pp. 1919-1924, 2011

Online since:

July 2011

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Price:

$35.00

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