Effects of Chemical Composition and Welding Process on Fracture Resistance of Type 347 Stainless Steel Weld

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The present study is a systematic investigation of the effects of microstructural changes, which have originated from the variations of filler metals and welding processes, on the J-R properties of simulated welds. Two AISI Type 347 weld metals, with different carbon contents, deposited by a GTAW process and two AISI Type 347 weld metals, with different carbon contents, deposited by a SMAW process were used in this study. The J-R tests were conducted at 316oC (600oF). The welds deposited by the GTAW process showed higher fracture resistances when compared to the welds deposited by the SMAW process. The J-R fracture resistance of the Type 347-GTAW processed weld with high carbon content was remarkably low when compared to the weld with low carbon. The J-R fracture resistances were decreased by coarse Nb(C, N) precipitates in the Type 347 weld deposited by the GTAW process. In the case of the SMAW welds, mainly coarse Ti-rich particles which had originated from the shielding of the welding rods deteriorated the fracture resistances.

Info:

Periodical:

Key Engineering Materials (Volumes 353-358)

Edited by:

Yu Zhou, Shan-Tung Tu and Xishan Xie

Pages:

1970-1973

DOI:

10.4028/www.scientific.net/KEM.353-358.1970

Citation:

J. H. Yoon et al., "Effects of Chemical Composition and Welding Process on Fracture Resistance of Type 347 Stainless Steel Weld", Key Engineering Materials, Vols. 353-358, pp. 1970-1973, 2007

Online since:

September 2007

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Price:

$35.00

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