Characterization of microstructure, chemical composition, and toughness of a multipass welded joint of austenitic stainless steel AISI316L

被引：27

作者：

Tumer, Mustafa ^{[1
]}

Yilmaz, Ramazan ^{[2
]}

机构：

[1] Kocaeli Univ, Dept Welding Technol, Uzunciftlik Nuh Cimento Vocat High Sch, Kocaeli, Turkey

[2] Sakarya Univ, Fac Technol, Dept Met & Mat Engn, Esentepe, Sakarya, Turkey

来源：

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2016年 / 87卷 / 9-12期

关键词：

Flux cored arc welding; Stainless steel; delta-ferrite; Shielding gas; Inclusion; CR/NI EQUIVALENT RATIO; FLUX-CORED WIRES; SHIELDING-GAS; MECHANICAL-PROPERTIES; DUPLEX; WELDMENTS; RESISTANCE; METALS; FCAW;

D O I：

10.1007/s00170-016-8614-4

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this study, AISI 316 types of austenitic stainless steels were welded by FCAW (flux-cored arc welding) using E316LT1-1/4 flux-cored wire under various shielding gas mixtures containing CO2 at different ratios. Effects of mixed ratio of Ar and CO2 in the in the shielding gas on the microstructure, impact toughness, and microhardness of welded materials were studied. Stereo optical microscopy, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), transmission electron microscope (TEM), and TEM/mapping analysis techniques were used for microstructural characterizations. The impact toughness values of the weldments were decreased as a result of the formation and growth of inclusions in the microstructure due to the increases amount of CO2 in the shielding gas. The hardness values and delta-ferrite amount in the weld metal were affected by depending on of the shielding gas mixtures.

引用

页码：2567 / 2579

页数：13

共 32 条

[1] FCAW process to avoid the use of post weld heat treatment [J].

Aloraier, A. ;

Ibrahim, R. ;

Thomson, P. .

INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING, 2006, 83 (05) :394-398

[2] A study on influence of shielding gas composition on toughness of flux-cored arc weld of modified 9Cr-1Mo (P91) steel [J].

Arivazhagan, B. ;

Sundaresan, S. ;

Kamaraj, M. .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2009, 209 (12-13) :5245-5253

[3] Effect of shielding gas on welding performance and properties of duplex and superduplex stainless steel welds [J].

Bermejo, M. A. Valiente ;

Karlsson, L. ;

Svensson, L-E. ;

Hurtig, K. ;

Rasmuson, H. ;

Frodigh, M. ;

Bengtsson, P. .

WELDING IN THE WORLD, 2015, 59 (02) :239-249

[4]

Cleiton CS, 2009, MATER CHARACT, V60, P346

[5]

Dieter G. E., 1988, MECH METALLURGY, P476

[6]

Engindeniz E, 2010, 63 ANN ASS INT C INT, P18

[7]

Genckan D, 2009, MUHENDIS MAKINE, V50, P74

[8] Fusion zone purification of metal containing oxide inclusions via laser welding [J].

Hu, ML ;

Yang, TC ;

Wu, HC ;

Chen, C .

JOURNAL OF MATERIALS SCIENCE, 2005, 40 (15) :4125-4127

[9] Effect of Cr/Ni equivalent ratio on ductility-dip cracking in AISI 316L weld metals [J].

Jang, A. Y. ;

Lee, D. J. ;

Lee, S. H. ;

Shim, J. H. ;

Kang, S. W. ;

Lee, H. W. .

MATERIALS & DESIGN, 2011, 32 (01) :371-376

[10] An investigation of micro structure/property relationships in dissimilar welds between martensitic and austenitic stainless steels [J].

Kaçar, R ;

Baylan, O .

MATERIALS & DESIGN, 2004, 25 (04) :317-329

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