Technical challenges in narrow-gap root pass welding during tandem and hybrid laser-arc welding of a thick martensitic stainless steel

F. Mirakhorli; X. Cao; X. T. Pham; P. Wanjara; J. L. Fihey

doi:10.4028/www.scientific.net/MSF.879.1305

Technical challenges in narrow-gap root pass welding during tandem and hybrid laser-arc welding of a thick martensitic stainless steel

F. Mirakhorli
, X. Cao
, X. T. Pham
, P. Wanjara
, J. L. Fihey

École de technologie supérieure
National Research Council of Canada

Research output: Contribution to Book/Report types › Contribution to conference proceedings › peer-review

9 Citations (Scopus)

Abstract

As part of a collaborative program to develop advanced manufacturing processes for next-generation hydraulic turbines, this study investigated the technological challenges for joining 25-mm thick martensitic stainless steel (MSS) plates using tandem and hybrid laser-arc welding. Although candidate materials for the intended application typically include wrought AISI 415 and cast CA6NM, a martensitic 410 stainless steel (SS) was especially selected in this study due to its greater crack sensitivity. A narrow-gap groove was designed to minimize the amount of 410NiMo filler metal required to fill the groove using a multi-pass single-sided welding technique. All the welding trials were performed using a 5.2 kW fiber laser. The root-pass quality was characterized in terms of weld bead geometry, defects and microstructure. The main technical challenges observed for the root pass were lack of penetration, lack of fusion and cracking, as detailed in this work.

Original language	English
Title of host publication	THERMEC 2016
Editors	Christof Sommitsch, Mihail Ionescu, Brajendra Mishra, Brajendra Mishra, Ernst Kozeschnik, T. Chandra
Publisher	Trans Tech Publications Ltd
Pages	1305-1310
Number of pages	6
ISBN (Print)	9783035711295
DOIs	https://doi.org/10.4028/www.scientific.net/MSF.879.1305
Publication status	Published - 2017
Event	9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016 - Graz, Austria Duration: 29 May 2016 → 3 Jun 2016

Publication series

Name	Materials Science Forum
Volume	879
ISSN (Print)	0255-5476
ISSN (Electronic)	1662-9752

Conference

Conference	9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016
Country/Territory	Austria
City	Graz
Period	29/05/16 → 3/06/16

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy
SDG 9 Industry, Innovation, and Infrastructure

!!!Keywords

Hybrid laser-arc welding
Martensitic stainless steel
Narrow-gap groove
Tandem laser-arc welding
Thick plate

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Mirakhorli, F., Cao, X., Pham, X. T., Wanjara, P., & Fihey, J. L. (2017). Technical challenges in narrow-gap root pass welding during tandem and hybrid laser-arc welding of a thick martensitic stainless steel. In C. Sommitsch, M. Ionescu, B. Mishra, B. Mishra, E. Kozeschnik, & T. Chandra (Eds.), THERMEC 2016 (pp. 1305-1310). (Materials Science Forum; Vol. 879). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.879.1305

Mirakhorli, F. ; Cao, X. ; Pham, X. T. et al. / Technical challenges in narrow-gap root pass welding during tandem and hybrid laser-arc welding of a thick martensitic stainless steel. THERMEC 2016. editor / Christof Sommitsch ; Mihail Ionescu ; Brajendra Mishra ; Brajendra Mishra ; Ernst Kozeschnik ; T. Chandra. Trans Tech Publications Ltd, 2017. pp. 1305-1310 (Materials Science Forum).

@inproceedings{617eee0dcd6e41ff92df25d563e63843,

title = "Technical challenges in narrow-gap root pass welding during tandem and hybrid laser-arc welding of a thick martensitic stainless steel",

abstract = "As part of a collaborative program to develop advanced manufacturing processes for next-generation hydraulic turbines, this study investigated the technological challenges for joining 25-mm thick martensitic stainless steel (MSS) plates using tandem and hybrid laser-arc welding. Although candidate materials for the intended application typically include wrought AISI 415 and cast CA6NM, a martensitic 410 stainless steel (SS) was especially selected in this study due to its greater crack sensitivity. A narrow-gap groove was designed to minimize the amount of 410NiMo filler metal required to fill the groove using a multi-pass single-sided welding technique. All the welding trials were performed using a 5.2 kW fiber laser. The root-pass quality was characterized in terms of weld bead geometry, defects and microstructure. The main technical challenges observed for the root pass were lack of penetration, lack of fusion and cracking, as detailed in this work.",

keywords = "Hybrid laser-arc welding, Martensitic stainless steel, Narrow-gap groove, Tandem laser-arc welding, Thick plate",

author = "F. Mirakhorli and X. Cao and Pham, \{X. T.\} and P. Wanjara and Fihey, \{J. L.\}",

note = "Publisher Copyright: {\textcopyright} 2017 Trans Tech Publications, Switzerland.; 9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016 ; Conference date: 29-05-2016 Through 03-06-2016",

year = "2017",

doi = "10.4028/www.scientific.net/MSF.879.1305",

language = "English",

isbn = "9783035711295",

series = "Materials Science Forum",

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Mirakhorli, F, Cao, X, Pham, XT, Wanjara, P & Fihey, JL 2017, Technical challenges in narrow-gap root pass welding during tandem and hybrid laser-arc welding of a thick martensitic stainless steel. in C Sommitsch, M Ionescu, B Mishra, B Mishra, E Kozeschnik & T Chandra (eds), THERMEC 2016. Materials Science Forum, vol. 879, Trans Tech Publications Ltd, pp. 1305-1310, 9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016, Graz, Austria, 29/05/16. https://doi.org/10.4028/www.scientific.net/MSF.879.1305

Technical challenges in narrow-gap root pass welding during tandem and hybrid laser-arc welding of a thick martensitic stainless steel. / Mirakhorli, F.; Cao, X.; Pham, X. T. et al.
THERMEC 2016. ed. / Christof Sommitsch; Mihail Ionescu; Brajendra Mishra; Brajendra Mishra; Ernst Kozeschnik; T. Chandra. Trans Tech Publications Ltd, 2017. p. 1305-1310 (Materials Science Forum; Vol. 879).

Research output: Contribution to Book/Report types › Contribution to conference proceedings › peer-review

TY - GEN

T1 - Technical challenges in narrow-gap root pass welding during tandem and hybrid laser-arc welding of a thick martensitic stainless steel

AU - Mirakhorli, F.

AU - Cao, X.

AU - Pham, X. T.

AU - Wanjara, P.

AU - Fihey, J. L.

PY - 2017

Y1 - 2017

N2 - As part of a collaborative program to develop advanced manufacturing processes for next-generation hydraulic turbines, this study investigated the technological challenges for joining 25-mm thick martensitic stainless steel (MSS) plates using tandem and hybrid laser-arc welding. Although candidate materials for the intended application typically include wrought AISI 415 and cast CA6NM, a martensitic 410 stainless steel (SS) was especially selected in this study due to its greater crack sensitivity. A narrow-gap groove was designed to minimize the amount of 410NiMo filler metal required to fill the groove using a multi-pass single-sided welding technique. All the welding trials were performed using a 5.2 kW fiber laser. The root-pass quality was characterized in terms of weld bead geometry, defects and microstructure. The main technical challenges observed for the root pass were lack of penetration, lack of fusion and cracking, as detailed in this work.

AB - As part of a collaborative program to develop advanced manufacturing processes for next-generation hydraulic turbines, this study investigated the technological challenges for joining 25-mm thick martensitic stainless steel (MSS) plates using tandem and hybrid laser-arc welding. Although candidate materials for the intended application typically include wrought AISI 415 and cast CA6NM, a martensitic 410 stainless steel (SS) was especially selected in this study due to its greater crack sensitivity. A narrow-gap groove was designed to minimize the amount of 410NiMo filler metal required to fill the groove using a multi-pass single-sided welding technique. All the welding trials were performed using a 5.2 kW fiber laser. The root-pass quality was characterized in terms of weld bead geometry, defects and microstructure. The main technical challenges observed for the root pass were lack of penetration, lack of fusion and cracking, as detailed in this work.

KW - Hybrid laser-arc welding

KW - Martensitic stainless steel

KW - Narrow-gap groove

KW - Tandem laser-arc welding

KW - Thick plate

UR - https://www.scopus.com/pages/publications/85000578198

U2 - 10.4028/www.scientific.net/MSF.879.1305

DO - 10.4028/www.scientific.net/MSF.879.1305

M3 - Contribution to conference proceedings

AN - SCOPUS:85000578198

SN - 9783035711295

T3 - Materials Science Forum

SP - 1305

EP - 1310

BT - THERMEC 2016

A2 - Sommitsch, Christof

A2 - Ionescu, Mihail

A2 - Mishra, Brajendra

A2 - Kozeschnik, Ernst

A2 - Chandra, T.

PB - Trans Tech Publications Ltd

T2 - 9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016

Y2 - 29 May 2016 through 3 June 2016

ER -

Mirakhorli F, Cao X, Pham XT, Wanjara P, Fihey JL. Technical challenges in narrow-gap root pass welding during tandem and hybrid laser-arc welding of a thick martensitic stainless steel. In Sommitsch C, Ionescu M, Mishra B, Mishra B, Kozeschnik E, Chandra T, editors, THERMEC 2016. Trans Tech Publications Ltd. 2017. p. 1305-1310. (Materials Science Forum). doi: 10.4028/www.scientific.net/MSF.879.1305

Technical challenges in narrow-gap root pass welding during tandem and hybrid laser-arc welding of a thick martensitic stainless steel

Abstract

Publication series

Conference

UN SDGs

!!!Keywords

Access to Document

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