Dissimilar Electron Beam Welds of Nickel Base Alloy A625 with a 9% Cr-Steel for High Temperature Applications

Christopher Alois Wiednig; Ernst Plesiutschnig; Stefan Mitsche; Coline Beal; Norbert Enzinger; Claus Lochbichler

doi:10.4028/www.scientific.net/MSF.879.2100

Dissimilar Electron Beam Welds of Nickel Base Alloy A625 with a 9% Cr-Steel for High Temperature Applications

Christopher Alois Wiednig, Ernst Plesiutschnig, Stefan Mitsche, Coline Beal, Norbert Enzinger, Claus Lochbichler

Research output: Contribution to journal › Article › peer-review

Abstract

Welding of thick walled components with an electron beam has great potential due to the minimal heat input, high reproducibility and cost-efficiency. In the present work electron beam welding was used to weld 50mm thick plates of cast Ni-base alloy A625 to ferritic/martensitic 9% Cr steel plates. The welds were creep exposed at 625°C with stress levels ranging between 156 - 100MPa. Microstructure analysis of the weld-seam and the heat affected zone was carried out using metallography and scanning electron microscopy employing the EBSD technique to determine the location of the creep rupture. Creep fracture is located in the heat affected zone of the 9% Cr steel. Electron beam welded samples were compared to shield metal arc welded samples regarding
welding and creep resistance. The performance and related microstructure properties of the electron beam welded specimen are more than competitive to conventional metal-arc-welding procedures.

Original language	English
Pages (from-to)	2100-2106
Journal	Materials Science Forum
Volume	879
DOIs	https://doi.org/10.4028/www.scientific.net/MSF.879.2100
Publication status	Published - 2 Nov 2016

Fields of Expertise

Mobility & Production

Access to Document

10.4028/www.scientific.net/MSF.879.2100

Cite this

@article{64059913949942548b9cbef906cdfc28,

title = "Dissimilar Electron Beam Welds of Nickel Base Alloy A625 with a 9% Cr-Steel for High Temperature Applications",

abstract = "Welding of thick walled components with an electron beam has great potential due to the minimal heat input, high reproducibility and cost-efficiency. In the present work electron beam welding was used to weld 50mm thick plates of cast Ni-base alloy A625 to ferritic/martensitic 9% Cr steel plates. The welds were creep exposed at 625°C with stress levels ranging between 156 - 100MPa. Microstructure analysis of the weld-seam and the heat affected zone was carried out using metallography and scanning electron microscopy employing the EBSD technique to determine the location of the creep rupture. Creep fracture is located in the heat affected zone of the 9% Cr steel. Electron beam welded samples were compared to shield metal arc welded samples regardingwelding and creep resistance. The performance and related microstructure properties of the electron beam welded specimen are more than competitive to conventional metal-arc-welding procedures. ",

keywords = "electron beam welding, Nickel base alloy, ferrite, Martensitic steel, creep",

author = "Wiednig, {Christopher Alois} and Ernst Plesiutschnig and Stefan Mitsche and Coline Beal and Norbert Enzinger and Claus Lochbichler",

year = "2016",

month = nov,

day = "2",

doi = "10.4028/www.scientific.net/MSF.879.2100",

language = "English",

volume = "879",

pages = "2100--2106",

journal = "Materials Science Forum",

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TY - JOUR

T1 - Dissimilar Electron Beam Welds of Nickel Base Alloy A625 with a 9% Cr-Steel for High Temperature Applications

AU - Wiednig, Christopher Alois

AU - Plesiutschnig, Ernst

AU - Mitsche, Stefan

AU - Beal, Coline

AU - Enzinger, Norbert

AU - Lochbichler, Claus

PY - 2016/11/2

Y1 - 2016/11/2

N2 - Welding of thick walled components with an electron beam has great potential due to the minimal heat input, high reproducibility and cost-efficiency. In the present work electron beam welding was used to weld 50mm thick plates of cast Ni-base alloy A625 to ferritic/martensitic 9% Cr steel plates. The welds were creep exposed at 625°C with stress levels ranging between 156 - 100MPa. Microstructure analysis of the weld-seam and the heat affected zone was carried out using metallography and scanning electron microscopy employing the EBSD technique to determine the location of the creep rupture. Creep fracture is located in the heat affected zone of the 9% Cr steel. Electron beam welded samples were compared to shield metal arc welded samples regardingwelding and creep resistance. The performance and related microstructure properties of the electron beam welded specimen are more than competitive to conventional metal-arc-welding procedures.

AB - Welding of thick walled components with an electron beam has great potential due to the minimal heat input, high reproducibility and cost-efficiency. In the present work electron beam welding was used to weld 50mm thick plates of cast Ni-base alloy A625 to ferritic/martensitic 9% Cr steel plates. The welds were creep exposed at 625°C with stress levels ranging between 156 - 100MPa. Microstructure analysis of the weld-seam and the heat affected zone was carried out using metallography and scanning electron microscopy employing the EBSD technique to determine the location of the creep rupture. Creep fracture is located in the heat affected zone of the 9% Cr steel. Electron beam welded samples were compared to shield metal arc welded samples regardingwelding and creep resistance. The performance and related microstructure properties of the electron beam welded specimen are more than competitive to conventional metal-arc-welding procedures.

KW - electron beam welding

KW - Nickel base alloy

KW - ferrite

KW - Martensitic steel

KW - creep

U2 - 10.4028/www.scientific.net/MSF.879.2100

DO - 10.4028/www.scientific.net/MSF.879.2100

M3 - Article

SN - 0255-5476

VL - 879

SP - 2100

EP - 2106

JO - Materials Science Forum

JF - Materials Science Forum

ER -