TY - JOUR
T1 - Brazing development and interfacial metallurgy study of tungsten and copper joints with eutectic gold copper brazing alloy
AU - Easton, David
AU - Zhang, Yuxuan
AU - Wood, James
AU - Galloway, Alexander
AU - Robbie, Mikael Olsson
AU - Hardie, Christopher
PY - 2015/10
Y1 - 2015/10
N2 - Current proposals for the divertor component of a thermonuclear fusion reactor include tungsten and copper as potentially suitable materials. This paper presents the procedures developed for the successful brazing of tungsten to oxygen free high conductivity (OFHC) copper using a fusion appropriate gold based brazing alloy, Orobraze 890 (Au80Cu20). The objectives were to develop preparation techniques and brazing procedures in order to produce a repeatable, defect free butt joint for tungsten to copper. Multiple brazing methods were utilised and brazing parameters altered to achieve the best joint possible. Successful and unsuccessful brazed specimens were sectioned and analysed using optical and scanning electron microscopy, EDX analysis and ultrasonic evaluation. It has been determined that brazing with Au80Cu20 has the potential to be a suitable joining method for a tungsten to copper joint.
AB - Current proposals for the divertor component of a thermonuclear fusion reactor include tungsten and copper as potentially suitable materials. This paper presents the procedures developed for the successful brazing of tungsten to oxygen free high conductivity (OFHC) copper using a fusion appropriate gold based brazing alloy, Orobraze 890 (Au80Cu20). The objectives were to develop preparation techniques and brazing procedures in order to produce a repeatable, defect free butt joint for tungsten to copper. Multiple brazing methods were utilised and brazing parameters altered to achieve the best joint possible. Successful and unsuccessful brazed specimens were sectioned and analysed using optical and scanning electron microscopy, EDX analysis and ultrasonic evaluation. It has been determined that brazing with Au80Cu20 has the potential to be a suitable joining method for a tungsten to copper joint.
KW - brazing
KW - characterisation
KW - copper
KW - dissimilar
KW - material
KW - tungsten
UR - http://www.scopus.com/inward/record.url?scp=84931074711&partnerID=8YFLogxK
UR - http://www.sciencedirect.com/science/article/pii/S0920379615003312
U2 - 10.1016/j.fusengdes.2015.05.033
DO - 10.1016/j.fusengdes.2015.05.033
M3 - Article
VL - 98-99
SP - 1956
EP - 1959
JO - Fusion Engineering and Design
JF - Fusion Engineering and Design
SN - 0920-3796
T2 - 28th Symposium on Fusion Technology (SOFT 2014)
Y2 - 29 September 2014 through 3 October 2014
ER -