Shielding gas brazing of martensitic stainless steel with copper free silver based filler metals

Leinenbach, Christian; Gelder, N.; Bissig, V.; Gattiker, F.; Klotz, Ulrich

doi:10.1179/174329307x249315

Cited by 8 publications

(5 citation statements)

References 19 publications

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“…To provide structural reliability for brazed components in service, their behavior under cyclic loading needs to be considered, too. The fatigue behavior of brazed components is much more complex in comparison with bulk materials and has hardly been considered in the literature yet ( Ref 20,21). A number of studies on the fatigue crack propagation behavior at or near interfaces in constrained layers (e.g., in adhesively bonded joints, metal-ceramic joints, or multi-layered materials) have been published in the past two decades (e.g., .…”

Section: Introductionmentioning

confidence: 99%

Fatigue Assessment of Defect-Free and Defect-Containing Brazed Steel Joints

Leinenbach

Köster

Schindler

2012

J. of Materi Eng and Perform

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This work aims at the development of lifetime estimation procedures for defect-free and defect-containing brazed joints. Preliminary investigations were performed to measure the influence of specimen geometry on the joint strength. To estimate the influence of defects on the fatigue lifetime, defect-free specimens were compared with specimens containing defects. The experiments show that defect-containing specimens provide considerably lower joint strengths than defect-free specimens. The decrease of the fatigue strength with increasing defect size can be shown, but the direct comparison of different defects is not possible with S-N-curves. Based on the experimental results and on theoretical investigations, a procedure was developed to estimate the lifetime of defect-free and defect-containing brazed joints based on the stress intensity caused by a defect.

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Section: Introductionmentioning

confidence: 99%

Fatigue Assessment of Defect-Free and Defect-Containing Brazed Steel Joints

Leinenbach

Köster

Schindler

2012

J. of Materi Eng and Perform

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“…At present, copper-based or copper-contained brazing filler is the main commercial brazing material employed to attach steel material [7,8]. However, liquid copper and solid austenitic steel are well known as an embrittlement couple, which can cause liquid metal-induced embrittlement (LMIE) of austenitic steel when there is an intimate contact between liquid copper and austenitic steel under certain stress concentration at a high temperature, and then the intergranular copper penetrating cracks are formed [9][10][11][12].…”

Section: Please Scroll Down For Articlementioning

confidence: 99%

Effects of Brazing Filler and Method on ITER Thermal Anchor Joint Crack

Chen¹,

Wu²,

Pei³

et al. 2014

Materials and Manufacturing Processes

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Thermal anchor, one of the key components to keep temperature balance of gravity magnet support, should be avoided welding defects in its welding joints, which endure large forces when the international thermonuclear experimental reactor (ITER) fusion device is operating. The influences of brazing fillers and brazing methods on the cracks in joints of thermal anchor were investigated by microstructure analysis. The results have shown that the copper penetrating cracks were observed in the heat-affected zone (HAZ) of tungsten inert gas (TIG) arc brazing joints welded by CuSi3, CuSi3Mn, and Ag45CuSnNi brazing fillers, which are chiefly responsible for the diffusion and penetration of copper, derived from molten brazing filler metal into the 316L/316LN austenitic grain boundaries leading to embrittlement. The intimate contact between liquid copper and austenitic steel surface and the surface stress concentration of the austenitic steel are the main formative factors for the copper penetrating cracks. Adopting brazing fillers without containing copper or employing vacuum brazing can effectively avoid the copper penetrating cracks in the joints of ITER thermal anchor.

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“…84 Due to its anti-microbial function, nanosized silver is applied to textiles, [85][86][87] paints 81,88 or for several medical applications 89 such as implant coatings, 9 but the conductivity properties of nanosilver make it also interesting for electronic applications such as brazing and soldering. 90,91 Zinc oxide is promising e.g. because of its transparency and UV adsorption effect for paints 92 or impregnation or waterproofing sprays.…”

Section: Nanoparticles In Applicationsmentioning

confidence: 99%

Application of plasma spectrometry for the analysis of engineered nanoparticles in suspensions and products

Krystek

Ulrich

García³

et al. 2011

J. Anal. At. Spectrom.

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This article reviews the general characterization of nano-objects, especially engineered nanoparticles (ENPs) and discusses analytical techniques commonly used for their determination. The main aspect of this review covers the use of the inductively coupled plasma (ICP) technique for the determination of ENPs itself or when applied in a large variety of products including possible release during use. Beside various applications by direct determination or analysis after suitable digestion also novel approaches e.g. single particle introduction, and hyphenated techniques such as field flow fractionation (FFF) or size exclusion coupled to plasma spectrometry are discussed in detail. Finally, an overview of the stateof-the-art possibilities for quality control related to the atomic spectrometric analysis of nanoparticles is given.

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Shielding gas brazing of martensitic stainless steel with copper free silver based filler metals

Cited by 8 publications

References 19 publications

Fatigue Assessment of Defect-Free and Defect-Containing Brazed Steel Joints

Fatigue Assessment of Defect-Free and Defect-Containing Brazed Steel Joints

Effects of Brazing Filler and Method on ITER Thermal Anchor Joint Crack

Application of plasma spectrometry for the analysis of engineered nanoparticles in suspensions and products

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