Details
| Original language | English |
|---|---|
| Article number | 012034 |
| Number of pages | 6 |
| Journal | IOP Conference Series: Materials Science and Engineering |
| Volume | 480 |
| Issue number | 1 |
| Publication status | Published - 5 Mar 2019 |
| Event | 21st Chemnitz Seminar on Materials Engineering - Chemnitz, Germany Duration: 6 Mar 2019 → 7 Mar 2019 |
Abstract
Stainless steel components, such as heat exchangers for energy and air-conditioning technologies are commonly manufactured using nickel-based brazing fillers in continuous furnaces or vacuum furnaces. In the continuous furnace, the brazing process is often supported by a protective gas. As protective gas is commonly used nitrogen or mixtures of nitrogen and hydrogen. In the vacuum furnace, nitrogen is often used as cooling gas. The arising nitrogen enrichment of the braze metal and the base material influences the mechanical properties of the microstructural constituents of the brazed joints, especially the hardness. In this work, the influence of the nitrogen enrichment on the hardness of the microstructural constituents of the joints was investigated with regard to the process conditions. The amount of nitrogen in the braze metal as well as in the base material was determined using a carrier gas hot extraction technique. The hardness of the microstructural constituents of the brazed joints was determined using nanoindentation due to their small size (few microns). The results of samples, brazed with and without the influence of nitrogen, were compared.
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Engineering(all)
- General Engineering
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In: IOP Conference Series: Materials Science and Engineering, Vol. 480, No. 1, 012034, 05.03.2019.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Influence of nitrogen in brazing atmospheres on the hardness of the microstructural constituents of brazed stainless steel joints
AU - Fedorov, V.
AU - Uhlig, T.
AU - Wagner, G.
AU - Langohr, A.
AU - Holländer, U.
N1 - Funding Information: Part of the research was carried out within the scope of the project # 19056 BR funded by the Bundesministerium für Wirtschaft und Energie (BMWi) via the Arbeitsgemeinschaft industrieller Forschungsvereinigungen "Otto von Guericke" e.V. The authors thank the BMWi for financing this project.
PY - 2019/3/5
Y1 - 2019/3/5
N2 - Stainless steel components, such as heat exchangers for energy and air-conditioning technologies are commonly manufactured using nickel-based brazing fillers in continuous furnaces or vacuum furnaces. In the continuous furnace, the brazing process is often supported by a protective gas. As protective gas is commonly used nitrogen or mixtures of nitrogen and hydrogen. In the vacuum furnace, nitrogen is often used as cooling gas. The arising nitrogen enrichment of the braze metal and the base material influences the mechanical properties of the microstructural constituents of the brazed joints, especially the hardness. In this work, the influence of the nitrogen enrichment on the hardness of the microstructural constituents of the joints was investigated with regard to the process conditions. The amount of nitrogen in the braze metal as well as in the base material was determined using a carrier gas hot extraction technique. The hardness of the microstructural constituents of the brazed joints was determined using nanoindentation due to their small size (few microns). The results of samples, brazed with and without the influence of nitrogen, were compared.
AB - Stainless steel components, such as heat exchangers for energy and air-conditioning technologies are commonly manufactured using nickel-based brazing fillers in continuous furnaces or vacuum furnaces. In the continuous furnace, the brazing process is often supported by a protective gas. As protective gas is commonly used nitrogen or mixtures of nitrogen and hydrogen. In the vacuum furnace, nitrogen is often used as cooling gas. The arising nitrogen enrichment of the braze metal and the base material influences the mechanical properties of the microstructural constituents of the brazed joints, especially the hardness. In this work, the influence of the nitrogen enrichment on the hardness of the microstructural constituents of the joints was investigated with regard to the process conditions. The amount of nitrogen in the braze metal as well as in the base material was determined using a carrier gas hot extraction technique. The hardness of the microstructural constituents of the brazed joints was determined using nanoindentation due to their small size (few microns). The results of samples, brazed with and without the influence of nitrogen, were compared.
UR - http://www.scopus.com/inward/record.url?scp=85063777033&partnerID=8YFLogxK
U2 - 10.1088/1757-899X/480/1/012034
DO - 10.1088/1757-899X/480/1/012034
M3 - Conference article
AN - SCOPUS:85063777033
VL - 480
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
SN - 1757-8981
IS - 1
M1 - 012034
T2 - 21st Chemnitz Seminar on Materials Engineering
Y2 - 6 March 2019 through 7 March 2019
ER -