Development of the strongest welding consumables

Ronald Schnitzer, Phillip Haslberger, Daniel Schwarz, Wolfgang Ernst, Norbert Enzinger

Research output: Contribution to conference(Old data) Lecture or PresentationResearch

Abstract

The need of constructions with reduced weight and the requirement of carrying higher loads increase the demands on high strength steels. Developing high strength filler materials with acceptable toughness is an essential task for the realization of these ultra-high strength steel designs. The development of filler metals has reached now its limitation at a yield strength of 960 MPa. In order to increase the strength and reach an adequate toughness level the usage of micro-alloying elements is considered as an alternative concept compared to the conventional solid solution strengthening. These micro-alloying elements can influence grain growth behavior during solidification and cooling and increase therefore the toughness. Furthermore they can promote the formation of precipitates which result in a strengthening effect. For evaluation of the influence of different alloying elements, trial alloys of metal-cored wires were produced and tensile and notched impact samples of all-weld metal were machined. The results are presented and the most effective alloying concept for increasing the strength and maintaining the toughness is shown. Furthermore first results from comprehensive microstructural characterization are presented. Thereby atom probe tomography was applied in order to reveal the atomic-scale microstructure. These investigations should help to understand the structure-properties relationship of high strength welding consumables.
LanguageEnglish
StatusPublished - 2016
EventTHERMEC - Stadthalle Graz, Graz, Austria
Duration: 29 May 20163 Jun 2016
https://www.tugraz.at/events/thermec-2016/home/

Conference

ConferenceTHERMEC
CountryAustria
CityGraz
Period29/05/163/06/16
Internet address

Fields of Expertise

  • Advanced Materials Science

Cite this

Schnitzer, R., Haslberger, P., Schwarz, D., Ernst, W., & Enzinger, N. (2016). Development of the strongest welding consumables. THERMEC, Graz, Austria.

Development of the strongest welding consumables. / Schnitzer, Ronald ; Haslberger, Phillip; Schwarz, Daniel; Ernst, Wolfgang; Enzinger, Norbert.

2016. THERMEC, Graz, Austria.

Research output: Contribution to conference(Old data) Lecture or PresentationResearch

Schnitzer, R, Haslberger, P, Schwarz, D, Ernst, W & Enzinger, N 2016, 'Development of the strongest welding consumables' THERMEC, Graz, Austria, 29/05/16 - 3/06/16, .
Schnitzer R, Haslberger P, Schwarz D, Ernst W, Enzinger N. Development of the strongest welding consumables. 2016. THERMEC, Graz, Austria.
Schnitzer, Ronald ; Haslberger, Phillip ; Schwarz, Daniel ; Ernst, Wolfgang ; Enzinger, Norbert. / Development of the strongest welding consumables. THERMEC, Graz, Austria.
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AU - Schnitzer, Ronald

AU - Haslberger, Phillip

AU - Schwarz, Daniel

AU - Ernst, Wolfgang

AU - Enzinger, Norbert

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N2 - The need of constructions with reduced weight and the requirement of carrying higher loads increase the demands on high strength steels. Developing high strength filler materials with acceptable toughness is an essential task for the realization of these ultra-high strength steel designs. The development of filler metals has reached now its limitation at a yield strength of 960 MPa. In order to increase the strength and reach an adequate toughness level the usage of micro-alloying elements is considered as an alternative concept compared to the conventional solid solution strengthening. These micro-alloying elements can influence grain growth behavior during solidification and cooling and increase therefore the toughness. Furthermore they can promote the formation of precipitates which result in a strengthening effect. For evaluation of the influence of different alloying elements, trial alloys of metal-cored wires were produced and tensile and notched impact samples of all-weld metal were machined. The results are presented and the most effective alloying concept for increasing the strength and maintaining the toughness is shown. Furthermore first results from comprehensive microstructural characterization are presented. Thereby atom probe tomography was applied in order to reveal the atomic-scale microstructure. These investigations should help to understand the structure-properties relationship of high strength welding consumables.

AB - The need of constructions with reduced weight and the requirement of carrying higher loads increase the demands on high strength steels. Developing high strength filler materials with acceptable toughness is an essential task for the realization of these ultra-high strength steel designs. The development of filler metals has reached now its limitation at a yield strength of 960 MPa. In order to increase the strength and reach an adequate toughness level the usage of micro-alloying elements is considered as an alternative concept compared to the conventional solid solution strengthening. These micro-alloying elements can influence grain growth behavior during solidification and cooling and increase therefore the toughness. Furthermore they can promote the formation of precipitates which result in a strengthening effect. For evaluation of the influence of different alloying elements, trial alloys of metal-cored wires were produced and tensile and notched impact samples of all-weld metal were machined. The results are presented and the most effective alloying concept for increasing the strength and maintaining the toughness is shown. Furthermore first results from comprehensive microstructural characterization are presented. Thereby atom probe tomography was applied in order to reveal the atomic-scale microstructure. These investigations should help to understand the structure-properties relationship of high strength welding consumables.

M3 - (Old data) Lecture or Presentation

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