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Microstructural and processing factors affecting the formation of pro-eutectoid cementite in SAE 1092 steel wire
The demand for light gage wires with high strength and adequate ductility for applications such as long span bridges and automotive tires continues to present an interesting and challenging problem to steel producers. The typical approach to increase the strength in steels used in tire cord applications is by adding solute caribon. While this approach is an effective and relatively straight forward method to achieving high strength values, the gain in strength comes at the cost of a loss in the total ductility of the steel. Laboratory studies in SAE 1092 steels have shown that the decrease in ductility is strongly related to the formation of the brittle pro-eutectoid cementite constituent along the prior austenite grain boundaries. This paper will present and discuss the microstructural and processing factors, i.e. prior austenite grain boundaries and thermal path processing, affecting the formation of pro-eutectoid cementite. In addition, the results from this work have been implemented at the industrial level with great success resulting in a wire product with equal or better strength and over 30% increase in ductility when compared to the wire product exhibiting pro-eutectoid cementite along the prior austenite grain boundaries.
Microstructural and processing factors affecting the formation of pro-eutectoid cementite in SAE 1092 steel wire
The demand for light gage wires with high strength and adequate ductility for applications such as long span bridges and automotive tires continues to present an interesting and challenging problem to steel producers. The typical approach to increase the strength in steels used in tire cord applications is by adding solute caribon. While this approach is an effective and relatively straight forward method to achieving high strength values, the gain in strength comes at the cost of a loss in the total ductility of the steel. Laboratory studies in SAE 1092 steels have shown that the decrease in ductility is strongly related to the formation of the brittle pro-eutectoid cementite constituent along the prior austenite grain boundaries. This paper will present and discuss the microstructural and processing factors, i.e. prior austenite grain boundaries and thermal path processing, affecting the formation of pro-eutectoid cementite. In addition, the results from this work have been implemented at the industrial level with great success resulting in a wire product with equal or better strength and over 30% increase in ductility when compared to the wire product exhibiting pro-eutectoid cementite along the prior austenite grain boundaries.
Microstructural and processing factors affecting the formation of pro-eutectoid cementite in SAE 1092 steel wire
Borchardt, Fabio Da Silva (Autor:in) / Garcia, C.Isaac (Autor:in) / Hua, M. (Autor:in) / DeArdo, Anthony J. (Autor:in)
MS&T, Materials Science and Technology, 2008 ; 1302-1311
2008
10 Seiten, 8 Quellen
Aufsatz (Konferenz)
Englisch
Anwendung im Fahrzeugbau , Ausscheidungsprodukt , Austenit , Automobilindustrie , Brückenbau , Duktilität , Eutektoid , Festigkeitserhöhung , Hängebrücke , hochfester niedriglegierter Stahl , Korngrenze , Korngröße , Laboruntersuchung , mechanische Festigkeit , Mikrostruktur , nichtrostender Stahl , Stahldraht , Verfahrensparameter , Verschleißfestigkeit , Zementit
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