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Fatigue behaviour and fracture mechanism of cryogenically treated En 353 steel

Bensely, A. / Shyamala, L. / Harish, S. / Mohan Lal, D. / Nagarajan, G. / Junik, Krzysztof / Rajadurai, A.

AbstractAn experimental investigation was conducted for a better understanding of fatigue and fracture behaviour of carburized steel used in the manufacture of vehicle transmission elements such as crown wheel and pinion. An attempt was made to study the fatigue strength of En 353 based on failure at 10⁷ cycles after subjecting to three different treatments namely conventional heat treatment, shallow cryogenic treatment and deep cryogenic treatment. Rotating bending fatigue test was performed in air at room temperature for all specimens. Fractured specimen surfaces were examined by scanning electron microscope to identify the mechanism involved during fatigue. The study concludes that shallow and deep cryogenically treated samples show an improvement with an overall fatigue life of 71% and a reduction of 26% over conventionally heat treated samples respectively. The combined presence of retained austenite and fine carbides has resulted in enhanced fatigue strength of shallow cryogenically treated specimens over the conventionally heat treated and deep cryogenically treated specimens.

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Fatigue behaviour and fracture mechanism of cryogenically treated En 353 steel

Bensely, A. / Shyamala, L. / Harish, S. / Mohan Lal, D. / Nagarajan, G. / Junik, Krzysztof / Rajadurai, A.

AbstractAn experimental investigation was conducted for a better understanding of fatigue and fracture behaviour of carburized steel used in the manufacture of vehicle transmission elements such as crown wheel and pinion. An attempt was made to study the fatigue strength of En 353 based on failure at 10⁷ cycles after subjecting to three different treatments namely conventional heat treatment, shallow cryogenic treatment and deep cryogenic treatment. Rotating bending fatigue test was performed in air at room temperature for all specimens. Fractured specimen surfaces were examined by scanning electron microscope to identify the mechanism involved during fatigue. The study concludes that shallow and deep cryogenically treated samples show an improvement with an overall fatigue life of 71% and a reduction of 26% over conventionally heat treated samples respectively. The combined presence of retained austenite and fine carbides has resulted in enhanced fatigue strength of shallow cryogenically treated specimens over the conventionally heat treated and deep cryogenically treated specimens.

Fatigue behaviour and fracture mechanism of cryogenically treated En 353 steel

Bensely, A. / Shyamala, L. / Harish, S. / Mohan Lal, D. / Nagarajan, G. / Junik, Krzysztof / Rajadurai, A.

AbstractAn experimental investigation was conducted for a better understanding of fatigue and fracture behaviour of carburized steel used in the manufacture of vehicle transmission elements such as crown wheel and pinion. An attempt was made to study the fatigue strength of En 353 based on failure at 10⁷ cycles after subjecting to three different treatments namely conventional heat treatment, shallow cryogenic treatment and deep cryogenic treatment. Rotating bending fatigue test was performed in air at room temperature for all specimens. Fractured specimen surfaces were examined by scanning electron microscope to identify the mechanism involved during fatigue. The study concludes that shallow and deep cryogenically treated samples show an improvement with an overall fatigue life of 71% and a reduction of 26% over conventionally heat treated samples respectively. The combined presence of retained austenite and fine carbides has resulted in enhanced fatigue strength of shallow cryogenically treated specimens over the conventionally heat treated and deep cryogenically treated specimens.

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Title:

Fatigue behaviour and fracture mechanism of cryogenically treated En 353 steel

Contributors:

Bensely, A. (author) / Shyamala, L. (author) / Harish, S. (author) / Mohan Lal, D. (author) / Nagarajan, G. (author) / Junik, Krzysztof (author) / Rajadurai, A. (author)

Publication date:

2009-01-03

Size:

8 pages

ISSN:

DOI:

https://doi.org/10.1016/j.matdes.2009.01.003

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Carburized steel , Crown wheel and pinion , Cryogenic treatment , Fatigue test , Fracture mechanism

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